123.58.0.0/21
🇨🇳CIDR
123.58.0.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Beijing
RIR
APNIC
Status
assigned
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 123.58.0.0/21 | AS24138CTTNET - China TieTong Telecommunications Corporation | Invalid | — | 5/31/2026 |
Covering Prefix
5 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 123.58.0.0/19 | AS23724CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation | No ROA | — | 5/31/2026 |
| 123.58.0.0/20 | AS23724CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation | Invalid | — | 5/31/2026 |
| 123.58.0.0/20 | AS133119UNICOM-CN - China Unicom IP network | Valid | — | 5/31/2026 |
| 123.58.0.0/22 | AS9808CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd. | Invalid | — | 5/31/2026 |
| 123.58.4.0/22 | AS9808CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd. | Invalid | — | 5/31/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 123.58.0.0/20 | AS133119 | /20 | apnic |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/123.58.0.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/123.58.0.0/21" | jq
External Links