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CIDR Range

166.0.16.216/31

Addresses
2
2
Sub-ranges
0+
within this block
PTR Density
0.0%
0 of 2 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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Geolocation

All 2 IP addresses in 166.0.16.216/31

Not announced as an exact prefix — covered by the announced supernet 166.0.16.0/24.

Announced prefix
Origin AS
Announcement samples
31,571
Last seen
2026-07-23 01:57:40

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 166.0.16.216/31?

166.0.16.216/31 is a CIDR network block containing 2 IPv4 addresses (from 166.0.16.216 to 166.0.16.217). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 166.0.16.216/31 network?

The 166.0.16.216/31 range is allocated to FiberState, LLC and announced via AS26042 from United States.

How many IP addresses are in 166.0.16.216/31?

166.0.16.216/31 contains exactly 2 usable IPv4 addresses. A /31 prefix length means 2 addresses are covered by this single routing entry.

Last updated: 2026-07-23 03:25:32 UTC
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