Data as of Nov 12, 2026
138.91.0.0/16
1 residential-proxy exit · 30 daysMicrosoft Corporation · space held by Microsoft Corp
Residential-proxy exits
Proxy exits
1
<0.01% of its addresses · 30 days
Oct 13, 2026 – Nov 11, 2026
Exits seen per day
14 observations
Network & registry
Origin network
AS8075
US
- Name
- Microsoft Corporation
- Type
- Hosting
- Registered
- Mar 31, 1997
- Domain
- microsoft.com
- Website
- www.microsoft.com
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Aug 2012
- Current origin since
- Aug 2012 · 14 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 138.
91. 0. 0/ 16 - Netname
- MICROSOFT
- Registrant
- Microsoft Corp
- Organization
- Microsoft Corp (MSFT-Z)
- Org address
- One Microsoft Way, Redmond, WA, 98052
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-138-91-0-0-1
- Parent
- NET-138-0-0-0-0
- Created
- Jun 22, 2011
- RIR
- ARIN
- Country
- US
- Delegated
- Jun 22, 2011
- Status
- assigned
Report abuse
Abuse contact
- abuse@
microsoft. com - Name
- Microsoft Abuse Contact
- Phone
- +1-425-882-8080
- Handle
- MAC74-ARIN