{"id":24233,"date":"2025-10-17T11:16:24","date_gmt":"2025-10-17T11:16:24","guid":{"rendered":"https:\/\/1-grid.com\/knowledge\/how-to-check-if-my-ip-is-blacklisted-2\/"},"modified":"2025-10-17T11:16:27","modified_gmt":"2025-10-17T11:16:27","slug":"how-to-check-if-my-ip-is-blacklisted-2","status":"publish","type":"ht_kb","link":"https:\/\/1grid.co.za\/knowledge\/how-to-check-if-my-ip-is-blacklisted\/","title":{"rendered":"How To Check If My IP Is Blacklisted and Get It Delisted"},"content":{"rendered":"\n<p>If your emails aren\u2019t delivering or your website feels unreachable, it could be because your<strong> <a href=\"https:\/\/1grid.co.za\/knowledge\/everything-you-need-to-know-about-an-ip-address\/\">IP address<\/a><\/strong> has landed on a <a href=\"https:\/\/1grid.co.za\/knowledge\/what-is-ip-blacklisting\/\"><strong>blacklist<\/strong><\/a>, but don\u2019t panic. It\u2019s a common, fixable issue, and it&#8217;s easy to check if you&#8217;re IP has been blacklisted.\u00a0<br><br>This guide walks you through how to check if your IP is blacklisted, why it happens, and how to restore your access quickly by requesting a delisting from the blacklist provider so you can get back online with us.\u00a0<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"600\" src=\"https:\/\/1grid.co.za\/knowledge\/wp-content\/uploads\/2022\/02\/1-grid-Images-for-KB-Articles-1000-x-600-px-57.png\" alt=\"\" class=\"wp-image-33839\"\/><\/figure>\n<\/div>\n\n\n<div class=\"wp-block-ht-block-toc is-style-rounded htoc htoc--position-wide toc-list-style-plain\" data-htoc-state=\"expanded\"><span class=\"htoc__title\"><span class=\"ht_toc_title\">Table of Contents<\/span><span class=\"htoc__toggle\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\"><g fill=\"#444\"><path d=\"M15 7H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><path d=\"M15 1H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1zM15 13H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><\/g><\/svg><\/span><\/span><div class=\"htoc__itemswrap\"><ul class=\"ht_toc_list\"><li class=\"\"><a href=\"#htoc-how-blacklist-databases-work\">How Blacklist Databases Work&nbsp;<\/a><ul class=\"ht_toc_child_list\"><li class=\"\"><a href=\"#htoc-\">Technical Listings<\/a><\/li><li class=\"\"><a href=\"#htoc-1\">Policy Listings<\/a><\/li><li class=\"\"><a href=\"#htoc-11\">Evidence-Based Listings<\/a><\/li><\/ul><\/li><li class=\"\"><a href=\"#htoc-why-is-my-ip-blacklisted\">Why Is My IP Blacklisted?&nbsp;<\/a><ul class=\"ht_toc_child_list\"><li class=\"\"><a href=\"#htoc-1-spam-or-suspicious-email-activity\">1. Spam or Suspicious Email Activity&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-2-malware-or-compromised-accounts\">2. Malware or Compromised Accounts&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-3-too-many-failed-login-attempts\">3. Too Many Failed Login Attempts&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-4-suspicious-or-unusual-network-activity\">4. Suspicious or Unusual Network Activity&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-5-shared-network-or-public-connection-issues\">5. Shared Network or Public Connection Issues&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-6-false-positives-accidental-blocks\">6. False Positives (Accidental Blocks)&nbsp;<\/a><\/li><\/ul><\/li><li class=\"\"><a href=\"#htoc-who-can-blacklist-my-ip\">Who Can Blacklist My IP?&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-how-do-i-check-if-my-ip-is-blacklisted\">How Do I Check If My IP is Blacklisted?