Data as of Nov 10, 2026
Autonomous system

AS17144

Microsoft Corporation

Announces 1,024 addresses in 4 prefixes. None of it is anonymizer space.

Type
Business
US

Announced prefixes

Arrived
PrefixTypeHolderRPKI
66.151.66.0/24
since May 2005
BusinessUnitas Global
67.208.167.0/24
since Oct 2013
BusinessZayo Bandwidth
74.123.179.0/24
since Mar 2021
Business
192.135.86.0/24
since Oct 2013
Business

Network & history

Routing patterns

How its announcements have moved

Arrivals

Year each prefix's current origin began announcing it