Data as of Nov 10, 2026
172.187.0.0/16
1 anonymizer address · <0.01% · Datacenter proxyMicrosoft Corporation · space held by Microsoft Limited
IPv4 market
Path
2 · Leased from
not leased
4 · Use
Hosting
anonymizer space, operator not named
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@ |
| └ 172.187.0.0/16 | 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.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
65,536 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Hosting | 65,535 | >99% | 2 | |
| Datacenter proxyanonymizer | 1 | <0.01% | 1 |
Network & registry
Announced by
Covering announcement 172.160.0.0/11
- Prefix
- 172.160.0.0/11
- Announced by
- AS8075 Microsoft Corporation
- Type
- Hosting
- Anonymizer addresses
- 2 addresses · <0.01%Datacenter proxyVPN
- Operator
- VPN servicesoperated by VPN Gate
- 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