Data as of Nov 10, 2026
172.166.0.0/16
No anonymizer space · no proxy exits in 30 daysMicrosoft Corporation · space held by Microsoft Limited
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 172. | 5,767,168 | UK-MICROSOFT-20000324 | Microsoft Limited (ORG-MA42-RIPE) · GB | ALLOCATED PA | May 16, 2024 | abuse@ |
| └ 172.166.0.0/16 | 65,536 | cloud | unknown | ASSIGNED PA | Sep 5, 2025 | abuse@ via UK-MICROSOFT-20000324 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Announced by
Covering announcement 172.160.0.0/11
- Prefix
- 172.160.0.0/11
- Announced by
- AS8075 Microsoft Corporation
- Type
- Hosting
- RPKI
- RPKI valid
- Netname
- UK-MICROSOFT-20000324
- Registrant
- Microsoft Limited
- RIR
- RIPE NCC
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 172.160.0.0/11
172.160.0.0/11
Routing history
- Pattern
- Stable
- First seen
- Jul 2022
- Current origin since
- Jul 2022 · 4.3 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 172.160.0.0/11 | AS8075 | /11 | RIPE | RPKI valid |
Whois
Registration for this announcement
- Range
- 172.
128. 0. 0 - 172. 215. 255. 255 - Netname
- UK-MICROSOFT-20000324
- Registrant
- Microsoft Limited
- Registrant country
- GB
- Organization
- Microsoft Limited (ORG-MA42-RIPE)
- Org country
- GB
- Type
- ALLOCATED PA
- Created
- May 16, 2024
- Updated
- May 16, 2024
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Mar 24, 2000
- Status
- assigned
Report abuse
Abuse contact
- abuse@
microsoft. com - Name
- Microsoft Abuse Contact
- Handle
- MAC274-RIPE