204.147.208.0/20
🇺🇸CIDR
204.147.208.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇺🇸 United States
City
Seattle (Downtown)
RIR
ARIN
Status
allocated
Allocated
1/12/1995
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 204.147.208.0/20 | AS25845VIRGINIA-MASON - Virginia Mason Medical Center | No ROA | RADB | 6/1/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 204.147.220.0/22 | AS25845VIRGINIA-MASON - Virginia Mason Medical Center | No ROA | — | 6/1/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/204.147.208.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/204.147.208.0/20" | jq
External Links