199.221.128.0/21
🇺🇸CIDR
199.221.128.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇺🇸 United States
City
Boulder (Mapleton Hill)
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 199.221.128.0/21 | AS3364CSDCO-AS - Computer Systems Design Company | No ROA | RADB | 5/31/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 199.221.0.0/16 | AS701UUNET - Verizon Business | No ROA | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS3364 | RADB | MAINT-AS1828 | 11/13/2023 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/199.221.128.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/199.221.128.0/21" | jq
External Links