121.250.136.0/24 - BGP Prefix (MOAS)
IPv4APNICannouncedMOASNo ROA
CIDR
121.250.136.0/24
IP Version
IPv4
Addresses
256
Mask
/24 (255.255.255.0)
Country
🇨🇳 China
City
Nanjing
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
2 of 2 routesMOAS - 2 origin ASNs
RPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.250.136.0/24 | AS4538 ERX-CERNET-BKB - China Education and Research Network Center | No ROA | - | 2026-10-12 |
| 121.250.136.0/24 | AS141005 SDEPN-AS-CN - Shandong Provincial Department of Education, | No ROA | - | 2026-10-12 |
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.248.0.0/14 | AS4538 ERX-CERNET-BKB - China Education and Research Network Center | No ROA | - | 2026-10-12 |
| 121.250.0.0/15 | AS4538 ERX-CERNET-BKB - China Education and Research Network Center | No ROA | - | 2026-10-12 |
| 121.250.128.0/20 | AS4538 ERX-CERNET-BKB - China Education and Research Network Center | No ROA | - | 2026-10-12 |
| 121.250.128.0/20 | AS141005 SDEPN-AS-CN - Shandong Provincial Department of Education, | No ROA | - | 2026-10-12 |
Origin ASNs (2)
AS4538MOAS
ERX-CERNET-BKB - China Education and Research Network Center
AS141005MOAS
SDEPN-AS-CN - Shandong Provincial Department of Education,
Related Prefixes
Geolocation
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 APNIC regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/121.250.136.0/24Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.250.136.0/24" | jq
External Links