&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-how-to-get-delisted\">Delisting Made Easy\u00a0<\/a><ul class=\"ht_toc_child_list\"><li class=\"\"><a href=\"#htoc-1-investigate-and-correct-the-issue\">1: Investigate and Correct the Issue&nbsp;<\/a><\/li><\/ul><\/li><li class=\"\"><a href=\"#htoc-following-the-blacklist-removal-process\">Following the Blacklist Removal Process&nbsp;<\/a><ul class=\"ht_toc_child_list\"><li class=\"\"><a href=\"#htoc-1-self-service-removal\">1. Self-Service Removal&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-2-time-based-removal\">2. Time-Based Removal&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-3-manual-review-or-appeal\">3. Manual Review or Appeal&nbsp;<\/a><\/li><\/ul><\/li><li class=\"\"><a href=\"#htoc-why-timely-action-matters\">Why Timely Action Matters&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-tips-to-reduce-flags\">Tips to Reduce Flags&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-when-to-contact-1-grid-support\">When to Contact 1-grid Support&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-faqs\">FAQs&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-additional-resources\">Additional Resources&nbsp;<\/a><\/li><\/ul><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-how-blacklist-databases-work\"><strong>How Blacklist Databases Work<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Every <a href=\"https:\/\/www.google.com\/search?q=DNS-based+Blacklists&amp;rlz=1C1GCEU_enZA1059ZA1063&amp;oq=DNS-based+Blacklists&amp;gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCDkyMmowajE1qAIIsAIB8QULYb83JOKbGPEFC2G_NyTimxg&amp;sourceid=chrome&amp;ie=UTF-8\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>blacklist provider<\/strong><\/a> maintains its own criteria for identifying and flagging potentially harmful <a href=\"https:\/\/1grid.co.za\/knowledge\/everything-you-need-to-know-about-an-ip-address\/\"><strong>IP addresses<\/strong><\/a>. These lists are designed to protect users from spam, malware, and other online threats, but sometimes, legitimate senders can get caught up in them too.\u00a0<\/p>\n\n\n\n<p>Each <a href=\"https:\/\/www.google.com\/search?q=DNS-based+Blacklists&amp;rlz=1C1GCEU_enZA1059ZA1063&amp;oq=DNS-based+Blacklists&amp;gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCDkyMmowajE1qAIIsAIB8QULYb83JOKbGPEFC2G_NyTimxg&amp;sourceid=chrome&amp;ie=UTF-8\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>blacklist database<\/strong><\/a> uses a mix of technical, policy, and evidence-based criteria when deciding whether to list an IP address:\u00a0<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-\"><strong>Technical Listings<\/strong><\/h6>\n\n\n\n<p id=\"htoc-technical-listings-these-occur-when-a-mail-server-s-setup-raises-red-flags-such-as-missing-or-incorrect-dns-or-reverse-dns-records-invalid-mail-server-greetings-or-servers-operating-within-an-ip-range-associated-with-spam\">These occur when a mail server\u2019s setup raises red flags such as missing or incorrect <a href=\"https:\/\/1grid.co.za\/knowledge\/what-is-a-domain-name-server-dns\/\"><strong>DNS<\/strong><\/a> or reverse DNS records, invalid mail server settings, or servers operating within an IP range <a href=\"https:\/\/1grid.co.za\/knowledge\/email-security-avoid-being-labeled-as-a-spammer\/\"><strong>associated with spam<\/strong><\/a>.\u00a0<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-1\"><strong>Policy Listings<\/strong><\/h6>\n\n\n\n<p id=\"htoc-policy-listings-these-happen-when-a-blacklist-operator-chooses-to-block-specific-regions-isps-or-networks-known-for-poor-email-practices-like-ignoring-unsubscribe-requests\">These happen when a blacklist operator chooses to block specific regions, ISPs, or networks known for poor email practices, like ignoring \u201cunsubscribe\u201d requests.\u00a0<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-11\"><strong>Evidence-Based Listings<\/strong><\/h6>\n\n\n\n<p id=\"htoc-evidence-based-listings-these-are-based-on-direct-reports-or-activity-logs-that-show-an-ip-address-sending-unsolicited-or-suspicious-emails\">These are based on direct reports or activity logs that show an IP address sending unsolicited or suspicious emails.