1.51.152.0/21
🇨🇳IPv4APNICannouncedMOASNo ROA
CIDR
1.51.152.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Nanjing
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
2 of 2 routesMOAS - 2 origin ASNs
RPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 1.51.152.0/21 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
| 1.51.152.0/21 | AS141005SDEPN-AS-CN - Shandong Provincial Department of Education, | No ROA | — | 5/31/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 1.51.0.0/16 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
| 1.51.144.0/20 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
| 1.51.144.0/20 | AS141005SDEPN-AS-CN - Shandong Provincial Department of Education, | No ROA | — | 5/31/2026 |
Origin ASNs (2)
AS4538MOAS
ERX-CERNET-BKB - China Education and Research Network Center
AS141005MOAS
SDEPN-AS-CN - Shandong Provincial Department of Education,
Geolocation
API
Open https://api.ipctl.io/v1/prefix/1.51.152.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/1.51.152.0/21" | jq
External Links