209.135.128.0/23
🇺🇸CIDR
209.135.128.0/23
IP Version
IPv4
Addresses
512
Mask
/23 (255.255.254.0)
Country
🇺🇸 United States
City
St Louis
RIR
ARIN
Status
allocated
Allocated
9/5/1997
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 209.135.128.0/24 | AS6428CDM - CDM | No ROA | — | 6/1/2026 |
Origin ASN
AS13962
Geolocation
API
Open https://api.ipctl.io/v1/prefix/209.135.128.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/209.135.128.0/23" | jq
External Links