40.80.0.0/12
🇬🇧CIDR
40.80.0.0/12
IP Version
IPv4
Addresses
1M
Mask
/12 (255.240.0.0)
Country
🇬🇧 United Kingdom
City
London
RIR
ARIN
Status
allocated
Allocated
2/23/2015
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 40.80.0.0/12 | AS8075MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | Valid | RADB | 6/13/2026 |
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 40.95.86.0/23 | AS8075MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | Valid | — | 6/13/2026 |
| 40.95.238.0/23 | AS8075MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | Valid | — | 6/13/2026 |
| 40.80.71.0/24 | AS8069MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | Valid | — | 6/13/2026 |
| 40.87.39.0/24 | AS8069MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | Valid | — | 6/13/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/40.80.0.0/12Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/40.80.0.0/12" | jq
External Links