23.81.81.172
Classification: Malicious
23.81.81.172 is a malicious IP address. Reported by 3 threat sources, last seen 2026-09-07. Network: AS15003 Nobis Technology Group LLC.
Blacklist sightings
| Description | Source | First seen | Last seen | Labels | MITRE ATT&CK |
|---|---|---|---|---|---|
| HTTP Spammer | StopForumSpam.com | 2023-07-05 21:13:50 | 2026-09-07 07:03:39 | malicious-activity | |
| Mail Spammer | Abuseat.org | 2023-06-29 09:10:17 | 2023-06-29 09:10:17 | ||
| HTTP Spammer | Cleantalk.org | 2023-06-29 09:10:15 | 2023-06-29 09:10:15 | malicious-activity |
Tags
bot abuseWhois information
- AS name
- AS15003 Nobis Technology Group LLC
- AS registry
- arin
- AS date
- 2013-05-06 00:00:00
- AS CIDR
- 23.81.80.0/22
- CIDR
- 23.82.0.0/16, 23.81.48.0/20, 23.83.0.0/18, 23.81.64.0/18, 23.81.128.0/17
- Registrant
- Leaseweb USA, Inc.
- Address
- 9480 Innovation Dr
- City
- Manassas
- State
- VA
- Postal code
- 20109
- Country
- US — United States 🇺🇸
- Contact email
- [email protected], [email protected]
- First indexed
- 2023-06-29 09:10:15
- Last updated
- 2026-09-07 07:03:39
Malicious IPs in the same CIDR
23.81.81.5 23.81.81.147 23.81.82.61 23.81.80.115 23.81.82.154 23.81.82.78 23.81.82.127 23.81.82.71 23.81.81.196 23.81.81.107 23.81.81.172 23.81.81.188