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AbuseIPDB » 104.21.72.251

104.21.72.251 was found in our database!

This IP was reported 46 times. Confidence of Abuse is 0%: ?

ISP	Cloudflare, Inc.
Usage Type	Content Delivery Network
ASN	AS13335
Domain Name	cloudflare.com
Country	🇺🇸 United States of America
City	San Francisco, California

IP info including ISP, Usage Type, and Location provided by IPInfo. Updated weekly.

Important Note: 104.21.72.251 is an IP address from within our whitelist belonging to the subnet 104.16.0.0/13, which we identify as: "Cloudflare Reverse Proxy".

Whitelisted netblocks are typically owned by trusted entities, such as Google or Microsoft who may use them for search engine spiders. However, these same entities sometimes also provide cloud servers and mail services which are easily abused. Pay special attention when trusting or distrusting these IPs.

Report 104.21.72.251

Whois 104.21.72.251

IP Abuse Reports for 104.21.72.251:

This IP address has been reported a total of 46 times from 3 distinct sources. 104.21.72.251 was first reported on December 6th 2021, and the most recent report was 1 month ago.

Old Reports: The most recent abuse report for this IP address is from 1 month ago . It is possible that this IP is no longer involved in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇺🇸 xmission.com	2026-04-29 13:16:14 (1 month ago)	Blocked by UFW (TCP on 43286) Source port: 443 TTL: 59 Packet length: 40 TOS: 0x00 This report (for ... show more Blocked by UFW (TCP on 43286) Source port: 443 TTL: 59 Packet length: 40 TOS: 0x00 This report (for 104.21.72.251) was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 xmission.com	2026-04-27 04:07:53 (1 month ago)	Blocked by UFW (TCP on 44642) Source port: 443 TTL: 55 Packet length: 40 TOS: 0x08 This report (for ... show more Blocked by UFW (TCP on 44642) Source port: 443 TTL: 55 Packet length: 40 TOS: 0x08 This report (for 104.21.72.251) was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 xmission.com	2026-04-21 20:35:10 (1 month ago)	Blocked by UFW (TCP on 40100) Source port: 443 TTL: 55 Packet length: 40 TOS: 0x08 This report (for ... show more Blocked by UFW (TCP on 40100) Source port: 443 TTL: 55 Packet length: 40 TOS: 0x08 This report (for 104.21.72.251) was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 xmission.com	2026-04-17 21:08:46 (1 month ago)	Blocked by UFW (TCP on 56492) Source port: 443 TTL: 55 Packet length: 40 TOS: 0x08 This report (for ... show more Blocked by UFW (TCP on 56492) Source port: 443 TTL: 55 Packet length: 40 TOS: 0x08 This report (for 104.21.72.251) was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 xmission.com	2026-04-17 07:44:16 (1 month ago)	Blocked by UFW (TCP on 49356) Source port: 443 TTL: 55 Packet length: 40 TOS: 0x08 This report (for ... show more Blocked by UFW (TCP on 49356) Source port: 443 TTL: 55 Packet length: 40 TOS: 0x08 This report (for 104.21.72.251) was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 creations.works	2025-10-09 12:12:29 (8 months ago)	Blocked by UFW on vds [41374/tcp] Source port: 443 TTL: 58 Packet length: 91 TOS: 0x00 This report ... show more Blocked by UFW on vds [41374/tcp] Source port: 443 TTL: 58 Packet length: 91 TOS: 0x00 This report was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 creations.works	2025-10-07 17:09:36 (8 months ago)	Blocked by UFW on vds [35900/tcp] Source port: 443 TTL: 57 Packet length: 91 TOS: 0x00 This report ... show more Blocked by UFW on vds [35900/tcp] Source port: 443 TTL: 57 Packet length: 91 TOS: 0x00 This report was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 creations.works	2025-09-10 15:14:14 (9 months ago)	Blocked by UFW on vds [41444/tcp] Source port: 443 TTL: 58 Packet length: 91 TOS: 0x00 This report ... show more Blocked by UFW on vds [41444/tcp] Source port: 443 TTL: 58 Packet length: 91 TOS: 0x00 This report was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 creations.works	2025-09-08 13:19:40 (9 months ago)	Blocked by UFW on vds [53618/tcp] Source port: 443 TTL: 56 Packet length: 91 TOS: 0x00 This report ... show more Blocked by UFW on vds [53618/tcp] Source port: 443 TTL: 56 Packet length: 91 TOS: 0x00 This report was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 creations.works	2025-09-04 15:57:05 (9 months ago)	Blocked by UFW on vds [52352/tcp] Source port: 443 TTL: 56 Packet length: 545 TOS: 0x00 This report ... show more Blocked by UFW on vds [52352/tcp] Source port: 443 TTL: 56 Packet length: 545 TOS: 0x00 This report was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 creations.works	2025-09-03 16:13:16 (9 months ago)	Blocked by UFW on vds [50302/tcp] Source port: 443 TTL: 58 Packet length: 91 TOS: 0x00 This report ... show more Blocked by UFW on vds [50302/tcp] Source port: 443 TTL: 58 Packet length: 91 TOS: 0x00 This report was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 creations.works	2025-09-02 13:42:20 (9 months ago)	Blocked by UFW on vds [49600/tcp] Source port: 443 TTL: 58 Packet length: 91 TOS: 0x00 This report ... show more Blocked by UFW on vds [49600/tcp] Source port: 443 TTL: 58 Packet length: 91 TOS: 0x00 This report was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 creations.works	2025-08-28 19:08:03 (9 months ago)	Blocked by UFW on vds [34394/tcp] Source port: 443 TTL: 56 Packet length: 552 TOS: 0x00 This report ... show more Blocked by UFW on vds [34394/tcp] Source port: 443 TTL: 56 Packet length: 552 TOS: 0x00 This report was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 creations.works	2025-08-27 21:12:28 (9 months ago)	Blocked by UFW on vds [38948/tcp] Source port: 443 TTL: 55 Packet length: 91 TOS: 0x00 This report ... show more Blocked by UFW on vds [38948/tcp] Source port: 443 TTL: 55 Packet length: 91 TOS: 0x00 This report was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 creations.works	2025-08-26 14:09:34 (9 months ago)	Blocked by UFW on vds [47576/tcp] Source port: 443 TTL: 58 Packet length: 91 TOS: 0x00 This report ... show more Blocked by UFW on vds [47576/tcp] Source port: 443 TTL: 58 Packet length: 91 TOS: 0x00 This report was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan

Showing 1 to 15 of 46 reports

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