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CIDR Range

210.144.0.0/12

1.05M IPs /12 Japan APNIC
Addresses
1,048,576
1.05M
Sub-ranges
50+
within this block
PTR Density
37.5%
392.7K of 1.05M 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.

76/100
Moderate
How this score is built

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

Ranges inside 210.144.0.0/12

CIDRIPsOrganizationASNCountry
210.144.0.0/16 65.5K NTT DATA CORPORATION AS4673 JP
210.153.0.0/16 65.5K NTT PC Communications, Inc. AS2514 JP
210.153.0.0/16 65.5K NTT PC Communications, Inc. AS2514 JP
210.152.0.0/16 65.5K IDC Frontier Inc. AS4694 JP
210.149.0.0/16 65.5K Internet Initiative Japan Inc. AS2497 JP
210.147.0.0/16 65.5K BIGLOBE Inc. AS2518 JP
210.150.0.0/16 65.5K NTT PC Communications, Inc. AS2514 JP
210.150.0.0/16 65.5K NTT PC Communications, Inc. AS2514 JP
210.152.0.0/16 65.5K IDC Frontier Inc. AS4694 JP
210.149.0.0/16 65.5K Internet Initiative Japan Inc. AS2497 JP
210.144.0.0/16 65.5K — — JP
210.144.0.0/16 65.5K NTT DATA CORPORATION AS4673 JP
210.154.0.0/16 65.5K NTT DOCOMO BUSINESS, Inc. AS4713 JP
210.154.0.0/16 65.5K NTT DOCOMO BUSINESS, Inc. AS4713 JP
210.145.0.0/16 65.5K NTT DOCOMO BUSINESS, Inc. AS4713 JP
210.145.0.0/16 65.5K NTT DOCOMO BUSINESS, Inc. AS4713 JP
210.147.0.0/17 32.8K BIGLOBE Inc. AS2518 JP
210.155.0.0/17 32.8K KDDI CORPORATION AS2516 JP
210.159.0.0/17 32.8K — — JP
210.155.0.0/17 32.8K KDDI CORPORATION AS2516 JP
210.146.128.0/17 32.8K ARTERIA Networks Corporation AS2519 JP
210.152.128.0/17 32.8K — — JP
210.148.0.0/17 32.8K Internet Initiative Japan Inc. AS2497 JP
210.148.0.0/17 32.8K Internet Initiative Japan Inc. AS2497 JP
210.151.128.0/17 32.8K BIGLOBE Inc. AS2518 JP
210.146.128.0/17 32.8K ARTERIA Networks Corporation AS2519 JP
210.151.128.0/17 32.8K BIGLOBE Inc. AS2518 JP
210.146.0.0/18 16.4K SoftBank Corp. AS4725 JP
210.154.192.0/18 16.4K — — JP
210.155.0.0/18 16.4K — — JP
210.157.128.0/18 16.4K — — JP
210.158.64.0/18 16.4K — — JP

First and last addresses in 210.144.0.0/12

210.144.0.0/12 runs from 210.144.0.0 to 210.159.255.255.

First 16
Last 16

RIR Ownership History

Atom feed ⇲

Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours.

Date Event From To
2026-05-10 New Allocation — JP

Frequently Asked Questions

What is 210.144.0.0/12?

210.144.0.0/12 is a CIDR network block containing 1,048,576 IPv4 addresses (from 210.144.0.0 to 210.159.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 210.144.0.0/12 network?

The 210.144.0.0/12 range is allocated to an unknown organization from Japan.

Last updated: 2026-11-13 08:09:05 UTC
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