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Data as of Nov 3, 2026

199.97.121.0/24

No anonymizer space · no proxy exits in 30 days

Westchester Library System · space held by Cogent Communications, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS25987
Type
Business
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
199.97.0.0/16
since Nov 2007
AS174Internet provider1Cogent 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
199.97.0.0 - 199.100.255.255262,144COGENT-199-97-98-99-100-16Cogent Communications, LLC (COGC) · USDirect AllocationDec 30, 1993[email protected]
└ 199.97.121.0/24256WESTCHESTER-CGNT-NET-1Westchester Library System (WLS-9) · USReassignedAug 6, 2026—

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
Cogent Communications, LLC
Handle
COGC
Range
199.97.0.0 - 199.100.255.255
Registration type
Direct Allocation
Record created
Dec 30, 1993
Legacy
yes
Origin network

AS25987

US
Name
Westchester Library System
Type
Business
Registered
Jun 12, 2002
Domain
westchesterlibraries.org
Spamhaus ASN-DROP
not listed