DNS & Email Tools

Blacklist Check

Check IPs or hosts against the major DNSBL/RBL providers.

Updated 2025-12-01

IP Reputation Check

Blacklist Check

Check if an IP address is listed on spam blacklists (DNSBL/RBL).

About DNSBL/RBL Checks

  • DNSBL (DNS-based Blackhole Lists) track IPs associated with spam
  • Being listed can affect email deliverability
  • Different lists have different criteria and removal processes
  • Check your mail server IP and any IPs you send email from

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Blacklist Check | DNS & Email Tools