\u00a0<\/p>\n\n\n\n<p><strong>TIP: <\/strong>If your <a href=\"https:\/\/1grid.co.za\/knowledge\/what-is-ip-blacklisting\/\"><strong>IP address appears on a blacklist<\/strong><\/a>, you can visit the blacklist provider\u2019s website to run a lookup on your IP. Most services, such as <a href=\"https:\/\/www.spamhaus.org\/blocklists\/domain-blocklist\/\"><strong>Spamhaus<\/strong><\/a>, <a href=\"https:\/\/campus.barracuda.com\/product\/emailsecuritygateway\/doc\/93197312\/allow-list-and-block-list\/\"><strong>Barracuda<\/strong><\/a>, or <a href=\"https:\/\/www.google.com\/search?sca_esv=d39e7dff067d00e3&amp;rlz=1C1GCEU_enZA1059ZA1063&amp;cs=0&amp;sxsrf=AE3TifNfKoKLvuTR3gQnKfwL575EGXtRFA%3A1760518263641&amp;q=SORBS&amp;sa=X&amp;ved=2ahUKEwjl27TN6aWQAxUpZkEAHaXSMl0QxccNegQIJxAD&amp;mstk=AUtExfBi-29Fk5Qx9LeiRYP9Ytb87jabQvyAdDOiD0w8m0IF_YEtEDOkl2_vVgmny47o_zrv0rDRL09QOntSlUEqZRX-yD_mLMLgBlv7mO0_9bZFrdJ0pDtosEUydlNhPfirzwYlV2KDVL84rd-3_v6RBC3EuOtX1iDWYKRkydP9EjkWaYyQQrg-GYSDNYzAgOPfpkNE8czLDPW_5z9DYYUxWvJdNrJWNDoM-UJxnK8uMlL2YEWLFT70G7a8AzmyQ-Ys5x12cSPrHKJI7igv5z76mEnz&amp;csui=3\"><strong>SORBS<\/strong><\/a>, will display general reasons for the listing, helping you identify and fix the root cause.\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-why-is-my-ip-blacklisted\"><strong>Why Is My IP Blacklisted?<\/strong>&nbsp;<\/h2>\n\n\n\n<p>IP blacklisting happens when an address is associated with suspicious activity or spam-like behaviour.&nbsp;<\/p>\n\n\n\n<p>Below we\u2019ve listed some of the most common reasons your IP may be blacklisted, and what you can do about them.\u00a0<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-1-spam-or-suspicious-email-activity\"><strong>1. Spam or Suspicious Email Activity<\/strong>&nbsp;<\/h6>\n\n\n\n<p>One of the main reasons an IP address becomes blacklisted is because it\u2019s flagged for sending large volumes of emails that appear suspicious or spam-like. This doesn\u2019t always mean you sent spam intentionally. Sometimes, a <strong>compromised mailbox<\/strong> or outdated settings can cause the issue.\u00a0<\/p>\n\n\n\n<p><strong><em>Common causes include:<\/em><\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-high-volume-sending-sending-too-many-emails-in-a-short-time-can-trigger-spam-filters\"><strong>High-volume Sending:<\/strong> Sending too many emails in a short time can trigger spam filters.\u00a0<\/li>\n\n\n\n<li id=\"htoc-email-content-issues-using-spam-trigger-words-suspicious-links-or-misleading-subject-lines-can-cause-your-ip-to-be-flagged\"><strong>Email Content Issues:<\/strong> Using <a href=\"https:\/\/1grid.co.za\/knowledge\/email-security-avoid-being-labeled-as-a-spammer\/\"><strong>spam trigger words<\/strong><\/a>, suspicious links, or misleading subject lines can cause your IP to be flagged.\u00a0<\/li>\n\n\n\n<li id=\"htoc-missing-authentication-without-proper-spf-dkim-and-dmarc-records-your-emails-may-look-unverified-making-them-more-likely-to-be-blocked-or-spoofed\"><strong>Missing Authentication:<\/strong> Without proper <strong>\u00a0<a href=\"https:\/\/1grid.co.za\/knowledge\/how-to-enable-dkim-and-spf-on-your-mail-domain\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>SPF<\/strong><\/a><strong>,\u00a0<\/strong><a href=\"https:\/\/1grid.co.za\/knowledge\/how-to-enable-dkim-and-spf-on-your-mail-domain\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>DKIM<\/strong><\/a><strong>, and\u00a0<\/strong><a href=\"https:\/\/1grid.co.za\/knowledge\/cpanel-how-to-add-dmarc-record\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>DMARC<\/strong><\/a><strong>\u00a0<\/strong><a href=\"https:\/\/1grid.co.za\/knowledge\/understanding-dns-records-and-how-to-check-these\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>records<\/strong><\/a><\/strong>, your emails may look unverified, making them more likely to be blocked or spoofed.\u00a0<\/li>\n<\/ul>\n\n\n\n<p><strong>IMPORTANT: <\/strong>Make sure your email domain is properly authenticated.&nbsp;<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-2-malware-or-compromised-accounts\"><strong>2. Malware or Compromised Accounts<\/strong>&nbsp;<\/h6>\n\n\n\n<p><strong><em>Common triggers:<\/em><\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-sending-or-forwarding-viruses-or-malicious-attachments\">Sending or forwarding viruses or malicious attachments.