209.124.176.0/20
🇺🇸CIDR
209.124.176.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇺🇸 United States
City
Seattle (University District)
RIR
ARIN
Status
allocated
Allocated
12/21/2004
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 209.124.176.0/20 | AS101WASH-NSF-AS - University of Washington | Valid | RADB | 5/31/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 209.124.176.0/21 | AS101WASH-NSF-AS - University of Washington | Valid | — | 5/31/2026 |
| 209.124.184.0/21 | AS101WASH-NSF-AS - University of Washington | Valid | — | 5/31/2026 |
Geolocation
Country🇺🇸United StatesUS
RegionWashington
CitySeattle (University District)
Coordinates47.6615, -122.3120 ↗
API
Open https://api.ipctl.io/v1/prefix/209.124.176.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/209.124.176.0/20" | jq
External Links