201.9.0.0/16 - BGP Prefix
IPv4ARINallocated
CIDR
201.9.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇧🇷 Brazil
City
São Paulo
RIR
ARIN
Status
allocated
Allocated
2026-07-29
Transfer History
Registry transfers of 201.9.0.0/16, blocks inside it, or blocks containing it.
- 201.9.0.0/16Transfer ·
- 201.9.0.0/16inter-RIRTransfer ·
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/201.9.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/201.9.0.0/16" | jq
External Links