\u00a0<\/li>\n\n\n\n<li id=\"htoc-hosting-or-linking-to-phishing-content\">Hosting or linking to phishing content.\u00a0<\/li>\n\n\n\n<li id=\"htoc-using-outdated-or-vulnerable-plugins-or-cms-software\">Using outdated or vulnerable plugins or CMS software.\u00a0<\/li>\n<\/ul>\n\n\n\n<p><strong>TIP: <\/strong>Run a <strong>full antivirus scan<\/strong> on your device and website. Keep your operating system and plugins up to date and use strong passwords to prevent automated logins by bots.&nbsp;<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-3-too-many-failed-login-attempts\"><strong>3. Too Many Failed Login Attempts<\/strong>&nbsp;<\/h6>\n\n\n\n<p><strong><em>This can happen when:<\/em><\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-you-ve-entered-the-wrong-password-multiple-times\">You\u2019ve entered the wrong password multiple times.\u00a0<\/li>\n\n\n\n<li id=\"htoc-a-hacker-is-attempting-to-gain-access-through-brute-force-attacks\">A hacker is attempting to gain access through brute-force attacks.\u00a0<\/li>\n\n\n\n<li id=\"htoc-you-re-logging-in-from-multiple-devices-or-unknown-locations\">You\u2019re logging in from multiple devices or unknown locations.\u00a0<\/li>\n<\/ul>\n\n\n\n<p><strong>TIP: Wait about two hours<\/strong> before trying again, and in the meantime, <strong>reset your password<\/strong>.\u00a0\u00a0<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-4-suspicious-or-unusual-network-activity\"><strong>4. Suspicious or Unusual Network Activity<\/strong>&nbsp;<\/h6>\n\n\n\n<p><strong><em>Possible causes:<\/em><\/strong>\u00a0<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-multiple-simultaneous-logins\">Multiple simultaneous logins.\u00a0<\/li>\n\n\n\n<li id=\"htoc-high-api-or-ftp-activity\">High API or FTP activity.\u00a0<\/li>\n\n\n\n<li id=\"htoc-automated-scripts-or-bots-running-in-the-background\">Automated scripts or bots running in the background.\u00a0<\/li>\n<\/ul>\n\n\n\n<p><strong>TIP:<\/strong> Always log out when you\u2019re done managing your account and avoid running multiple FTP connections or backup processes at once.&nbsp;<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-5-shared-network-or-public-connection-issues\"><strong>5. Shared Network or Public Connection Issues<\/strong>&nbsp;<\/h6>\n\n\n\n<p>On occasion, your IP may be blacklisted because of another user on the same network. This can happen when you\u2019re using <strong>public Wi-Fi or shared business internet<\/strong>.&nbsp;<\/p>\n\n\n\n<p><strong>TIP: <\/strong>Avoid logging in from public hotspots or unsecured connections.&nbsp;<br>If you\u2019re working remotely, use a <strong>trusted VPN<\/strong> or your <strong>home network<\/strong> to reduce the risk of shared IP flags.&nbsp;<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-6-false-positives-accidental-blocks\"><strong>6. False Positives (Accidental Blocks)<\/strong>&nbsp;<\/h6>\n\n\n\n<p>There are times when your IP may be blocked by mistake. This can happen especially if the traffic pattern resembles an attack. This is rare, but when it happens, it can be fixed quickly.&nbsp;<\/p>\n\n\n\n<p><strong>TIP: <\/strong>Try again in two hours. If you\u2019re still blocked, consider whitelisting options with your IP address at hand.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-who-can-blacklist-my-ip\"><strong>Who Can Blacklist My IP?<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Blacklists (or <a href=\"https:\/\/www.google.com\/search?q=DNS-based+Blacklists&amp;rlz=1C1GCEU_enZA1059ZA1063&amp;oq=DNS-based+Blacklists&amp;gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCDkyMmowajE1qAIIsAIB8QULYb83JOKbGPEFC2G_NyTimxg&amp;sourceid=chrome&amp;ie=UTF-8\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>DNS-based Blacklists<\/strong><\/a>, also known as DNSBLs) are maintained by reputable global organisations that track potentially harmful IP activity.