156.33.0.0/16
🇺🇸CIDR
156.33.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Washington D.C. (Northeast Washington)
RIR
ARIN
Status
allocated
Allocated
12/3/1991
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 156.33.0.0/16 | AS3495SENATE-AS - US Senate | No ROA | — | 5/31/2026 |
Covering Prefix
17 less-specific announcementsOrigin ASN
AS3495
SENATE-AS - US Senate
Geolocation
Country🇺🇸United StatesUS
RegionDistrict of Columbia
CityWashington D.C. (Northeast Washington)
Coordinates38.8982, -77.0080 ↗
API
Open https://api.ipctl.io/v1/prefix/156.33.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/156.33.0.0/16" | jq
External Links