64.57.16.0/20
🇺🇸CIDR
64.57.16.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇺🇸 United States
City
Ann Arbor (King)
RIR
ARIN
Status
allocated
Allocated
10/17/2006
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 64.57.16.0/20 | AS11537INTERNET2-RESEARCH-EDU - Internet2 | Valid | RADB | 5/30/2026 |
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 64.57.20.0/23 | AS11164INTERNET2-I2PX - Internet2 | Valid | — | 5/30/2026 |
| 64.57.29.0/24 | AS11164INTERNET2-I2PX - Internet2 | Valid | — | 5/30/2026 |
| 64.57.22.0/24 | AS11537INTERNET2-RESEARCH-EDU - Internet2 | Valid | — | 5/30/2026 |
| 64.57.22.0/24 | AS396955INTERNET2-BLEND - Internet2 | Valid | — | 5/30/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/64.57.16.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/64.57.16.0/20" | jq
External Links