The blacklist check is a tool that assesses a mail server's IP address by cross-referencing it with more than 100 DNS-based email blacklists, often referred to as Realtime blacklists, DNSBLs, or RBLs. When a mail server's IP address is blacklisted, there is a risk that some of the emails sent from that server may not reach their intended recipients.
These email blacklists serve as a widely used method for minimizing the impact of spam emails.
Free DNS lookup tool provided by ElectroDash.
Results are provided for informational purposes only and come with no guarantee. DNS responses can vary by resolver, network, location, caching behavior, and record TTL.
{"probe_verify_ssl":true,"propagation_share_ttl_days":7,"dkim_checker_btn":{"text":"Check","color":"#5CC9FF","text_color":"#000000"},"propagation_share_enabled":true,"name":"Electro DNS","ads":{"one":"","two":"","three":"","four":"","five":"","six":""},"socials":[],"colors":{"primary":"#64acdf","secondary":"#2fc10a","tertiary":"#d2ab3e"},"global":{"css":"","js":"","header":"","footer":""},"cookie":{"enable":true,"text":"<p>By using this website you agree to our <a href=\"#\" target=\"_blank\">Cookie Policy<\/a><\/p>"},"font_family":"Poppins","text":{"above_map":"<h1>ElectroDash DNS Services<\/h1><p><br><\/p><p><span style=\"color: rgb(136, 136, 136);\">\ufeffWhen you update DNS records, move hosting, launch a site, or change email authentication settings, the change does not appear everywhere at once. Use the free ElectroDash DNS Checker to see how your domain resolves across selected DNS servers worldwide.<\/span><\/p><p><br><\/p><p><span style=\"color: rgb(136, 136, 136);\">Enter a domain, choose a record type, and verify what the internet is seeing right now.<\/span><\/p>","below_map":"<p><span style=\"color: rgb(136, 136, 136);\">DNS updates often begin appearing within minutes, but full propagation can take up to 24\u201348 hours depending on the record\u2019s TTL and cached results across networks.<\/span><\/p><p><br><\/p><p><span style=\"color: rgb(136, 136, 136);\">Use this checker to verify changes to:<\/span><\/p><p><br><\/p><ul><li><strong style=\"color: rgb(136, 136, 136);\">A \/ CNAME records<\/strong><span style=\"color: rgb(136, 136, 136);\"> after a website launch, host move, or domain change<\/span><\/li><li><strong style=\"color: rgb(136, 136, 136);\">MX, SPF, DKIM, and DMARC records<\/strong><span style=\"color: rgb(136, 136, 136);\"> after email setup or deliverability updates<\/span><\/li><li><strong style=\"color: rgb(136, 136, 136);\">TXT, NS, CAA, and other DNS records<\/strong><span style=\"color: rgb(136, 136, 136);\"> during domain configuration or troubleshooting<\/span><\/li><\/ul><p><br><\/p><p><span style=\"color: rgb(136, 136, 136);\">Different results across locations usually mean a resolver is still returning cached information.<\/span><\/p>","footer":"<p><strong style=\"color: rgb(136, 136, 136);\">Free DNS lookup tool provided by ElectroDash.<\/strong><\/p><p><br><\/p><p><span style=\"color: rgb(136, 136, 136);\">Results are provided for informational purposes only and come with no guarantee. DNS responses can vary by resolver, network, location, caching behavior, and record TTL.<\/span><\/p><p><br><\/p><p class=\"ql-align-center\"><span style=\"color: rgb(136, 136, 136);\">\u00a9 2026 ElectroDash. All rights reserved.<\/span><\/p>"},"find_btn":{"text":"Find","color":"#F3DF00","text_color":"#000000"},"whois_btn":{"text":"Lookup","color":"#64acdf","text_color":"#000000"},"ip_btn":{"text":"Lookup","color":"#64acdf","text_color":"#000000"},"blacklist_btn":{"text":"Check","color":"#64acdf","text_color":"#000000"},"dmarc_btn":{"text":"Check","color":"#64acdf","text_color":"#000000"},"email_headers_btn":{"text":"Extract","color":"#64acdf","text_color":"#000000"},"spf_checker_btn":{"text":"Check","color":"#64acdf","text_color":"#000000"},"smtp_tester_btn":{"text":"Test","color":"#64acdf","text_color":"#000000"},"default_dns":"A","enable_logs":true,"show_dark_mode":false,"enable_ad_block_detector":false,"map_fail_reloader":false,"timeout":5,"blacklist":{"servers":["dyna.spamrats.com","all.s5h.net","b.barracudacentral.org","spam.spamrats.com","zen.spamhaus.org","dnsbl.dronebl.org","spam.rbl.blockedservers.com","rbl.interserver.net","spamsources.fabel.dk","bl.scientificspam.net","dnsbl.zapbl.net","bl.rbl.scrolloutf1.com","dnsbl.kempt.net","mail-abuse.com","bl.score.senderscore.com","exploit.mail.abusix.zone","new.spam.dnsbl.sorbs.net","block.dnsbl.sorbs.net","bl.spamcop.net","black.mail.abusix.zone","multi.surbl.org","escalations.dnsbl.sorbs.net","zombie.dnsbl.sorbs.net","dnsbl.tornevall.org","bl.nordspam.com","fnrbl.fast.net","talosintelligence.com","truncate.gbudb.net","0spam.fusionzero.com","bl.nosolicitado.org"]},"captcha":"off","recaptcha2":{"site_key":"","secret_key":""},"recaptcha3":{"site_key":"","secret_key":""},"hcaptcha":{"site_key":"","secret_key":""}}