209.161.128.0/19
πΊπΈCIDR
209.161.128.0/19
IP Version
IPv4
Addresses
8.1K
Mask
/19 (255.255.224.0)
Country
πΊπΈ United States
City
Great Falls
RIR
ARIN
Status
allocated
Allocated
11/11/1997
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 209.161.128.0/19 | AS4043MIC-ASN - Montana Internet Corporation | No ROA | ARIN | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS4043 | ARIN | MNT-MIC-Z | 8/22/2025 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/209.161.128.0/19Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/209.161.128.0/19" | jq
External Links