# Free Email Blacklist & IP Blocklist Check

> Free email blacklist check. Test your domain and sending mail server IP across 50+ major DNSBL blocklists including Spamhaus, Barracuda, and SORBS instantly.

Blocklists are shared reputation databases that receiving servers consult before accepting mail. Being listed on a major one can stop delivery entirely, and on a shared IP you may be listed for someone else's behaviour.

## Checks Performed
- Major IP blocklists — Spamhaus, Barracuda, SpamCop
- Domain blocklists — SURBL, URIBL
- Whether the listing is for the IP or a neighbour on a shared range
- Delisting route for each list that has you

## Sample Verification (198.51.100.24)
Clean across all five lists checked.

| Check | Verdict | Details |
| --- | --- | --- |
| Spamhaus SBL | PASS | not listed |
| Spamhaus PBL | PASS | not listed |
| Barracuda | PASS | not listed |
| SpamCop | PASS | not listed |
| SURBL | PASS | not listed |

## Frequently Asked Questions
### I am on a blocklist. What now?

Find the cause first — delisting without fixing it gets you relisted, usually faster. Check your complaint and bounce rates, look for a compromised account sending through you, and confirm you are not mailing addresses that never opted in. Then use the list's own delisting form.

### Why am I listed when I did nothing wrong?

On a shared IP pool your reputation is your neighbours' reputation. This is the strongest argument for a provider that vets accounts at signup and suspends bad senders automatically rather than reactively.

### Do blocklists expire?

Some listings age out automatically after a period of clean sending; others require an explicit delisting request. Repeated listings take progressively longer to clear.