104.28.221.128/26 CIDR Lookup — 64 IPs Owned…

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

68/100

Moderate

How this score is built

Baseline (neutral) 65
Established allocation (12y) +3
Trust score 68 / 100

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 104.28.221.128/26

CIDR	IPs	Organization	ASN	Country
104.28.221.128/27	32	Cloudflare, Inc.	AS13335	US
104.28.221.176/28	16	Cloudflare, Inc.	AS13335	US
104.28.221.160/28	16	Cloudflare, Inc.	AS13335	US
104.28.221.176/29	8	Cloudflare, Inc.	AS13335	US
104.28.221.176/29	8	Cloudflare, Inc.	AS13335	US
104.28.221.136/29	8	Cloudflare, Inc.	AS13335	FR
104.28.221.136/29	8	Cloudflare, Inc.	AS13335	US
104.28.221.136/29	8	Cloudflare, Inc.	AS13335	FR
104.28.221.148/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.128/30	4	Cloudflare, Inc.	AS13335	IN
104.28.221.148/30	4	Cloudflare, Inc.	AS13335	UA
104.28.221.168/30	4	Cloudflare, Inc.	AS13335	IT
104.28.221.168/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.160/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.168/30	4	Cloudflare, Inc.	AS13335	IT
104.28.221.156/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.156/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.156/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.160/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.148/30	4	Cloudflare, Inc.	AS13335	UA
104.28.221.160/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.176/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.128/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.184/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.128/30	4	Cloudflare, Inc.	AS13335	IN
104.28.221.184/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.184/30	4	Cloudflare, Inc.	AS13335	US
104.28.221.174/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.188/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.190/31	2	Cloudflare, Inc.	AS13335	BR
104.28.221.190/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.164/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.164/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.164/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.188/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.188/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.190/31	2	Cloudflare, Inc.	AS13335	BR
104.28.221.174/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.180/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.174/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.182/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.146/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.146/31	2	Cloudflare, Inc.	AS13335	UA
104.28.221.144/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.144/31	2	Cloudflare, Inc.	AS13335	FR
104.28.221.146/31	2	Cloudflare, Inc.	AS13335	UA
104.28.221.144/31	2	Cloudflare, Inc.	AS13335	FR
104.28.221.154/31	2	Cloudflare, Inc.	AS13335	US
104.28.221.132/31	2	Cloudflare, Inc.	AS13335	IN
104.28.221.132/31	2	Cloudflare, Inc.	AS13335	US

All 64 IP addresses in 104.28.221.128/26

104.28.221.128 104.28.221.129 104.28.221.130 104.28.221.131 104.28.221.132 104.28.221.133 104.28.221.134 104.28.221.135 104.28.221.136 104.28.221.137 104.28.221.138 104.28.221.139 104.28.221.140 104.28.221.141 104.28.221.142 104.28.221.143 104.28.221.144 104.28.221.145 104.28.221.146 104.28.221.147 104.28.221.148 104.28.221.149 104.28.221.150 104.28.221.151 104.28.221.152 104.28.221.153 104.28.221.154 104.28.221.155 104.28.221.156 104.28.221.157 104.28.221.158 104.28.221.159 104.28.221.160 104.28.221.161 104.28.221.162 104.28.221.163 104.28.221.164 104.28.221.165 104.28.221.166 104.28.221.167 104.28.221.168 104.28.221.169 104.28.221.170 104.28.221.171 104.28.221.172 104.28.221.173 104.28.221.174 104.28.221.175 104.28.221.176 104.28.221.177 104.28.221.178 104.28.221.179 104.28.221.180 104.28.221.181 104.28.221.182 104.28.221.183 104.28.221.184 104.28.221.185 104.28.221.186 104.28.221.187 104.28.221.188 104.28.221.189 104.28.221.190 104.28.221.191

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 104.28.221.0/24.

Announced prefix

104.28.221.0/24

Origin AS

AS13335

Announcement samples

5,913

Last seen

2026-07-28 18:44:09

RIR Ownership History

Atom feed ⇲

Allocation changes captured weekly from regional internet registry (RIR) delegation files.

Date	Event	From	To	RIR
2026-05-10	New Allocation	—	US	arin

Frequently Asked Questions

What is 104.28.221.128/26?

104.28.221.128/26 is a CIDR network block containing 64 IPv4 addresses (from 104.28.221.128 to 104.28.221.191). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 104.28.221.128/26 network?

The 104.28.221.128/26 range is allocated to Cloudflare, Inc. and announced via AS13335 from United States.

How many IP addresses are in 104.28.221.128/26?

104.28.221.128/26 contains exactly 64 usable IPv4 addresses. A /26 prefix length means 64 addresses are covered by this single routing entry.