Data as of Nov 11, 2026
40.34.0.0/16
No anonymizer space · no proxy exits in 30 daysMicrosoft Corporation · space held by Microsoft Limited
Announcement
this exact prefix
RPKI valid
Announced by
Type
Hosting
Risk
50 / 100 · Medium
Recently moved
Recent change
New origin May 2026
from AS4249 Eli Lilly and Company, after 2.2 years unannounced
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
- Reactivated
- First seen
- Jan 2024
- Current origin since
- May 2026 · 5 mo
- Origin networks
- 2
- Last change of origin
- May 2026
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
- Range
- 40.
33. 0. 0 - 40. 34. 255. 255 - Netname
- UK-MICROSOFT-19910423
- Registrant
- Microsoft Limited
- Registrant country
- GB
- Organization
- Microsoft Limited (ORG-MA42-RIPE)
- Org country
- GB
- Type
- ALLOCATED PA
- Created
- Jun 4, 2024
- Updated
- Jun 4, 2024
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Apr 23, 1991
- Status
- assigned
Report abuse
Abuse contact
- abuse@
microsoft. com - Name
- Microsoft Abuse Contact
- Handle
- MAC274-RIPE