104.28.166.121

Classification: Suspicious

104.28.166.121 is a suspicious IP address. Reported by 2 threat sources, last seen 2026-08-05. 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
HTTP bot Blocklist.de 2026-03-01 04:00:04 2026-08-05 08:00:06 attacker malicious-activity
Suspicious Host AbuseIPDB 2026-02-28 16:50:20 2026-05-30 05:18:34 anomalous-activity
Mail Spammer Blocklist.de 2026-05-21 08:00:47 2026-05-21 08:00:47 malicious-activity
HTTP Attacker Blocklist.de 2026-04-01 03:00:07 2026-04-02 03:00:07 malicious-activity
Malicious Host AbuseIPDB 2026-03-09 20:22:53 2026-03-31 22:50:05 malicious-activity

Tags

attacker spam bruteforce bot apache ddos rfi mail

Whois information

AS name
AS13335 Cloudflare, Inc.
Registrant
Cloudflare, Inc.
City
Washington
State
DC
Postal code
20500
Country
US — United States 🇺🇸
First indexed
2026-03-01 01:44:25
Last updated
2026-08-05 08:00:06