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CIDR Range

131.107.3.152/31

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.

71/100
Moderate
How this score is built

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

Geolocation

All 2 IP addresses in 131.107.3.152/31

Not announced as an exact prefix — covered by the announced supernet 131.107.0.0/16.

Announced prefix
Origin AS
Announcement samples
8,501
Last seen
2026-11-06 04:38:19

Frequently Asked Questions

What is 131.107.3.152/31?

131.107.3.152/31 is a CIDR network block containing 2 IPv4 addresses (from 131.107.3.152 to 131.107.3.153). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 131.107.3.152/31 network?

The 131.107.3.152/31 range is allocated to Microsoft Corporation and announced via AS3598 from United States.

How many IP addresses are in 131.107.3.152/31?

131.107.3.152/31 contains exactly 2 usable IPv4 addresses. A /31 prefix length means 2 addresses are covered by this single routing entry.

Last updated: 2026-11-06 05:54:06 UTC
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