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CIDR Range

12.3.63.0/26

Addresses
64
64
Sub-ranges
2+
within this block
PTR Density
0.0%
0 of 64 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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 12.3.63.0/26

Geolocation

All 64 IP addresses in 12.3.63.0/26

Not announced as an exact prefix — covered by the announced supernet 12.0.0.0/9.

Announced prefix
Origin AS
Announcement samples
3,807
Last seen
2026-07-19 23:07:47

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 12.3.63.0/26?

12.3.63.0/26 is a CIDR network block containing 64 IPv4 addresses (from 12.3.63.0 to 12.3.63.63). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 12.3.63.0/26 network?

The 12.3.63.0/26 range is allocated to AT&T Enterprises, LLC and announced via AS7018 from United States.

How many IP addresses are in 12.3.63.0/26?

12.3.63.0/26 contains exactly 64 usable IPv4 addresses. A /26 prefix length means 64 addresses are covered by this single routing entry.

Last updated: 2026-07-19 23:10:35 UTC
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