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Data as of Nov 4, 2026

204.253.48.0/24

No anonymizer space · no proxy exits in 30 days

COSTAR GROUP Inc. · space held by Verizon Business

Announcement
this exact prefix
No RPKI
Announced by
AS11160
Type
Business
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
204.252.0.0/14
since May 2005
AS701Internet provider344
158 always on
Verizon Business

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
204.252.0.0/14262,144UUNETCBLK252Verizon Business (MCICS) · USDirect AllocationFeb 1, 1995abuse@verizon.com
└ 204.253.48.0/24256UU-204-253-48-D6Costar Realty (C02968464) · USReassignedApr 30, 2012abuse@verizon.com
via UUNETCBLK252

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
Verizon Business
Handle
MCICS
Range
204.252.0.0/14
Registration type
Direct Allocation
Record created
Feb 1, 1995
Legacy
yes
Origin network

AS11160

US
Name
COSTAR GROUP Inc.
Type
Business
Registered
May 1, 1998
Domain
costargroup.com
Industry
Personal Care and Lifestyle (Barber Shops, Nail Salons, Diet Centers, Laundry, etc)
Spamhaus ASN-DROP
not listed