143.111.0.0/16
🇺🇸CIDR
143.111.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Houston (South Central Houston)
RIR
ARIN
Status
allocated
Allocated
3/26/1990
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 143.111.0.0/16 | AS11773UTMDACC - The University Of Texas M.D. Anderson Cancer Center | No ROA | RADB | 5/31/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 143.111.5.0/24 | AS11773UTMDACC - The University Of Texas M.D. Anderson Cancer Center | No ROA | — | 5/31/2026 |
| 143.111.86.0/24 | AS11773UTMDACC - The University Of Texas M.D. Anderson Cancer Center | No ROA | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS11773 | RADB | MAINT-AS6922 | 11/13/2023 |
Geolocation
Country🇺🇸United StatesUS
RegionTexas
CityHouston (South Central Houston)
Coordinates29.7046, -95.4007 ↗
API
Open https://api.ipctl.io/v1/prefix/143.111.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/143.111.0.0/16" | jq
External Links