\u00a0<\/p>\n\n\n\n<p>Common ones include:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-spamhaus-is-known-for-the-sbl-spamhaus-block-list\"><a href=\"https:\/\/www.spamhaus.org\/blocklists\/domain-blocklist\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Spamhaus<\/strong><\/a><strong> <\/strong>is known for the <a href=\"https:\/\/www.spamhaus.org\/blocklists\/spamhaus-blocklist\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>SBL (Spamhaus Block List)<\/strong><\/a>.\u00a0<\/li>\n\n\n\n<li id=\"htoc-spamcop-flags-networks-linked-to-spam-activity\"><a href=\"https:\/\/www.spamcop.net\/bl.shtml\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>SpamCop<\/strong><\/a><strong> <\/strong>flags networks linked to spam activity.\u00a0<\/li>\n\n\n\n<li id=\"htoc-barracuda-bbrl-used-widely-by-mail-filters\"><a href=\"https:\/\/www.google.com\/search?sca_esv=d39e7dff067d00e3&amp;rlz=1C1GCEU_enZA1059ZA1063&amp;cs=0&amp;sxsrf=AE3TifNfKoKLvuTR3gQnKfwL575EGXtRFA%3A1760518263641&amp;q=Barracuda+Reputation+Block+List+%28BRBL%29&amp;sa=X&amp;ved=2ahUKEwjl27TN6aWQAxUpZkEAHaXSMl0QxccNegQIKRAB&amp;mstk=AUtExfBi-29Fk5Qx9LeiRYP9Ytb87jabQvyAdDOiD0w8m0IF_YEtEDOkl2_vVgmny47o_zrv0rDRL09QOntSlUEqZRX-yD_mLMLgBlv7mO0_9bZFrdJ0pDtosEUydlNhPfirzwYlV2KDVL84rd-3_v6RBC3EuOtX1iDWYKRkydP9EjkWaYyQQrg-GYSDNYzAgOPfpkNE8czLDPW_5z9DYYUxWvJdNrJWNDoM-UJxnK8uMlL2YEWLFT70G7a8AzmyQ-Ys5x12cSPrHKJI7igv5z76mEnz&amp;csui=3\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Barracuda BBRL<\/strong><\/a> is<strong> <\/strong>used widely by mail filters\u00a0<\/li>\n\n\n\n<li id=\"htoc-sorbs-lists-ips-showing-spam-or-virus-like-behaviour\"><a href=\"https:\/\/www.google.com\/search?sca_esv=d39e7dff067d00e3&amp;rlz=1C1GCEU_enZA1059ZA1063&amp;cs=0&amp;sxsrf=AE3TifNfKoKLvuTR3gQnKfwL575EGXtRFA%3A1760518263641&amp;q=SURBL&amp;sa=X&amp;ved=2ahUKEwjl27TN6aWQAxUpZkEAHaXSMl0QxccNegQIEhAB&amp;mstk=AUtExfBi-29Fk5Qx9LeiRYP9Ytb87jabQvyAdDOiD0w8m0IF_YEtEDOkl2_vVgmny47o_zrv0rDRL09QOntSlUEqZRX-yD_mLMLgBlv7mO0_9bZFrdJ0pDtosEUydlNhPfirzwYlV2KDVL84rd-3_v6RBC3EuOtX1iDWYKRkydP9EjkWaYyQQrg-GYSDNYzAgOPfpkNE8czLDPW_5z9DYYUxWvJdNrJWNDoM-UJxnK8uMlL2YEWLFT70G7a8AzmyQ-Ys5x12cSPrHKJI7igv5z76mEnz&amp;csui=3\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>SORBS<\/strong><\/a><strong> <\/strong>lists IPs showing spam or virus-like behaviour.\u00a0<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-how-do-i-check-if-my-ip-is-blacklisted\"><strong>How Do I Check If My IP is Blacklisted?<\/strong>&nbsp;<\/h2>\n\n\n\n<p>To check whether your IP address has been blacklisted, along with the reason and source of the blacklist, you can use these tools.\u00a0<\/p>\n\n\n\n<p><strong>1: <\/strong>Find your<strong> <a href=\"https:\/\/1grid.co.za\/knowledge\/whats-my-public-ip-address\/\">Public IP Address<\/a><\/strong>.\u00a0<\/p>\n\n\n\n<p><strong>2:<\/strong> Visit a trusted Blacklist Checker Lookup tool such as:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-dnschecker-ip-blacklist-check\"><strong><a href=\"https:\/\/dnschecker.org\/ip-blacklist-checker.php\" target=\"_blank\" rel=\"noreferrer noopener\">DNSChecker IP Blacklist Check<\/a>\u00a0<\/strong><\/li>\n\n\n\n<li id=\"htoc-mxtoolbox-blacklist-check\"><strong><a href=\"https:\/\/mxtoolbox.com\/blacklists.aspx\" target=\"_blank\" rel=\"noreferrer noopener\">MXToolbox Blacklist Check<\/a>\u00a0<\/strong><\/li>\n\n\n\n<li id=\"htoc-whatismyipaddress-blacklist-check\"><strong><a href=\"https:\/\/whatismyipaddress.com\/blacklist-check\" target=\"_blank\" rel=\"noreferrer noopener\">WhatIsMyIPAddress Blacklist Check<\/a>\u00a0<\/strong><\/li>\n\n\n\n<li id=\"htoc-spamhaus-lookup-tool\"><strong><a href=\"https:\/\/check.spamhaus.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">Spamhaus Lookup Tool<\/a>\u00a0<\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong>3:<\/strong> Enter your <strong><a href=\"https:\/\/1grid.co.za\/knowledge\/everything-you-need-to-know-about-an-ip-address\/\">IP address<\/a><\/strong>.