138.238.0.0/16
🇺🇸CIDR
138.238.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Washington D.C. (Northwest Washington)
RIR
ARIN
Status
allocated
Allocated
6/7/1990
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
15 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 138.238.128.0/18 | AS919AS919 - The Howard University | No ROA | — | 5/31/2026 |
| 138.238.64.0/18 | AS919AS919 - The Howard University | No ROA | — | 5/31/2026 |
| 138.238.32.0/19 | AS919AS919 - The Howard University | No ROA | — | 5/31/2026 |
| 138.238.192.0/20 | AS919AS919 - The Howard University | No ROA | — | 5/31/2026 |
| 138.238.16.0/20 | AS919AS919 - The Howard University | No ROA | — | 5/31/2026 |
| 138.238.224.0/20 | AS919AS919 - The Howard University | No ROA | — | 5/31/2026 |
| 138.238.216.0/21 | AS919AS919 - The Howard University | No ROA | — | 5/31/2026 |
| 138.238.240.0/21 | AS919AS919 - The Howard University | No ROA | — | 5/31/2026 |
| 138.238.255.0/24 | AS6079RCN-AS - RCN | No ROA | — | 5/31/2026 |
| 138.238.4.0/24 | AS6079RCN-AS - RCN | No ROA | — | 5/31/2026 |
| 138.238.209.0/24 | AS6079RCN-AS - RCN | No ROA | — | 5/31/2026 |
| 138.238.210.0/24 | AS6079RCN-AS - RCN | No ROA | — | 5/31/2026 |
| 138.238.3.0/24 | AS6079RCN-AS - RCN | No ROA | — | 5/31/2026 |
| 138.238.254.0/24 | AS6079RCN-AS - RCN | No ROA | — | 5/31/2026 |
| 138.238.11.0/24 | AS395436HUH-ASN-01 - Howard University Hospital | No ROA | — | 5/31/2026 |
Origin ASN
AS919
AS919 - The Howard University
Geolocation
Country🇺🇸United StatesUS
RegionDistrict of Columbia
CityWashington D.C. (Northwest Washington)
Coordinates38.9206, -77.0217 ↗
API
Open https://api.ipctl.io/v1/prefix/138.238.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/138.238.0.0/16" | jq
External Links