165.112.136.0/21
🇺🇸CIDR
165.112.136.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇺🇸 United States
City
Bethesda
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 165.112.136.0/21 | AS3527NIH-NET - National Institutes of Health | Valid | RADB | 5/31/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 165.112.0.0/16 | AS3527NIH-NET - National Institutes of Health | Valid | — | 5/31/2026 |
| 165.112.140.0/24 | AS393689NLM-NCCS - National Library of Medicine | Valid | — | 5/31/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/165.112.136.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/165.112.136.0/21" | jq
External Links