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CIDR Range

104.28.241.0/26

64 IPs /26 Cloudflare, Inc. AS13335 United States ARIN
Addresses
64
64
IP Range
104.28.241.0
→ 104.28.241.63
Sub-ranges
50+
within this block
PTR Density
0.0%
0 of 64 IPs have PTR ~

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

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 104.28.241.0/26

CIDRIPsOrganizationASNCountry
104.28.241.56/29 8 Cloudflare, Inc. AS13335 US
104.28.241.16/29 8 Cloudflare, Inc. AS13335 DE
104.28.241.16/29 8 Cloudflare, Inc. AS13335 DE
104.28.241.16/29 8 Cloudflare, Inc. AS13335 US
104.28.241.56/29 8 Cloudflare, Inc. AS13335 US
104.28.241.52/30 4 Cloudflare, Inc. AS13335 US
104.28.241.32/30 4 Cloudflare, Inc. AS13335 US
104.28.241.32/30 4 Cloudflare, Inc. AS13335 ID
104.28.241.36/30 4 Cloudflare, Inc. AS13335 JP
104.28.241.24/30 4 Cloudflare, Inc. AS13335 GP
104.28.241.24/30 4 Cloudflare, Inc. AS13335 US
104.28.241.24/30 4 Cloudflare, Inc. AS13335 GP
104.28.241.56/30 4 Cloudflare, Inc. AS13335 US
104.28.241.32/30 4 Cloudflare, Inc. AS13335 ID
104.28.241.36/30 4 Cloudflare, Inc. AS13335 US
104.28.241.52/30 4 Cloudflare, Inc. AS13335 US
104.28.241.44/30 4 Cloudflare, Inc. AS13335 KR
104.28.241.44/30 4 Cloudflare, Inc. AS13335 US
104.28.241.44/30 4 Cloudflare, Inc. AS13335 KR
104.28.241.40/30 4 Cloudflare, Inc. AS13335 JP
104.28.241.40/30 4 Cloudflare, Inc. AS13335 US
104.28.241.40/30 4 Cloudflare, Inc. AS13335 JP
104.28.241.52/30 4 Cloudflare, Inc. AS13335 US
104.28.241.36/30 4 Cloudflare, Inc. AS13335 JP
104.28.241.12/30 4 Cloudflare, Inc. AS13335 DE
104.28.241.60/30 4 Cloudflare, Inc. AS13335 US
104.28.241.8/30 4 Cloudflare, Inc. AS13335 US
104.28.241.8/30 4 Cloudflare, Inc. AS13335 BO
104.28.241.8/30 4 Cloudflare, Inc. AS13335 BO
104.28.241.12/30 4 Cloudflare, Inc. AS13335 US
104.28.241.12/30 4 Cloudflare, Inc. AS13335 DE
104.28.241.48/31 2 Cloudflare, Inc. AS13335 KR
104.28.241.2/31 2 Cloudflare, Inc. AS13335 PE
104.28.241.48/31 2 Cloudflare, Inc. AS13335 US
104.28.241.48/31 2 Cloudflare, Inc. AS13335 KR
104.28.241.2/31 2 Cloudflare, Inc. AS13335 PE
104.28.241.2/31 2 Cloudflare, Inc. AS13335 US
104.28.241.0/31 2 Cloudflare, Inc. AS13335 US
104.28.241.0/31 2 Cloudflare, Inc. AS13335 US
104.28.241.6/31 2 Cloudflare, Inc. AS13335 BO
104.28.241.6/31 2 Cloudflare, Inc. AS13335 US
104.28.241.30/31 2 Cloudflare, Inc. AS13335 ID
104.28.241.6/31 2 Cloudflare, Inc. AS13335 BO
104.28.241.30/31 2 Cloudflare, Inc. AS13335 US
104.28.241.30/31 2 Cloudflare, Inc. AS13335 ID
104.28.241.29/32 1 Cloudflare, Inc. AS13335 US
104.28.241.4/32 1 Cloudflare, Inc. AS13335 US
104.28.241.51/32 1 Cloudflare, Inc. AS13335 US
104.28.241.29 1 Cloudflare, Inc. AS13335 ID
104.28.241.50/32 1 Cloudflare, Inc. AS13335 KR

Geolocation

All 64 IP addresses in 104.28.241.0/26

104.28.241.0 104.28.241.1 104.28.241.2 104.28.241.3 104.28.241.4 104.28.241.5 104.28.241.6 104.28.241.7 104.28.241.8 104.28.241.9 104.28.241.10 104.28.241.11 104.28.241.12 104.28.241.13 104.28.241.14 104.28.241.15 104.28.241.16 104.28.241.17 104.28.241.18 104.28.241.19 104.28.241.20 104.28.241.21 104.28.241.22 104.28.241.23 104.28.241.24 104.28.241.25 104.28.241.26 104.28.241.27 104.28.241.28 104.28.241.29 104.28.241.30 104.28.241.31 104.28.241.32 104.28.241.33 104.28.241.34 104.28.241.35 104.28.241.36 104.28.241.37 104.28.241.38 104.28.241.39 104.28.241.40 104.28.241.41 104.28.241.42 104.28.241.43 104.28.241.44 104.28.241.45 104.28.241.46 104.28.241.47 104.28.241.48 104.28.241.49 104.28.241.50 104.28.241.51 104.28.241.52 104.28.241.53 104.28.241.54 104.28.241.55 104.28.241.56 104.28.241.57 104.28.241.58 104.28.241.59 104.28.241.60 104.28.241.61 104.28.241.62 104.28.241.63

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 104.28.241.0/24.

Announced prefix
104.28.241.0/24
Origin AS
AS13335
Announcement samples
5,324
Last seen
2026-07-23 13:30:54

RIR Ownership History

Atom feed ⇲

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

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

Frequently Asked Questions

What is 104.28.241.0/26?

104.28.241.0/26 is a CIDR network block containing 64 IPv4 addresses (from 104.28.241.0 to 104.28.241.63). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 104.28.241.0/26 network?

The 104.28.241.0/26 range is allocated to Cloudflare, Inc. and announced via AS13335 from United States.

How many IP addresses are in 104.28.241.0/26?

104.28.241.0/26 contains exactly 64 usable IPv4 addresses. A /26 prefix length means 64 addresses are covered by this single routing entry.

Last updated: 2026-07-23 13:40:37 UTC
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