222.28.16.0/21
🇨🇳IPv4APNICannouncedMOASNo ROA
CIDR
222.28.16.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Chaowai (Chaoyang)
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
2 of 2 routesMOAS - 2 origin ASNs
RPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 222.28.16.0/21 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | RADB | 5/31/2026 |
| 222.28.16.0/21 | AS24350CNGI-BJ-IX4-AS-AP - CERNET2 IX at Beijing University of Posts and Telecommunications | No ROA | — | 5/31/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 222.16.0.0/12 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
| 222.24.0.0/13 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
| 222.28.0.0/14 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS4538 | RADB | MAINT-AS58453 | 11/13/2023 |
Origin ASNs (2)
AS4538MOAS
ERX-CERNET-BKB - China Education and Research Network Center
AS24350MOAS
CNGI-BJ-IX4-AS-AP - CERNET2 IX at Beijing University of Posts and Telecommunications
Geolocation
API
Open https://api.ipctl.io/v1/prefix/222.28.16.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/222.28.16.0/21" | jq
External Links