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CIDR Range

104.28.166.176/28

Addresses
16
16
Sub-ranges
38+
within this block
PTR Density
0.0%
0 of 16 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 v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 104.28.166.176/28

CIDRIPsOrganizationASNCountry
104.28.166.178/31 2 Cloudflare, Inc. AS13335 US
104.28.166.188/31 2 Cloudflare, Inc. AS13335 US
104.28.166.178/31 2 Cloudflare, Inc. AS13335 US
104.28.166.186/31 2 Cloudflare, Inc. AS13335 US
104.28.166.178/31 2 Cloudflare, Inc. AS13335 US
104.28.166.188/31 2 Cloudflare, Inc. AS13335 US
104.28.166.188/31 2 Cloudflare, Inc. AS13335 US
104.28.166.190/31 2 Cloudflare, Inc. AS13335 ZA
104.28.166.190/31 2 Cloudflare, Inc. AS13335 ZA
104.28.166.186/31 2 Cloudflare, Inc. AS13335 US
104.28.166.185 1 Cloudflare, Inc. AS13335 US
104.28.166.184/32 1 Cloudflare, Inc. AS13335 DE
104.28.166.176 1 Cloudflare, Inc. AS13335 AR
104.28.166.184/32 1 Cloudflare, Inc. AS13335 US
104.28.166.185/32 1 Cloudflare, Inc. AS13335 US
104.28.166.185/32 1 Cloudflare, Inc. AS13335 US
104.28.166.186/32 1 Cloudflare, Inc. AS13335 US
104.28.166.187/32 1 Cloudflare, Inc. AS13335 US
104.28.166.190/32 1 Cloudflare, Inc. AS13335 US
104.28.166.184 1 Cloudflare, Inc. AS13335 DE
104.28.166.183/32 1 Cloudflare, Inc. AS13335 DE
104.28.166.183/32 1 Cloudflare, Inc. AS13335 US
104.28.166.176/32 1 Cloudflare, Inc. AS13335 US
104.28.166.176/32 1 Cloudflare, Inc. AS13335 AR
104.28.166.177 1 Cloudflare, Inc. AS13335 US
104.28.166.177/32 1 Cloudflare, Inc. AS13335 US
104.28.166.177/32 1 Cloudflare, Inc. AS13335 US
104.28.166.180 1 Cloudflare, Inc. AS13335 US
104.28.166.180/32 1 Cloudflare, Inc. AS13335 US
104.28.166.180/32 1 Cloudflare, Inc. AS13335 US
104.28.166.181 1 Cloudflare, Inc. AS13335 FI
104.28.166.181/32 1 Cloudflare, Inc. AS13335 US
104.28.166.181/32 1 Cloudflare, Inc. AS13335 FI
104.28.166.182 1 Cloudflare, Inc. AS13335 FI
104.28.166.182/32 1 Cloudflare, Inc. AS13335 US
104.28.166.182/32 1 Cloudflare, Inc. AS13335 FI
104.28.166.183 1 Cloudflare, Inc. AS13335 DE
104.28.166.191/32 1 Cloudflare, Inc. AS13335 US

Geolocation

All 16 IP addresses in 104.28.166.176/28

Not announced as an exact prefix — covered by the announced supernet 104.28.166.0/24.

Announced prefix
Origin AS
Announcement samples
5,912
Last seen
2026-07-26 18:47:30

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 104.28.166.176/28?

104.28.166.176/28 is a CIDR network block containing 16 IPv4 addresses (from 104.28.166.176 to 104.28.166.191). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 104.28.166.176/28 network?

The 104.28.166.176/28 range is allocated to Cloudflare, Inc. and announced via AS13335 from United States.

How many IP addresses are in 104.28.166.176/28?

104.28.166.176/28 contains exactly 16 usable IPv4 addresses. A /28 prefix length means 16 addresses are covered by this single routing entry.

Last updated: 2026-07-26 18:55:31 UTC
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