137.66.22.0/23
🇺🇸CIDR
137.66.22.0/23
IP Version
IPv4
Addresses
512
Mask
/23 (255.255.254.0)
Country
🇺🇸 United States
City
San Francisco (Castro District)
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 137.66.22.0/23 | AS40509FLY - Fly.io, Inc. | Valid | ARINRADB | 6/1/2026 |
Origin ASN
AS40509
FLY - Fly.io, Inc.
Geolocation
Country🇺🇸United StatesUS
RegionCalifornia
CitySan Francisco (Castro District)
Coordinates37.7648, -122.4320 ↗
API
Open https://api.ipctl.io/v1/prefix/137.66.22.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/137.66.22.0/23" | jq
External Links