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CIDR Range

104.28.63.128/27

Addresses
32
32
Sub-ranges
32+
within this block
PTR Density
0.0%
0 of 32 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 v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 104.28.63.128/27

CIDRIPsOrganizationASNCountry
104.28.63.128/32 1 Cloudflare, Inc. AS13335 US
104.28.63.145/32 1 Cloudflare, Inc. AS13335 US
104.28.63.146/32 1 Cloudflare, Inc. AS13335 US
104.28.63.147/32 1 Cloudflare, Inc. AS13335 US
104.28.63.148/32 1 Cloudflare, Inc. AS13335 US
104.28.63.149/32 1 Cloudflare, Inc. AS13335 US
104.28.63.150/32 1 Cloudflare, Inc. AS13335 US
104.28.63.151/32 1 Cloudflare, Inc. AS13335 US
104.28.63.152/32 1 Cloudflare, Inc. AS13335 US
104.28.63.153/32 1 Cloudflare, Inc. AS13335 US
104.28.63.154/32 1 Cloudflare, Inc. AS13335 US
104.28.63.155/32 1 Cloudflare, Inc. AS13335 US
104.28.63.156/32 1 Cloudflare, Inc. AS13335 US
104.28.63.157/32 1 Cloudflare, Inc. AS13335 US
104.28.63.158/32 1 Cloudflare, Inc. AS13335 US
104.28.63.144/32 1 Cloudflare, Inc. AS13335 US
104.28.63.143/32 1 Cloudflare, Inc. AS13335 US
104.28.63.129/32 1 Cloudflare, Inc. AS13335 US
104.28.63.130/32 1 Cloudflare, Inc. AS13335 US
104.28.63.131/32 1 Cloudflare, Inc. AS13335 US
104.28.63.132/32 1 Cloudflare, Inc. AS13335 US
104.28.63.133/32 1 Cloudflare, Inc. AS13335 US
104.28.63.134/32 1 Cloudflare, Inc. AS13335 US
104.28.63.135/32 1 Cloudflare, Inc. AS13335 US
104.28.63.136/32 1 Cloudflare, Inc. AS13335 US
104.28.63.137/32 1 Cloudflare, Inc. AS13335 US
104.28.63.138/32 1 Cloudflare, Inc. AS13335 US
104.28.63.139/32 1 Cloudflare, Inc. AS13335 US
104.28.63.140/32 1 Cloudflare, Inc. AS13335 US
104.28.63.141/32 1 Cloudflare, Inc. AS13335 US
104.28.63.142/32 1 Cloudflare, Inc. AS13335 US
104.28.63.159/32 1 Cloudflare, Inc. AS13335 US

All 32 IP addresses in 104.28.63.128/27

Not announced as an exact prefix — covered by the announced supernet 104.28.63.0/24.

Announced prefix
Origin AS
Announcement samples
5,937
Last seen
2026-07-27 06:45:00

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 104.28.63.128/27?

104.28.63.128/27 is a CIDR network block containing 32 IPv4 addresses (from 104.28.63.128 to 104.28.63.159). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 104.28.63.128/27 network?

The 104.28.63.128/27 range is allocated to Cloudflare, Inc. and announced via AS13335 from Brazil.

How many IP addresses are in 104.28.63.128/27?

104.28.63.128/27 contains exactly 32 usable IPv4 addresses. A /27 prefix length means 32 addresses are covered by this single routing entry.

Last updated: 2026-07-27 07:10:31 UTC
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