Is my domain blocklisted?
Check your sending domain and its mail-server IPs against the major email blocklists — live, in seconds. Nothing to upload.
We resolve your domain's own IP, its mail-server (MX) IPs, and any IPs it declares in SPF, then query the major email blocklists in real time. A "listing" is what quietly sends your mail to spam — mailbox providers like Gmail and Outlook consult these lists on every message.
Blocklist FAQ
What is an email blocklist (DNSBL)?
It's a published, real-time list of IP addresses and domains known for sending spam or abuse. Mailbox providers check these lists on every inbound message; if your sending IP is listed, your mail can land in spam or be rejected before it's ever seen.
Could a blocklist be why my mail goes to spam?
Often, yes. A single listed sending IP is one of the most common silent causes of a deliverability drop. Because the check happens at the receiving server, you usually get no bounce that names the blocklist — which is why monitoring matters.
How do I get removed from a blocklist?
Fix the underlying cause first — a compromised or misconfigured host, or a bad neighbor on a shared IP — then submit the list's removal request. Spamhaus, Barracuda, and SpamCop each publish a removal form. Delisting is usually quick once the cause is resolved; re-listing is likely if it isn't.
Which blocklists does this tool check?
Spamhaus ZEN, Spamhaus DBL, Barracuda, SpamCop. Spamhaus is the list most mailbox providers weight most heavily, so a Spamhaus listing is the most urgent to clear.
Do you upload or store my domain?
No. The check runs live over public DNS and nothing about your query is stored. If you want continuous coverage, you can optionally enroll a domain for free monitoring — that's the only path that keeps any state.