Blacklist Monitoring
Know within minutes when your mail server or domain lands on a DNS blacklist — and when it comes off.
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.
Which IPs are checked?
The IPv4/IPv6 addresses of the domain’s A/AAAA records and of every MX host, plus the domain name itself on domain/URI lists.
Included from the Free plan
Start with a free month — no card needed — then choose the plan that fits.