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CIDR Range

104.28.99.128/26

Addresses
64
64
Sub-ranges
39+
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 104.28.99.128/26

CIDRIPsOrganizationASNCountry
104.28.99.152/29 8 Cloudflare, Inc. AS13335 US
104.28.99.160/30 4 Cloudflare, Inc. AS13335 US
104.28.99.144/30 4 Cloudflare, Inc. AS13335 US
104.28.99.174/31 2 Cloudflare, Inc. AS13335 US
104.28.99.172/31 2 Cloudflare, Inc. AS13335 US
104.28.99.142/31 2 Cloudflare, Inc. AS13335 US
104.28.99.148/31 2 Cloudflare, Inc. AS13335 US
104.28.99.170/31 2 Cloudflare, Inc. AS13335 US
104.28.99.168/31 2 Cloudflare, Inc. AS13335 US
104.28.99.166/31 2 Cloudflare, Inc. AS13335 US
104.28.99.176/31 2 Cloudflare, Inc. AS13335 US
104.28.99.178/31 2 Cloudflare, Inc. AS13335 US
104.28.99.164/31 2 Cloudflare, Inc. AS13335 US
104.28.99.182/31 2 Cloudflare, Inc. AS13335 US
104.28.99.180/31 2 Cloudflare, Inc. AS13335 US
104.28.99.184/32 1 Cloudflare, Inc. AS13335 US
104.28.99.185/32 1 Cloudflare, Inc. AS13335 US
104.28.99.187/32 1 Cloudflare, Inc. AS13335 US
104.28.99.188/32 1 Cloudflare, Inc. AS13335 US
104.28.99.189/32 1 Cloudflare, Inc. AS13335 US
104.28.99.190/32 1 Cloudflare, Inc. AS13335 US
104.28.99.186/32 1 Cloudflare, Inc. AS13335 US
104.28.99.128/32 1 Cloudflare, Inc. AS13335 US
104.28.99.129/32 1 Cloudflare, Inc. AS13335 US
104.28.99.130/32 1 Cloudflare, Inc. AS13335 US
104.28.99.131/32 1 Cloudflare, Inc. AS13335 US
104.28.99.132/32 1 Cloudflare, Inc. AS13335 US
104.28.99.133/32 1 Cloudflare, Inc. AS13335 US
104.28.99.134/32 1 Cloudflare, Inc. AS13335 US
104.28.99.135/32 1 Cloudflare, Inc. AS13335 US
104.28.99.136/32 1 Cloudflare, Inc. AS13335 US
104.28.99.137/32 1 Cloudflare, Inc. AS13335 US
104.28.99.138/32 1 Cloudflare, Inc. AS13335 US
104.28.99.139/32 1 Cloudflare, Inc. AS13335 US
104.28.99.140/32 1 Cloudflare, Inc. AS13335 US
104.28.99.141/32 1 Cloudflare, Inc. AS13335 US
104.28.99.150/32 1 Cloudflare, Inc. AS13335 US
104.28.99.151/32 1 Cloudflare, Inc. AS13335 US
104.28.99.191/32 1 Cloudflare, Inc. AS13335 US

All 64 IP addresses in 104.28.99.128/26

Not announced as an exact prefix — covered by the announced supernet 104.28.99.0/24.

Announced prefix
Origin AS
Announcement samples
5,480
Last seen
2026-07-23 07:59:45

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 104.28.99.128/26?

104.28.99.128/26 is a CIDR network block containing 64 IPv4 addresses (from 104.28.99.128 to 104.28.99.191). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 104.28.99.128/26 network?

The 104.28.99.128/26 range is allocated to Cloudflare, Inc. and announced via AS13335 from Japan.

How many IP addresses are in 104.28.99.128/26?

104.28.99.128/26 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 08:25:32 UTC
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