Blocklist lookup

Is your domain blacklisted?

Paste a sending domain or mail-originating IPv4 — we fan out across Spamhaus, SenderScore, Cisco Talos, Barracuda, SORBS, Spamcop and the rest of the lists that actually move the inbox needle, then show every listing plus the upstream delist page for each.

Check any domain or sending IP

Paste the domain you send mail from, or the IP your mail originates from — we'll query Spamhaus, SenderScore, Cisco Talos, Barracuda, SORBS, Spamcop and the rest of the blocklists that affect inbox placement, and show every listing plus the delist procedure for each.

Blocklist report

Submit a domain or IPv4 address above to run a blocklist lookup.

We'll fan out across every major blocklist that affects inbox placement, show per-list verdicts, and link to each list's delist page.

No active listings

No listings to delist yet.

Blocklists change daily and listings can appear overnight when a recipient flags traffic from your IP. Continuous monitoring catches new listings before they accumulate — see the footer below.