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CIDR Range

23.59.144.0/20

4.1K IPs /20 United States ARIN
Addresses
4,096
4.1K
Sub-ranges
11+
within this block
PTR Density
99.1%
4.1K 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.

76/100
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 23.59.144.0/20

First and last addresses in 23.59.144.0/20

23.59.144.0/20 runs from 23.59.144.0 to 23.59.159.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 23.32.0.0/11.

Announced prefix
Origin AS
Announcement samples
21,616
Last seen
2026-11-02 21:12:20

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 23.59.144.0/20?

23.59.144.0/20 is a CIDR network block containing 4,096 IPv4 addresses (from 23.59.144.0 to 23.59.159.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 23.59.144.0/20 network?

The 23.59.144.0/20 range is allocated to an unknown organization from United States.

Last updated: 2026-11-02 21:54:06 UTC
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