72.5.120.0/21 - (AS19745)
CIDR
72.5.120.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇺🇸 United States
City
San Francisco (South of Market)
RIR
ARIN
Status
allocated
Allocated
2026-09-24
Transfer History
Registry transfers of 72.5.120.0/21, blocks inside it, or blocks containing it.
- 72.5.120.0/21Transfer ·
- 72.5.120.0/21M&A ·
- 72.5.0.0/17M&A ·
- 72.5.0.0/16M&A ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 72.5.120.0/21 | Transfer | |||
| 72.5.120.0/21 | M&A | |||
| 72.5.0.0/17 | M&A | |||
| 72.5.0.0/16 | M&A |
Origin ASN
AS19745
Related Prefixes
More prefixes of AS19745
All prefixes of AS19745 →Geolocation
Country🇺🇸United StatesUS
RegionCalifornia
CitySan Francisco (South of Market)
Coordinates37.7895, -122.3980 ↗
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/72.5.120.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/72.5.120.0/21" | jq
External Links