Instantly check IP/Email/Domain in 50+ anti-spam blacklists. Find proof of blacklist record in anti-spam databases. Enhance security now!

The blacklist check will test a mail server IP address against over 100 DNS based email blacklists. (Commonly called Realtime blacklist, DNSBL or RBL). If your mail server has been blacklisted, some email you send may not be delivered. Email blacklists are a common way of reducing spam.

DNSBL Information provides a single place where you can check that blacklist status of your mail server's IP address on more than 100 DNS based blacklists. To start just enter the IP address of your mail server above and press the "CHECK THIS IP" button.

IP Blacklist Check. If the checked IP address was found to be sending spam emails, it will be listed in Email Blacklists. Most Email blackists use DNS queries for checking IP addresses, because DNS queries are fast and efficient. They are also known as DNS Blacklists or DNSBL.

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.

Domain DNS Health Checker Tool. Find issues, warnings and complete information (standard procedures and best practices) regarding your domain's DNS. Also check your website's A record and MX record IP in blacklists. This tool offers complete DNS health checkup for your domain.

Check if an IP address is blacklisted across various DNSBL services. Protect your network and email reputation with our free IP Blacklist Checker tool.

DNS Robot's IP Blacklist Checker provides real-time blacklist checking for any IP address. This tool allows you to verify whether your IP address has been blacklisted by various popular blacklist services.

All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Input a domain name or IP Address or Host Name. Links in the results will guide you to other relevant tools and information. And you'll have a chronological history of your results. If you already know exactly what you want, you can force a particular test or lookup.

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.