209.135.138.0/24 - (AS402747)
CIDR
209.135.138.0/24
IP Version
IPv4
Addresses
256
Mask
/24 (255.255.255.0)
Country
🇺🇸 United States
City
St Louis
RIR
ARIN
Status
allocated
Allocated
2026-10-02
Transfer History
Registry transfers of 209.135.138.0/24, blocks inside it, or blocks containing it.
- 209.135.138.0/24Transfer ·
- 209.135.128.0/19M&A ·
Origin ASN
AS402747
Geolocation
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the ARIN regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/209.135.138.0/24Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/209.135.138.0/24" | jq
External Links