\u00a0<\/p>\n\n\n\n<p><strong>4:<\/strong> Review results and note the reason for blacklisting (if listed).\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-how-to-get-delisted\"><strong>Delisting<\/strong> <strong>Made Easy<\/strong>\u00a0<\/h2>\n\n\n\n<p>Blacklisting is often reversible, and the key is to fix the cause first, then follow the proper removal process.\u00a0<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-1-investigate-and-correct-the-issue\"><strong><em>1: Investigate and Correct the Issue<\/em><\/strong>&nbsp;<\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-scan-all-devices-and-servers-on-your-network-for-malware-or-spam-scripts\">Scan all devices and servers on your network for malware or spam scripts equally.\u00a0<\/li>\n\n\n\n<li id=\"htoc-review-your-mail-server-configuration-to-ensure-dns-reverse-dns-and-smtp-banners-are-correctly-set-up\">Then, review your mail server configuration to ensure <a href=\"https:\/\/1grid.co.za\/knowledge\/what-is-a-domain-name-server-dns\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>DNS<\/strong><\/a>, <strong>reverse DNS<\/strong>, and <strong>SMTP banners<\/strong> are correctly set up.\u00a0<\/li>\n\n\n\n<li id=\"htoc-check-for-any-available-operating-system-or-software-patches-to-strengthen-security\">Check for any available operating system or software patches to strengthen security accordingly.\u00a0<\/li>\n\n\n\n<li id=\"htoc-update-router-and-firewall-settings-for-better-protection\">Update router and firewall settings for better protection concurrently.\u00a0<\/li>\n\n\n\n<li id=\"htoc-reset-and-enforce-stronger-passwords-across-all-accounts\">Reset and enforce stronger passwords across all accounts before requesting this.\u00a0<\/li>\n<\/ul>\n\n\n\n<p><strong>TIP: <\/strong>Before submitting a removal request, ensure your environment is clean.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-following-the-blacklist-removal-process\"><strong>Following the Blacklist Removal Process<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Most blacklist providers include a removal process you can follow directly from their websites because the exact method varies by provider, but typically falls into one of three categories:\u00a0<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-1-self-service-removal\"><strong><em>1. Self-Service Removal<\/em><\/strong>&nbsp;<\/h6>\n\n\n\n<p>Some blacklists allow you to request removal instantly through a self-service form. This is a fast option \u2014 but only if you\u2019ve already fixed the underlying issue. Otherwise, repeat listings can delay or block future removals.&nbsp;<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-2-time-based-removal\"><strong><em>2. Time-Based Removal<\/em><\/strong>&nbsp;<\/h6>\n\n\n\n<p>Many blacklists automatically remove minor offenders after a set period, and this can range from a few hours to <strong>7 to 14 days<\/strong>. However, when an IP address is being flagged multiple times or linked to bulk spam activity, the removal period often extends significantly.\u00a0<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"htoc-3-manual-review-or-appeal\"><strong><em>3. Manual Review or Appeal<\/em><\/strong>&nbsp;<\/h6>\n\n\n\n<p>For higher-level listings, you may need to submit a formal request to the blacklist operator. This process usually requires you to provide proof of what has been fixed. E.g. updated authentication records such as SPF, DKIM, or DMARC, or confirmation that malware has been successfully removed.<\/p>\n\n\n\n<p>For example:&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-spamhaus-provides-a-removal-request-form-after-you-correct-the-issue\">Spamhaus provides a <strong>removal request form<\/strong> after you correct the issue.\u00a0<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-why-timely-action-matters\"><strong>Why Timely Action Matters<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Blacklists often <strong>share data across networks<\/strong>, meaning your listing could appear in multiple databases. Taking quick corrective action helps restore your email reputation and prevents your domain or hosting IP from being blocked by other providers.