{"id":726,"date":"2024-05-07T11:42:15","date_gmt":"2024-05-07T11:42:15","guid":{"rendered":"https:\/\/kb.shortpixel.com\/docs\/ips-to-be-whitelisted\/"},"modified":"2026-03-23T13:30:23","modified_gmt":"2026-03-23T13:30:23","password":"","slug":"ips-to-be-whitelisted","status":"publish","type":"docs","link":"https:\/\/kb.shortpixel.com\/knowledge-base\/article\/ips-to-be-whitelisted\/","title":{"rendered":"IPs to be whitelisted"},"content":{"rendered":"\n<p>If you get a <a href=\"https:\/\/en.wikipedia.org\/wiki\/HTTP_403\" target=\"_blank\" rel=\"noopener\">403 error<\/a> or your images are not accessible from our servers, please check if you, your hosting provider, or your CDN provider have a security plugin or a firewall which prevents our servers from accessing your images.&nbsp;If this is the case, please whitelist our IPs:<\/p>\n\n\n\n<p><strong>136.243.103.55<\/strong><\/p>\n\n\n\n<p><strong>176.9.77.187<\/strong><\/p>\n\n\n\n<p><strong>176.9.21.94<\/strong><\/p>\n\n\n\n<p><b>176.9.21.54<\/b><\/p>\n\n\n\n<p><b>23.88.6.90<\/b><\/p>\n\n\n\n<p><b>188.40.16.97<\/b><\/p>\n\n\n\n<p><strong>5.161.48.189<\/strong><\/p>\n\n\n\n<p><strong>5.78.136.110<\/strong><\/p>\n\n\n\n<p><strong>5.161.47.113<\/strong><\/p>\n\n\n\n<p><strong>168.119.110.23<\/strong><\/p>\n\n\n\n<p><strong>46.224.144.2<\/strong><\/p>\n\n\n\n<p>These IPs are also available as a JSON <a href=\"https:\/\/api.shortpixel.com\/shortpixel-whitelist-ips.php\" target=\"_blank\" rel=\"noopener\">here<\/a>.<\/p>\n\n\n\n<p>We also recommend whitelisting our user agent, as this approach is more future-proof in case we add or change IP addresses. The user agent always contains the word &#8220;<strong>ShortPixel<\/strong>&#8221; so we recommend setting the whitelist based on it.<\/p>\n\n\n\n<p>You may also need to whitelist the above mentioned IPs if you are using <a href=\"https:\/\/wordpress.org\/plugins\/shortpixel-adaptive-images\/\" target=\"_blank\" rel=\"noopener\">ShortPixel Adaptive Images<\/a> or <a href=\"https:\/\/wordpress.org\/plugins\/autoptimize\/\" target=\"_blank\" rel=\"noopener\">Autoptimize<\/a>&#8216;s Image Optimization,&nbsp;and notice that the images <a href=\"https:\/\/shortpixel.com\/knowledge-base\/article\/why-are-my-images-redirected-from-cdn-shortpixel-ai\/\" rel=\"noopener\">are served from their original location with a redirect<\/a> instead of being served from our CDN.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you get a 403 error or your images are not accessible from our servers, please check if you, your hosting provider, or your CDN provider have a security plugin or a firewall which prevents our servers from accessing your images.&nbsp;If this is the case, please whitelist our IPs: 136.243.103.55 176.9.77.187 176.9.21.94 176.9.21.54 23.88.6.90 188.40.16.97 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"doc_category":[35,37],"glossaries":[],"doc_tag":[],"class_list":["post-726","docs","type-docs","status-publish","hentry","doc_category-shortpixel-adaptive-images","doc_category-shortpixel-image-optimizer"],"blocksy_meta":[],"year_month":"2026-04","word_count":140,"total_views":"1537","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"admin","author_nicename":"admin_mdli53m5","author_url":"https:\/\/kb.shortpixel.com\/author\/admin_mdli53m5\/"},"doc_category_info":[{"term_name":"ShortPixel Adaptive Images","term_url":"https:\/\/kb.shortpixel.com\/knowledge-base\/category\/shortpixel-adaptive-images\/"},{"term_name":"ShortPixel Image Optimizer","term_url":"https:\/\/kb.shortpixel.com\/knowledge-base\/category\/shortpixel-image-optimizer\/"}],"doc_tag_info":[],"knowledge_base_info":[],"knowledge_base_slug":[],"_links":{"self":[{"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs\/726","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/comments?post=726"}],"version-history":[{"count":7,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs\/726\/revisions"}],"predecessor-version":[{"id":2888,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs\/726\/revisions\/2888"}],"wp:attachment":[{"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/media?parent=726"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/doc_category?post=726"},{"taxonomy":"glossaries","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/glossaries?post=726"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/doc_tag?post=726"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}