IP Tools / Blacklist Check

IP Blacklist & Email Blacklist Check

Check IPv4, IPv6, and email/domain reputation signals with DNS-based lookups, validation, and a plain-language result summary.

Browser ready DNS proxy Friendly output

Input

Auto detect is best when you are not sure which format you have.

Output

Paste an IP or email address to begin.
Mode: Auto Risk: Ready Checks: 0

Lookup details

Notes

This page uses DNS-over-HTTPS through the local server so the browser can run blacklist queries without CORS problems.

If a DNS check times out or a provider blocks the query, the page keeps the result friendly and marks that lookup as inconclusive.

How it works

IP checks use DNSBL-style lookups against known reputation zones. Email checks validate syntax, look up the mail domain's MX records, and check the domain against a reputation zone plus a small disposable-domain list.