40.66.128.0/17 - Microsoft Corporation (AS8075)
CIDR
40.66.128.0/17
IP Version
IPv4
Addresses
32.7K
Mask
/17 (255.255.128.0)
Country
🇺🇸 United States
City
New York
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 40.66.128.0/17 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | No ROA | - | 2026-10-11 |
Transfer History
Registry transfers of 40.66.128.0/17, blocks inside it, or blocks containing it.
- 40.64.0.0/10Transfer ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 40.64.0.0/10 | Transfer |
Related Prefixes
More prefixes of AS8075
All prefixes of AS8075 →Geolocation
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the ARIN regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/40.66.128.0/17Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/40.66.128.0/17" | jq
External Links