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CIDR Range

100.4.0.0/14

262.1K IPs /14 United States ARIN
Addresses
262,144
262.1K
Sub-ranges
50+
within this block
PTR Density
54.7%
143.3K of 262.1K 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 100.4.0.0/14

First and last addresses in 100.4.0.0/14

100.4.0.0/14 runs from 100.4.0.0 to 100.7.255.255.

First 16
Last 16

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 100.4.0.0/14?

100.4.0.0/14 is a CIDR network block containing 262,144 IPv4 addresses (from 100.4.0.0 to 100.7.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 100.4.0.0/14 network?

The 100.4.0.0/14 range is allocated to an unknown organization from United States.

Last updated: 2026-10-28 03:54:06 UTC
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