Data as of Nov 10, 2026

72.252.4.0/22

No anonymizer space · no proxy exits in 30 days

Columbus Networks USA, Inc.

Announcement

this exact prefix

No RPKI

Announced by

AS23520

Type

Internet provider

75% of it

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Proxy exits	Holder	RPKI
72.252.0.0/16 since Apr 2006	AS23520	Residential	7,058 1,719 always on	Columbus Networks USA, Inc.

More specific

Announcements inside

Prefix	Origin	Type	Holder	RPKI
72.252.4.0/24 since Oct 2018	AS396899	Residential	Columbus Networks USA, Inc.

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
72.252.0.0/16	65,536	COLUMBUS-NETWORKS-3	Columbus Networks USA, Inc. (CNU-6) · US	Direct Allocation	Jan 19, 2005	rafael.espinosa@libertynet.com
└ 72.252.4.0/24	256	CN-BLOCK-72-252-4	Natural G.C. Inc. (NG-240) · PR	Reassigned	Dec 3, 2018	—

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

1,024 addresses

Type	Addresses	Share	Ranges
Internet provider	768	75%	1
Residential	256	25%	1

Network & registry

Announcement Routing history Whois & abuse

Routing timeline

Covering aggregate above, the prefix's own history below

Summary

Routing history

Pattern: Stable
First seen: Sep 2010
Current origin since: Sep 2010 · 16 yr
Origin networks: 1