58.199.136.0/21
🇨🇳CIDR
58.199.136.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Pengpu (Baoshan Qu)
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 58.199.136.0/21 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 58.192.0.0/12 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
| 58.198.0.0/15 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
| 58.199.128.0/18 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
| 58.199.128.0/18 | AS24366CNGI-SH-IX3-AS-AP - CERNET2 IX at Tongji University | No ROA | — | 5/31/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/58.199.136.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/58.199.136.0/21" | jq
External Links