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-tips-to-reduce-flags\"><strong>Tips to Reduce Flags<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Keep your IP (and sender reputation) strong by:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-maintaining-a-clean-verified-mailing-list\">Maintaining a clean, verified mailing list.\u00a0<\/li>\n\n\n\n<li id=\"htoc-avoiding-bulk-or-repetitive-sends-in-short-bursts\">Avoiding bulk or repetitive sends in short bursts.\u00a0<\/li>\n\n\n\n<li id=\"htoc-monitoring-bounce-and-complaint-rates\">Monitoring bounce and complaint rates.\u00a0<\/li>\n\n\n\n<li id=\"htoc-keeping-all-devices-free-of-malware\">Keeping all devices free of malware.\u00a0<\/li>\n\n\n\n<li id=\"htoc-ensuring-spf-dkim-and-dmarc-are-configured-correctly\">Ensuring SPF, DKIM, and DMARC are configured correctly.\u00a0<\/li>\n\n\n\n<li id=\"htoc-avoiding-open-relays-and-using-strong-passwords\">Avoid open relays and use strong passwords.\u00a0<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-when-to-contact-1-grid-support\"><strong>When to Contact 1-grid Support<\/strong>&nbsp;<\/h2>\n\n\n\n<p>Reach out to our Support Team if:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-you-re-on-a-shared-hosting-plan-and-your-ip-is-blacklisted\">You\u2019re on a <strong>shared hosting plan<\/strong>, and your IP is blacklisted.\u00a0<\/li>\n\n\n\n<li id=\"htoc-you-ve-followed-all-delisting-steps-but-the-issue-persists\">You\u2019ve followed all delisting steps, but the issue persists.\u00a0<\/li>\n\n\n\n<li id=\"htoc-you-suspect-your-mail-ip-mailchannels-is-being-blocked\">You suspect your mail IP (MailChannels) is being blocked, and you need intervention.\u00a0<\/li>\n<\/ul>\n\n\n\n<p>Provide:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-your-ip-address\">Your<a href=\"https:\/\/1grid.co.za\/knowledge\/whats-my-public-ip-address\/\"> <\/a><strong><a href=\"https:\/\/1grid.co.za\/knowledge\/whats-my-public-ip-address\/\">IP address<\/a>\u00a0<\/strong><\/li>\n\n\n\n<li id=\"htoc-the-blacklist-report-or-delisting-ticket-reference\">The <strong><a href=\"https:\/\/1grid.co.za\/knowledge\/what-is-ip-blacklisting\/\">blacklist<\/a> <\/strong>report or delisting ticket reference\u00a0<\/li>\n<\/ul>\n\n\n\n<p>Our team will review and escalate to our <strong>Network or Mail Administrators<\/strong> if needed.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-faqs\"><strong>FAQs<\/strong>&nbsp;<\/h2>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>How do I know if my IP is blacklisted?<\/strong>\u00a0<\/summary>\n<p id=\"htoc-111\">Use tools like <strong><a href=\"https:\/\/mxtoolbox.com\/blacklists.aspx\" target=\"_blank\" rel=\"noreferrer noopener\">MXToolbox<\/a> <\/strong>or <a href=\"https:\/\/check.spamhaus.org\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Spamhaus Lookup<\/strong><\/a> to check.\u00a0<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>How long does delisting take?<\/strong>\u00a0<\/summary>\n<p id=\"htoc-1111\">Usually within <strong>24 to 72 hours<\/strong> after fixing the cause and submitting a request.\u00a0<\/p>\n<\/details>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-additional-resources\"><strong>Additional Resources<\/strong>&nbsp;<\/h2>\n\n\n\n<p><a href=\"https:\/\/1grid.co.za\/knowledge\/what-is-ip-blacklisting\/\"><strong>Everything You Need to Know About IP Blacklisting<\/strong><\/a><br><strong><a href=\"https:\/\/1grid.co.za\/knowledge\/everything-you-need-to-know-about-an-ip-address\/\" target=\"_blank\" rel=\"noreferrer noopener\">Everything You Need to Know About an IP Address<\/a>\u00a0<br><a href=\"https:\/\/1grid.co.za\/knowledge\/whats-my-public-ip-address\/\" target=\"_blank\" rel=\"noreferrer noopener\">What Is My Public IP Address and How Do I Find It?