// ASN

AS3598

MICROSOFT-CORP-AS - Microsoft Corporation, US

Detailed information about the Autonomous System. Need another one? Look up a different ASN.

ASN: AS3598
Organization: Microsoft Corporation
Description: MICROSOFT-CORP-AS - Microsoft Corporation, US
Country: US
State / Region: WA
City: Redmond
Address: One Microsoft Way
Registry (RIR): ARIN
Created: 2007-03-21
Updated: 2025-06-10
IPv4 Prefixes: 21
IPv6 Prefixes: 5

IPv4 Prefixes

21 total · showing first 10

131.107.0.0/16
157.54.0.0/16
157.57.0.0/16
157.58.0.0/16
157.58.192.0/19
157.58.31.0/24
157.59.0.0/16
157.60.0.0/16
167.220.0.0/16
167.220.0.0/17

IPv6 Prefixes

5 total

2001:4898::/32
2404:f801::/32
2a01:110:8020::/48
2a01:110:8068::/48
2a01:110::/32

What is AS3598?

AS3598 is an Autonomous System Number (ASN) assigned to Microsoft Corporation. An ASN identifies a network or group of IP prefixes operated under a common routing policy in the BGP protocol.

Looking for more ASN data?

Use our ASN Lookup Tool for real-time WHOIS queries, or explore our API documentation to integrate ASN data into your applications.

ASN Lookup Tool →