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CIDR Range

61.58.72.0/21

2.0K IPs /21 TBC AS131596 Taiwan APNIC
Addresses
2,048
2.0K
Sub-ranges
0+
within this block
PTR Density
99.6%
2.0K of 2.0K 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.

80/100
Trusted
How this score is built

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

Geolocation

First and last addresses in 61.58.72.0/21

61.58.72.0/21 runs from 61.58.72.0 to 61.58.79.255.

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 — TW

Frequently Asked Questions

What is 61.58.72.0/21?

61.58.72.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 61.58.72.0 to 61.58.79.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 61.58.72.0/21 network?

The 61.58.72.0/21 range is allocated to TBC and announced via AS131596 from Taiwan.

Last updated: 2026-11-02 21:09:05 UTC
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