Data as of Nov 7, 2026

38.183.154.0/23

No anonymizer space · no proxy exits in 30 days

Cogent Communications, LLC

Announcement

this exact prefix

No RPKI

Announced by

Type

Business

Recent change

New origin Aug 2026

its first announcement on record

Announcements

Less specific

Prefix	Origin	Type	Leased from	Proxy exits	Holder	RPKI
38.0.0.0/8	AS174	Internet provider	IP broker Rackdog (part)	404,266 78,035 always on	Cogent Communications, LLC

More specific

Prefix	Origin	Type	Holder	RPKI
38.183.154.0/24 since Aug 2026	AS174	Business	Cogent Communications, LLC
38.183.155.0/24 since Aug 2026	AS174	Business	Cogent Communications, LLC

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
38.0.0.0/8	16,777,216	COGENT-A	Cogent Communications, LLC (COGC) · US	Direct Allocation	Apr 16, 1991	abuse@cogentco.com
└ 38.183.154.0/23	512	SINFRA-CGNT-NET-1	S-Infra Oy (C10474315) · FI	Reassigned	Nov 28, 2023	abuse@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.

IPv4 market

Origin network