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Data as of Nov 8, 2026

63.164.208.0/21

256 anonymizer addresses · 13% · ISP proxy

Cogent Communications, LLC

Announcement
63.164.208.0/20
No RPKI
Announced by
AS174
Type
Hosting
88% of it
IPv4 market

Path

1 · Holder
Cogent Communications, LLC
record created Dec 3, 1999
2 · Leased from
not leased
3 · Announced by
AS174 Cogent Communications, LLC
since Feb 2026 · 8 mo ago
4 · Use
Hosting
anonymizer space, operator not named

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
63.160.0.0/12AS174Internet provider183
37 always on
Cogent Communications, LLC

Composition

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

Announced space

Address share

Announced space

Types across the prefix

2,048 addresses
TypeAddressesShareRanges
Hosting1,79288%2
ISP proxyanonymizer25613%1

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Announced by

Covering announcement 63.164.208.0/20

Prefix
63.164.208.0/20
Announced by
AS174 Cogent Communications, LLC
Type
Hosting
Anonymizer addresses
512 addresses · 13%ISP proxy
RPKI
No RPKI
Netname
COGENT-63-160-0
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