IP Lookup Tools Blacklist Check

IP blocklist (DNSBL) check

Find out in one lookup whether an IP address is listed on Spamhaus, SpamCop, Barracuda and 24 blocklists in total. It is the most common reason emails are not delivered.

If you enter a domain name, its A record is resolved and the first public IP address is checked.

What is checked?

Spamhaus ZEN, SpamCop, Barracuda, UCEPROTECT and other major lists
Each list is queried at its own authoritative DNS servers, never through an open resolver
If listed, the reason the list gives and its removal link
End-user range entries such as Spamhaus PBL are flagged separately

How do I read the result?

Being on a single list is not always a problem; entries such as UCEPROTECT level 2 cover a whole network.
Spamhaus listings lower the trust score the most.
The removal link appears under the relevant card in the report.

Frequently asked questions

Is IPv6 supported?

Yes, on the lists that support IPv6. The others are shown as skipped in the report.

What if it says no result?

That list did not answer the query. It is not counted as clean, is left out of the counters and is called out in the report.