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CIDR Range

173.196.221.0/28

Addresses
16
16
Sub-ranges
0+
within this block
PTR Density
93.8%
15 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.

81/100
Trusted
How this score is built

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

Geolocation

All 16 IP addresses in 173.196.221.0/28

Not announced as an exact prefix — covered by the announced supernet 173.196.0.0/15.

Announced prefix
Origin AS
Announcement samples
20,492
Last seen
2026-11-12 19:52:52

Frequently Asked Questions

What is 173.196.221.0/28?

173.196.221.0/28 is a CIDR network block containing 16 IPv4 addresses (from 173.196.221.0 to 173.196.221.15). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 173.196.221.0/28 network?

The 173.196.221.0/28 range is allocated to Charter Communications, Inc and announced via AS20001 from United States.

How many IP addresses are in 173.196.221.0/28?

173.196.221.0/28 contains exactly 16 usable IPv4 addresses. A /28 prefix length means 16 addresses are covered by this single routing entry.

Last updated: 2026-11-12 19:54:06 UTC
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