173.37.0.0/20
🇺🇸CIDR
173.37.0.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇺🇸 United States
City
Dallas
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 173.37.0.0/20 | AS109CISCOSYSTEMS - CISCO SYSTEMS, INC. | Valid | ARIN | 5/31/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 173.36.0.0/14 | AS109CISCOSYSTEMS - CISCO SYSTEMS, INC. | Valid | — | 5/31/2026 |
Origin ASN
AS109
CISCOSYSTEMS - CISCO SYSTEMS, INC.
Geolocation
API
Open https://api.ipctl.io/v1/prefix/173.37.0.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/173.37.0.0/20" | jq
External Links