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Data as of Nov 7, 2026

204.251.252.0/22

No anonymizer space · no proxy exits in 30 days

Cogent Communications, LLC

Announcement
204.248.0.0/14
No RPKI
Announced by
AS174
Type
Internet provider
75% of it

Announcements

More specific

Announcements inside

PrefixOriginTypeHolderRPKI
204.251.255.0/24
since Oct 2009
AS46853ResidentialCogent Communications, LLC
via Sidlinger Computer Corporation

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
204.248.0.0/14262,144COGENT-204-248-0Cogent Communications, LLC (COGC) · USDirect AllocationFeb 1, 1995abuse@cogentco.com
└ 204.251.252.0/221,024SPRINT-CCFBFFSidlinger Computer Corporation (SCC) · USReallocatedApr 24, 1995sidlinger@gmail.com
└ 204.251.252.0/221,024SIDLINGER-SWTEXAS-252-255Southwest Texas Telephone Company (C02201320) · USReassignedApr 7, 2009sidlinger@gmail.com
via SPRINT-CCFBFF

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

Composition

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

Announced space

Address share

Announced space

Types across the prefix

1,024 addresses
TypeAddressesShareRanges
Internet provider76875%1
Residential25625%1

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Announced by

Covering announcement 204.248.0.0/14

Prefix
204.248.0.0/14
Announced by
AS174 Cogent Communications, LLC
Type
Internet provider
Proxy exits
52
Always-on exits
12
RPKI
No RPKI
Netname
COGENT-204-248-0
Registrant
Cogent Communications, LLC
RIR
ARIN
Origin network

AS174

US
Name
Cogent Communications, LLC
Type
Internet provider
Registered
May 16, 1996
Domain
cogentco.com
Website
www.cogentco.com/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed
VPN servers
1,658