128.137.0.0/16
🇺🇸CIDR
128.137.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
South San Francisco (The East Side)
RIR
ARIN
Status
allocated
Allocated
7/8/1986
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 128.137.0.0/16 | AS2047ASN-ROCHE-BASLE Hoffmann - La Roche Ltd. | No ROA | ARIN | 6/1/2026 |
Geolocation
Country🇺🇸United StatesUS
RegionCalifornia
CitySouth San Francisco (The East Side)
Coordinates37.6566, -122.3780 ↗
API
Open https://api.ipctl.io/v1/prefix/128.137.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/128.137.0.0/16" | jq
External Links