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CIDR Range

172.244.16.0/20

Addresses
4,096
4.1K
Sub-ranges
0+
within this block
PTR Density
33.0%
1.4K of 4.1K 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.

78/100
Moderate
How this score is built

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

Geolocation

First and last addresses in 172.244.16.0/20

172.244.16.0/20 runs from 172.244.16.0 to 172.244.31.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 172.244.0.0/16.

Announced prefix
Origin AS
Announcement samples
45,217
Last seen
2026-11-13 04:20:59

Frequently Asked Questions

What is 172.244.16.0/20?

172.244.16.0/20 is a CIDR network block containing 4,096 IPv4 addresses (from 172.244.16.0 to 172.244.31.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 172.244.16.0/20 network?

The 172.244.16.0/20 range is allocated to Comcast Cable Communications, LLC and announced via AS7922 from United States.

Last updated: 2026-11-13 05:39:05 UTC
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