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Data as of Nov 9, 2026

38.51.236.0/23

No anonymizer space · no proxy exits in 30 days

Colnetwork C.A. · space held by Cogent Communications, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS271907
Type
Unknown
Recent change
New origin Jun 2026
its first announcement on record

Announcements

Less specific

Covering announcements

PrefixOriginTypeLeased fromProxy exitsHolderRPKI
38.0.0.0/8AS174Internet providerIP broker Rackdog (part)401,849
78,907 always on
Cogent Communications, LLC
More specific

Announcements inside

PrefixOriginTypeHolderRPKI
38.51.236.0/24AS174UnknownCogent Communications, LLC
38.51.237.0/24AS174UnknownCogent Communications, LLC

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.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
38.0.0.0/816,777,216COGENT-ACogent Communications, LLC (COGC) · USDirect AllocationApr 16, 1991abuse@cogentco.com
└ 38.51.236.0/221,024COLNETWORK-CGNT-NET-1Colnetwork C.A. (C08773767) · VEReassignedJul 26, 2022abuse@cogentco.com
via COGENT-A

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
Cogent Communications, LLC
Handle
COGC
Range
38.0.0.0/8
Registration type
Direct Allocation
Record created
Apr 16, 1991
Legacy
yes
Origin network

AS271907

VE
Name
Colnetwork C.A.
Type
Internet provider
Registered
Apr 28, 2021
Domain
col-network.com
Website
col-network.com/
Spamhaus ASN-DROP
not listed