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CIDR Range

58.138.97.0/24

Addresses
256
256
Sub-ranges
35+
within this block
PTR Density
84.8%
217 of 256 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 58.138.97.0/24

CIDRIPsOrganizationASNCountry
58.138.97.128/26 64 Internet Initiative Japan Inc. AS2497 JP
58.138.97.64/27 32 Internet Initiative Japan Inc. AS2497 JP
58.138.97.192/27 32 Internet Initiative Japan Inc. AS2497 JP
58.138.97.240/28 16 Internet Initiative Japan Inc. AS2497 JP
58.138.97.112/28 16 Internet Initiative Japan Inc. AS2497 JP
58.138.97.40/29 8 Internet Initiative Japan Inc. AS2497 JP
58.138.97.232/29 8 Internet Initiative Japan Inc. AS2497 JP
58.138.97.96/29 8 Internet Initiative Japan Inc. AS2497 JP
58.138.97.24/29 8 Internet Initiative Japan Inc. AS2497 JP
58.138.97.60/30 4 Internet Initiative Japan Inc. AS2497 JP
58.138.97.104/30 4 Internet Initiative Japan Inc. AS2497 JP
58.138.97.108/30 4 Internet Initiative Japan Inc. AS2497 US
58.138.97.228/30 4 Internet Initiative Japan Inc. AS2497 JP
58.138.97.0/30 4 Internet Initiative Japan Inc. AS2497 JP
58.138.97.12/30 4 Internet Initiative Japan Inc. AS2497 US
58.138.97.20/30 4 Internet Initiative Japan Inc. AS2497 US
58.138.97.32/30 4 Internet Initiative Japan Inc. AS2497 JP
58.138.97.36/30 4 Internet Initiative Japan Inc. AS2497 GB
58.138.97.16/30 4 Internet Initiative Japan Inc. AS2497 JP
58.138.97.48/30 4 Internet Initiative Japan Inc. AS2497 JP
58.138.97.8/31 2 Internet Initiative Japan Inc. AS2497 US
58.138.97.6/31 2 Internet Initiative Japan Inc. AS2497 US
58.138.97.4/31 2 Internet Initiative Japan Inc. AS2497 JP
58.138.97.52/31 2 Internet Initiative Japan Inc. AS2497 JP
58.138.97.58/31 2 Internet Initiative Japan Inc. AS2497 JP
58.138.97.54/32 1 Internet Initiative Japan Inc. AS2497 JP
58.138.97.55/32 1 Internet Initiative Japan Inc. AS2497 GB
58.138.97.227/32 1 Internet Initiative Japan Inc. AS2497 JP
58.138.97.226/32 1 Internet Initiative Japan Inc. AS2497 SG
58.138.97.225/32 1 Internet Initiative Japan Inc. AS2497 SG
58.138.97.224/32 1 Internet Initiative Japan Inc. AS2497 JP
58.138.97.57/32 1 Internet Initiative Japan Inc. AS2497 JP

Geolocation

First and last addresses in 58.138.97.0/24

58.138.97.0/24 runs from 58.138.97.0 to 58.138.97.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 58.138.0.0/17.

Announced prefix
Origin AS
Announcement samples
13,791
Last seen
2026-11-12 06:29:12

Frequently Asked Questions

What is 58.138.97.0/24?

58.138.97.0/24 is a CIDR network block containing 256 IPv4 addresses (from 58.138.97.0 to 58.138.97.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 58.138.97.0/24 network?

The 58.138.97.0/24 range is allocated to Internet Initiative Japan Inc. and announced via AS2497 from Japan.

How many IP addresses are in 58.138.97.0/24?

58.138.97.0/24 contains exactly 256 usable IPv4 addresses. A /24 prefix length means 256 addresses are covered by this single routing entry.

Last updated: 2026-11-12 06:54:05 UTC
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