<\/a>\u00a0\u00a0<\/strong><br><a href=\"https:\/\/1grid.co.za\/knowledge\/?s=email&amp;ht-kb-search=1&amp;lang=\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Email FAQs<\/strong><\/a>\u00a0<br><a href=\"https:\/\/1grid.co.za\/knowledge\/?s=domains&amp;ht-kb-search=1&amp;lang=\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Domains FAQs<\/strong><\/a>\u00a0<br><a href=\"https:\/\/1grid.co.za\/knowledge\/tips-for-choosing-a-great-domain-name\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Choosing a Great Domain Name and Why It Matters for Your Brand Online<\/strong><\/a><strong>\u00a0<\/strong>\u00a0<br><a href=\"https:\/\/1grid.co.za\/knowledge\/everything-you-need-to-know-about-domains-at-1-grid\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Everything You Need to Know About Domains at 1-grid<\/strong><\/a>\u00a0<br><a href=\"https:\/\/1grid.co.za\/knowledge\/getting-started-with-website-builder-at-1-grid\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Get Started with Website Builder at 1-grid<\/strong><\/a><strong>\u00a0\u00a0 <\/strong>\u00a0<br><a href=\"https:\/\/1grid.co.za\/knowledge\/what-is-professional-email-from-1grid\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>What is Professional Email from 1-grid?<\/strong><\/a><strong>\u00a0<\/strong>\u00a0<br><a href=\"https:\/\/1grid.co.za\/knowledge\/why-ssl-the-purpose-of-using-ssl-certificates\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Why SSL? The Purpose of Using SSL Certificates\u00a0<\/strong><\/a><strong> <\/strong>\u00a0<br><a href=\"https:\/\/1grid.co.za\/knowledge\/?s=DNS&amp;ht-kb-search=1&amp;lang=\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Everything You Need to Know About DNS for Your Domain<\/strong><\/a>\u00a0<br><a href=\"https:\/\/1grid.co.za\/knowledge\/how-to-update-your-domains-nameservers-at-1-grid\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>How to Update Your Domain\u2019s Nameservers at 1-grid<\/strong><\/a><strong>\u00a0\u00a0<\/strong>\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-need-additional-support\"><strong>Need Additional Support?<\/strong>&nbsp;<\/h2>\n\n\n\n<p><strong>We&#8217;re Here to <\/strong><a href=\"https:\/\/1grid.co.za\/knowledge\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Help<\/strong><\/a><strong>:<\/strong>&nbsp;<\/p>\n\n\n\n<p>Learning how to check if your IP is blacklisted and how to get it fixed doesn\u2019t have to feel challenging with this easy-to-reference guide. Stuck? Contact our Support Team for clarity and guidance (<a href=\"https:\/\/1grid.co.za\/contact-us\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>https:\/\/1grid.co.za\/contact-us\/<\/strong><\/a>). We&#8217;re ready to see how we can help!\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If your emails aren\u2019t delivering or your website feels unreachable, it could be because your IP address has landed on a blacklist, but don\u2019t panic. It\u2019s a common, fixable issue, and it&#8217;s easy to check if you&#8217;re IP has been blacklisted.\u00a0 This guide walks you through how to check if&#8230;<\/p>\n","protected":false},"author":21,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"ht-kb-category":[1174],"ht-kb-tag":[138,187,470,480,542],"class_list":["post-24233","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-hosting","ht_kb_tag-blacklist","ht_kb_tag-check","ht_kb_tag-hosting","ht_kb_tag-how-to","ht_kb_tag-ip-address"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How To Check If My IP Is Blacklisted and Get It Delisted - 1-grid Knowledge Base<\/title>\n<meta name=\"description\" content=\"Learn how to check if your IP is blacklisted, causes, and how to fix with steps for delisting, prevention, and support at 1-grid.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/1grid.co.za\/knowledge\/how-to-check-if-my-ip-is-blacklisted\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How To Check If My IP Is Blacklisted and Get It Delisted - 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