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CIDR Range

204.144.189.128/25

Addresses
128
128
Sub-ranges
0+
within this block
PTR Density
100.0%
128 of 128 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 →

Geolocation

First and last addresses in 204.144.189.128/25

204.144.189.128/25 runs from 204.144.189.128 to 204.144.189.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 204.144.188.0/22.

Announced prefix
Origin AS
Announcement samples
142,413
Last seen
2026-11-14 08:35:02

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 RIR Transfer arin apnic

Frequently Asked Questions

What is 204.144.189.128/25?

204.144.189.128/25 is a CIDR network block containing 128 IPv4 addresses (from 204.144.189.128 to 204.144.189.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 204.144.189.128/25 network?

The 204.144.189.128/25 range is allocated to Responsible Internet Sustainability Effort and announced via AS137074 from Philippines.

How many IP addresses are in 204.144.189.128/25?

204.144.189.128/25 contains exactly 128 usable IPv4 addresses. A /25 prefix length means 128 addresses are covered by this single routing entry.

Last updated: 2026-11-14 08:39:05 UTC
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