Data as of Nov 4, 2026

66.151.66.0/24

No anonymizer space · no proxy exits in 30 days

Microsoft Corporation · space held by Unitas Global

Announcement

this exact prefix

No RPKI

Announced by

Type

Business

Risk

0 / 100 · Low

Announcements

Less specific

Prefix	Origin	Type	Holder	RPKI
66.151.64.0/20 since May 2005	AS13791	Internet provider	Unitas Global

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
66.151.64.0/20	4,096	PNAP-06-2001	Unitas Global (UG-210) · US	Direct Allocation	Jul 13, 2001	[email protected]
└ 66.151.66.0/24	256	INAP-HOU-NUANCE-25497	Nuance Communications, Inc. (C00800625) · US	Reassigned	Apr 12, 2004	[email protected] via PNAP-06-2001

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

IPv4 market

Origin network