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CIDR Range

122.251.0.0/17

Addresses
32,768
32.8K
Sub-ranges
6+
within this block
PTR Density
100.0%
32.8K of 32.8K 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.

81/100
Trusted
How this score is built

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

Ranges inside 122.251.0.0/17

First and last addresses in 122.251.0.0/17

122.251.0.0/17 runs from 122.251.0.0 to 122.251.127.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 122.250.0.0/15.

Announced prefix
Origin AS
Announcement samples
18,616
Last seen
2026-11-15 00:07:03

Frequently Asked Questions

What is 122.251.0.0/17?

122.251.0.0/17 is a CIDR network block containing 32,768 IPv4 addresses (from 122.251.0.0 to 122.251.127.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 122.251.0.0/17 network?

The 122.251.0.0/17 range is allocated to Yamaguchi Cable Vision Co.,Ltd and announced via AS18077 from Japan.

Last updated: 2026-11-15 00:54:05 UTC
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