5.81.155.3
Classification: Malicious
5.81.155.3 is a malicious IP address. Reported by 1 threat source, last seen 2026-09-03. Network: AS2856 BT Infrastructure Layer.
Current activity
- Known attacker — Seen launching attacks over the Internet.
Blacklist sightings
| Description | Source | First seen | Last seen | Labels | MITRE ATT&CK |
|---|---|---|---|---|---|
| HTTP Spammer | StopForumSpam.com | 2026-08-04 09:03:32 | 2026-09-03 07:04:02 | attacker malicious-activity |
Tags
bot abuseWhois information
- AS name
- AS2856 BT Infrastructure Layer
- Registrant
- BT Infrastructure Layer
- City
- Littlehampton
- Postal code
- BN17 6
- Country
- GB — United Kingdom 🇬🇧
- First indexed
- 2026-08-04 09:03:32
- Last updated
- 2026-09-03 07:04:04