Welcome
fmb.la is a free composite blocklist for email classification, weighted from multiple sources so only the worst actors are listed.
Lookup
An IP address of either family, an AS number, or a domain name.
Currently listed
187,736-204,135 | individual IP addresses
1,006-1,334 | netblocks with too many listed addresses
64-70 | whole autonomous systems
Recently listed ASNs
| ASN | Operator | Listed |
|---|---|---|
| AS142647 |  Nasstec Airnet Networks Private Limited |
2026-11-14 |
| AS394192 |  Fastly Inc. |
2026-11-14 |
| AS135377 |  UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED |
2026-11-13 |
| AS266702 |  MEGALINK S.R.L. |
2026-11-13 |
| AS401401 | Unredacted Inc |
2026-11-12 |
| AS43060 |  IPLUS LLC |
2026-11-12 |
| AS56400 |  SPD Chernega Aleksandr Anatolevich |
2026-11-12 |
| AS151330 | PLAY BROADBAND (PRIVATE) LIMITED |
2026-11-12 |
| AS393406 | DigitalOcean |
2026-11-11 |
| AS35048 |  Biterika Group LLC |
2026-11-10 |