Blacklist Monitoring
Know within minutes when your mail server or domain lands on a DNS blacklist — and when it comes off.
Start free Try the free toolsIncluded from the Free plan.
We check every MX and web IP of your domains, plus the domain itself, against 60+ DNSBLs (Spamhaus, SpamCop, Barracuda, SURBL, URIBL and more). New listings trigger an alert with the reason code and delisting link; delistings are confirmed automatically.
60+ lists, in parallel
IP lists and domain/URI lists, queried through our own recursive resolvers so operators like Spamhaus answer correctly.
Reason codes decoded
Spamhaus return codes, SURBL bit-masks and URIBL flags translated into what actually happened.
Delisting links
Every listing includes the operator’s removal page.
Listing history
How often and how long you were listed, per IP.
Frequently asked
Which blacklists do you check?
The full list is visible on every Blacklist Check result. Administrators can add or disable lists from the admin panel.
Can I monitor an IP that is not one of my MX records?
Yes — add it as a monitored IP on any Starter plan or above.
Included in the Free plan and above
Start with a free account — upgrade any time.