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CIDR Range

181.128.0.0/15

Addresses
131,072
131.1K
Sub-ranges
50+
within this block
PTR Density
98.8%
129.5K of 131.1K 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.

75/100
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 181.128.0.0/15

CIDRIPsOrganizationASNCountry
181.129.0.0/16 65.5K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.128.0/17 32.8K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.0.0/18 16.4K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.96.0/19 8.2K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.0.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.144.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.0.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.16.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.32.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.240.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.224.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.208.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.192.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.176.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.160.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.96.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.112.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.48.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.64.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.80.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.16.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.32.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.48.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.64.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.128.64.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.128.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.240.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.224.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.208.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.192.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.176.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO
181.129.160.0/20 4.1K UNE EPM TELECOMUNICACIONES S.A. AS13489 CO

First and last addresses in 181.128.0.0/15

181.128.0.0/15 runs from 181.128.0.0 to 181.129.255.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 181.128.0.0/12.

Announced prefix
Origin AS
Announcement samples
40,293
Last seen
2026-11-13 21:46:12

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 — CO

Frequently Asked Questions

What is 181.128.0.0/15?

181.128.0.0/15 is a CIDR network block containing 131,072 IPv4 addresses (from 181.128.0.0 to 181.129.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 181.128.0.0/15 network?

The 181.128.0.0/15 range is allocated to UNE EPM TELECOMUNICACIONES S.A. and announced via AS13489 from Colombia.

Last updated: 2026-11-13 23:39:05 UTC
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