143.48.0.0/16
🇺🇸CIDR
143.48.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Cold Spring Harbor
RIR
ARIN
Status
allocated
Allocated
3/26/1990
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 143.48.0.0/16 | AS13748CSHL - Cold Spring Harbor Laboratory | No ROA | RADB | 5/31/2026 |
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 143.48.0.0/17 | AS13748CSHL - Cold Spring Harbor Laboratory | No ROA | — | 5/31/2026 |
| 143.48.128.0/17 | AS13748CSHL - Cold Spring Harbor Laboratory | No ROA | — | 5/31/2026 |
| 143.48.210.0/24 | AS13748CSHL - Cold Spring Harbor Laboratory | No ROA | — | 5/31/2026 |
| 143.48.220.0/24 | AS13748CSHL - Cold Spring Harbor Laboratory | No ROA | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS13748 | RADB | MAINT-AS27506 | 9/3/2025 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/143.48.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/143.48.0.0/16" | jq
External Links