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CIDR Range

104.28.32.128/25

128 IPs /25 Cloudflare, Inc. AS13335 United States ARIN
Addresses
128
128
IP Range
104.28.32.128
→ 104.28.32.255
Sub-ranges
50+
within this block
PTR Density
0.0%
0 of 128 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.

73/100
Moderate
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 104.28.32.128/25

CIDRIPsOrganizationASNCountry
104.28.32.192/29 8 Cloudflare, Inc. AS13335 US
104.28.32.128/30 4 Cloudflare, Inc. AS13335 US
104.28.32.132/30 4 Cloudflare, Inc. AS13335 US
104.28.32.222/31 2 Cloudflare, Inc. AS13335 US
104.28.32.190/31 2 Cloudflare, Inc. AS13335 US
104.28.32.188/31 2 Cloudflare, Inc. AS13335 US
104.28.32.186/31 2 Cloudflare, Inc. AS13335 US
104.28.32.184/31 2 Cloudflare, Inc. AS13335 US
104.28.32.182/31 2 Cloudflare, Inc. AS13335 US
104.28.32.180/31 2 Cloudflare, Inc. AS13335 US
104.28.32.244/31 2 Cloudflare, Inc. AS13335 US
104.28.32.242/31 2 Cloudflare, Inc. AS13335 US
104.28.32.240/31 2 Cloudflare, Inc. AS13335 US
104.28.32.224/31 2 Cloudflare, Inc. AS13335 US
104.28.32.226/31 2 Cloudflare, Inc. AS13335 US
104.28.32.228/31 2 Cloudflare, Inc. AS13335 US
104.28.32.230/31 2 Cloudflare, Inc. AS13335 US
104.28.32.232/31 2 Cloudflare, Inc. AS13335 US
104.28.32.234/31 2 Cloudflare, Inc. AS13335 US
104.28.32.236/31 2 Cloudflare, Inc. AS13335 US
104.28.32.238/31 2 Cloudflare, Inc. AS13335 US
104.28.32.178/31 2 Cloudflare, Inc. AS13335 US
104.28.32.176/31 2 Cloudflare, Inc. AS13335 US
104.28.32.174/31 2 Cloudflare, Inc. AS13335 US
104.28.32.142/31 2 Cloudflare, Inc. AS13335 US
104.28.32.144/31 2 Cloudflare, Inc. AS13335 US
104.28.32.146/31 2 Cloudflare, Inc. AS13335 US
104.28.32.148/31 2 Cloudflare, Inc. AS13335 US
104.28.32.150/31 2 Cloudflare, Inc. AS13335 US
104.28.32.152/31 2 Cloudflare, Inc. AS13335 US
104.28.32.158/31 2 Cloudflare, Inc. AS13335 US
104.28.32.156/31 2 Cloudflare, Inc. AS13335 US

First and last addresses in 104.28.32.128/25

104.28.32.128/25 runs from 104.28.32.128 to 104.28.32.255.

First 16
104.28.32.128 104.28.32.129 104.28.32.130 104.28.32.131 104.28.32.132 104.28.32.133 104.28.32.134 104.28.32.135 104.28.32.136 104.28.32.137 104.28.32.138 104.28.32.139 104.28.32.140 104.28.32.141 104.28.32.142 104.28.32.143
Last 16
104.28.32.240 104.28.32.241 104.28.32.242 104.28.32.243 104.28.32.244 104.28.32.245 104.28.32.246 104.28.32.247 104.28.32.248 104.28.32.249 104.28.32.250 104.28.32.251 104.28.32.252 104.28.32.253 104.28.32.254 104.28.32.255

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 104.28.32.0/24.

Announced prefix
104.28.32.0/24
Origin AS
AS13335
Announcement samples
18,960
Last seen
2026-11-13 19:33:15

RIR Ownership History

Atom feed ⇲

Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours.

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

Frequently Asked Questions

What is 104.28.32.128/25?

104.28.32.128/25 is a CIDR network block containing 128 IPv4 addresses (from 104.28.32.128 to 104.28.32.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 104.28.32.128/25 network?

The 104.28.32.128/25 range is allocated to Cloudflare, Inc. and announced via AS13335 from United States.

How many IP addresses are in 104.28.32.128/25?

104.28.32.128/25 contains exactly 128 usable IPv4 addresses. A /25 prefix length means 128 addresses are covered by this single routing entry.

Last updated: 2026-11-13 19:54:05 UTC
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