Data as of Nov 3, 2026

209.4.229.0/24

No anonymizer space · no proxy exits in 30 days

ClearSky Technologies, Inc. · space held by Verizon Business

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

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
209.4.0.0/1665,536UUNET-209-4Verizon Business (MCICS) · USDirect AllocationDec 17, 1996[email protected]
└ 209.4.229.0/24256UU-209-4-229Clearsky Media (C01962666) · USReassignedJul 23, 2008[email protected]
via UUNET-209-4

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

IPv4 market

Holder

Organization
Verizon Business
Handle
MCICS
Range
209.4.0.0/16
Registration type
Direct Allocation
Record created
Dec 17, 1996
Legacy
yes
Origin network

AS11437

US
Name
ClearSky Technologies, Inc.
Type
Business
Registered
Aug 24, 1998
Domain
csky.com
Industry
Software Development
Spamhaus ASN-DROP
not listed