Blacklist Checker

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.

Copyright 2024 - Hostnox DNS Checker

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{"name":"Hostnox Global DNS Checker - Propagation Status","ads":{"one":"","two":"","three":"","four":"","five":"","six":""},"socials":[],"colors":{"primary":"#0155b5","secondary":"#2fc10a","tertiary":"#d2ab3e"},"global":{"css":"@media (min-width: 1200px) {\n .container, .container-lg, .container-md, .container-sm, .container-xl {\n max-width: 1450px;\n }\n}","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":"<p>If you're having trouble checking your DNS status, simply enter your domain into the Hostnox DNS Checker tool to view global propagation.<\/p>","below_map":"<p>A DNS checker is a tool used to test and verify the Domain Name System (DNS) records of a domain. DNS is the system that translates human-friendly domain names (like example.com) into IP addresses that computers use to identify each other on the network. Here\u2019s a more detailed look at what a DNS checker is and what you can do with it:<\/p><h3><br><\/h3><h3>What is a DNS Checker?<\/h3><p>A DNS checker is an online tool or software that allows you to:<\/p><ul><li><span style=\"color: var(--tw-prose-bold);\">Verify DNS Records<\/span>: Check the DNS records for a domain to ensure they are set up correctly.<\/li><li><span style=\"color: var(--tw-prose-bold);\">Diagnose Issues<\/span>: Identify and troubleshoot DNS-related issues that might be affecting website accessibility or email delivery.<\/li><li><span style=\"color: var(--tw-prose-bold);\">Monitor DNS Changes<\/span>: Track any changes to the DNS records, which is crucial for security and operational reasons.<\/li><\/ul><h3><br><\/h3><h3>Common DNS Records Checked<\/h3><ul><li><span style=\"color: var(--tw-prose-bold);\">A Record<\/span>: Maps a domain to an IPv4 address.<\/li><li><span style=\"color: var(--tw-prose-bold);\">AAAA Record<\/span>: Maps a domain to an IPv6 address.<\/li><li><span style=\"color: var(--tw-prose-bold);\">CNAME Record<\/span>: Alias of one domain to another domain.<\/li><li><span style=\"color: var(--tw-prose-bold);\">MX Record<\/span>: Mail exchange records that direct email to mail servers.<\/li><li><span style=\"color: var(--tw-prose-bold);\">TXT Record<\/span>: Text records used for various purposes, including SPF (Sender Policy Framework) and verification of domain ownership.<\/li><li><span style=\"color: var(--tw-prose-bold);\">NS Record<\/span>: Name server records that indicate which servers are authoritative for the domain.<\/li><li><span style=\"color: var(--tw-prose-bold);\">SRV Record<\/span>: Service records that define the location of servers for specified services.<\/li><\/ul><h3><br><\/h3><h3>What You Can Do with a DNS Checker<\/h3><ol><li><span style=\"color: var(--tw-prose-bold);\">Verify DNS Configuration<\/span>:<\/li><\/ol><ul><li class=\"ql-indent-1\">Ensure that DNS records are correctly configured and propagate across various DNS servers globally.<\/li><li class=\"ql-indent-1\">Check if changes to DNS records have propagated.<\/li><\/ul><ol><li><span style=\"color: var(--tw-prose-bold);\">Troubleshoot Issues<\/span>:<\/li><\/ol><ul><li class=\"ql-indent-1\">Diagnose issues related to DNS that might be causing website downtime or email delivery problems.<\/li><li class=\"ql-indent-1\">Identify misconfigured or missing DNS records.<\/li><\/ul><ol><li><span style=\"color: var(--tw-prose-bold);\">Monitor DNS Health<\/span>:<\/li><\/ol><ul><li class=\"ql-indent-1\">Regularly monitor the DNS records to detect unauthorized changes which could be a sign of a security breach.<\/li><li class=\"ql-indent-1\">Ensure DNS servers are responding correctly.<\/li><\/ul><ol><li><span style=\"color: var(--tw-prose-bold);\">Enhance Security<\/span>:<\/li><\/ol><ul><li class=\"ql-indent-1\">Verify the implementation of DNS security measures like DNSSEC (Domain Name System Security Extensions).<\/li><li class=\"ql-indent-1\">Check SPF, DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting, and Conformance) records to enhance email security.<\/li><\/ul><ol><li><span style=\"color: var(--tw-prose-bold);\">Optimize Performance<\/span>:<\/li><\/ol><ul><li class=\"ql-indent-1\">Ensure DNS records point to the correct IP addresses for optimal website performance.<\/li><li class=\"ql-indent-1\">Identify and fix any latency issues caused by DNS misconfigurations.<\/li><\/ul><h3><br><\/h3><h3>How to Use a DNS Checker<\/h3><ul><li><span style=\"color: var(--tw-prose-bold);\">Enter Domain<\/span>: Input the domain name you want to check.<\/li><li><span style=\"color: var(--tw-prose-bold);\">Select Record Type<\/span>: Choose the type of DNS record you want to verify (A, AAAA, MX, CNAME, etc.).<\/li><li><span style=\"color: var(--tw-prose-bold);\">Run Check<\/span>: Execute the check to see the current status and configuration of the DNS records.<\/li><li><span style=\"color: var(--tw-prose-bold);\">Analyze Results<\/span>: Review the results to ensure everything is set up correctly and take note of any discrepancies or issues.<\/li><\/ul><p><br><\/p>","footer":"<p class=\"ql-align-center\">Copyright 2024 - Hostnox DNS Checker<\/p>"},"find_btn":{"text":"Find","color":"#F3DF00","text_color":"#000000"},"whois_btn":{"text":"Lookup","color":"#5CC9FF","text_color":"#000000"},"ip_btn":{"text":"Lookup","color":"#5CC9FF","text_color":"#000000"},"blacklist_btn":{"text":"Check","color":"#5CC9FF","text_color":"#000000"},"dmarc_btn":{"text":"Check","color":"#5CC9FF","text_color":"#000000"},"default_dns":"A","enable_logs":false,"show_dark_mode":true,"enable_ad_block_detector":false,"ad_block_detector_filename":"adv_teasers.js","map_fail_reloader":false,"timeout":5,"blacklist":{"servers":["sbl.spamhaus.org","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","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","dyna.spamrats.com","xbl.spamhaus.org","dbl.spamhaus.org","cbl.abuseat.org","noptr.spamrats.com","dnsbl.invaluement.com","ubl.unsubscore.com","psbl.surriel.com","multirbl.valli.org","dnsbl-1.uceprotect.net","dnsbl-2.uceprotect.net","dnsbl-3.uceprotect.net","sorbs.net","dnsbl.sorbs.net"]}}