66.243.128.0/18
🇺🇸CIDR
66.243.128.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇺🇸 United States
City
Schaumburg
RIR
ARIN
Status
allocated
Allocated
3/4/2002
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 66.243.128.0/18 | AS3356LEVEL3 - Level 3 Parent, LLC | No ROA | — | 6/1/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 66.243.139.0/24 | AS22362GLOBALTELLINK-HNSS - Global Tel*link Corporation | No ROA | — | 6/1/2026 |
Origin ASN
AS3356
LEVEL3 - Level 3 Parent, LLC
Geolocation
API
Open https://api.ipctl.io/v1/prefix/66.243.128.0/18Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/66.243.128.0/18" | jq
External Links