104.21.91.66
Classification: Whitelisted
104.21.91.66 is a whitelisted (trusted) IP address. Reported by 1 threat source, last seen 2026-08-27. Network: AS13335 Cloudflare, Inc..
Current activity
- Content Delivery Network — Belongs to a CDN with many allocated resources.
Blacklist sightings
| Description | Source | First seen | Last seen | Labels | MITRE ATT&CK |
|---|---|---|---|---|---|
| Matched whitelist source: Cloudflare | Maltiverse | 2026-05-29 13:18:55 | 2026-08-27 17:15:05 | benign | |
| Phishing | Maltiverse | 2022-04-12 00:43:07 | 2022-04-12 00:43:07 | compromised | |
| Social Engineering | Maltiverse | 2022-04-12 00:43:07 | 2022-04-12 00:43:07 | malicious-activity |
Tags
phishingWhois information
- AS name
- AS13335 Cloudflare, Inc.
- AS registry
- arin
- AS date
- 2014-03-28 00:00:00
- AS CIDR
- 104.21.80.0/20
- CIDR
- 104.16.0.0/12
- Registrant
- Cloudflare, Inc.
- Address
- 101 Townsend Street
- City
- San Francisco
- State
- CA
- Postal code
- 94102
- Country
- US — United States 🇺🇸
- Contact email
- [email protected], [email protected], [email protected]
- First indexed
- 2022-04-12 00:43:07
- Last updated
- 2026-08-27 17:15:05