3.99.21.227
Classification: Suspicious
3.99.21.227 is a suspicious IP address. Reported by 1 threat source, last seen 2026-09-09. Network: AS16509 Amazon Data Services Canada.
Current activity
- Open proxy — Provides anonymization that can hide an attacker.
Blacklist sightings
| Description | Source | First seen | Last seen | Labels | MITRE ATT&CK |
|---|---|---|---|---|---|
| Proxy | FireHOL | 2026-07-17 17:24:33 | 2026-09-09 15:29:11 | anomalous-activity anonymization proxy | |
| Anonymizer | FireHOL | 2026-07-17 16:25:15 | 2026-09-09 14:30:23 | anomalous-activity anonymization |
Tags
anonymizationWhois information
- AS name
- AS16509 Amazon Data Services Canada
- Registrant
- Amazon Data Services Canada
- City
- Toronto
- Postal code
- M4S
- Country
- CA — Canada 🇨🇦
- First indexed
- 2026-07-17 16:25:15
- Last updated
- 2026-09-09 15:29:11