121.91.104.0/21
🇨🇳CIDR
121.91.104.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Guangzhou (Tianhe Qu)
RIR
APNIC
Status
allocated
Allocated
10/5/2007
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.91.104.0/21 | AS146842CDC-SAP-DC-SHA - ChinaDataCom Corporation Limited | Valid | APNICRADB | 5/31/2026 |
Covering Prefix
5 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.91.104.0/23 | AS146842CDC-SAP-DC-SHA - ChinaDataCom Corporation Limited | Valid | — | 5/31/2026 |
| 121.91.106.0/23 | AS146842CDC-SAP-DC-SHA - ChinaDataCom Corporation Limited | Valid | — | 5/31/2026 |
| 121.91.108.0/23 | AS146842CDC-SAP-DC-SHA - ChinaDataCom Corporation Limited | Valid | — | 5/31/2026 |
| 121.91.110.0/23 | AS146842CDC-SAP-DC-SHA - ChinaDataCom Corporation Limited | Valid | — | 5/31/2026 |
| 121.91.109.0/24 | AS146842CDC-SAP-DC-SHA - ChinaDataCom Corporation Limited | Valid | — | 5/31/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 121.91.104.0/21 | AS146842 | /21 | apnic |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 121.91.106.0/23 | AS146842 | 🇨🇳CN | assigned |
| 121.91.110.0/23 | AS146842 | 🇨🇳CN | assigned |
| 121.91.108.0/23 | AS146842 | 🇨🇳CN | assigned |
| 121.91.104.0/23 | AS146842 | 🇨🇳CN | assigned |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/121.91.104.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.91.104.0/21" | jq
External Links