HomePrefix Lookup223.128.0.0/15

223.128.0.0/15

🇨🇳
IPv4APNICallocatedAS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA
CIDR
223.128.0.0/15
IP Version
IPv4
Addresses
131K
Mask
/15 (255.254.0.0)
Country
🇨🇳 China
City
Chengdu
RIR
APNIC
Status
allocated
Allocated
7/12/2010

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
223.128.0.0/15AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA
APNICRADB
6/13/2026

Covering Prefix

18 less-specific announcements
PrefixOrigin ASRPKIIRRLast Seen
223.128.0.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/13/2026
223.129.0.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/13/2026
223.128.0.0/17AS24355CNGI-CD-IX-AS-AP - CERNET2 IX at University of Electronic Science and Technology of ChinaNo ROA—6/13/2026
223.129.0.0/17AS24355CNGI-CD-IX-AS-AP - CERNET2 IX at University of Electronic Science and Technology of ChinaNo ROA—6/13/2026
223.128.128.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/13/2026
223.129.240.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/13/2026
223.128.160.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/13/2026
223.128.144.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/13/2026
223.128.128.0/20AS24355CNGI-CD-IX-AS-AP - CERNET2 IX at University of Electronic Science and Technology of ChinaNo ROA—6/13/2026
223.128.144.0/20AS24355CNGI-CD-IX-AS-AP - CERNET2 IX at University of Electronic Science and Technology of ChinaNo ROA—6/13/2026
223.128.160.0/20AS24355CNGI-CD-IX-AS-AP - CERNET2 IX at University of Electronic Science and Technology of ChinaNo ROA—6/13/2026
223.129.240.0/20AS138442CNGI-LSA-IX-AS-AP - CERNET2 regional IX at Tibet UniversityNo ROA—6/13/2026
223.129.0.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/13/2026
223.129.4.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/13/2026
223.129.4.0/22AS24355CNGI-CD-IX-AS-AP - CERNET2 IX at University of Electronic Science and Technology of ChinaNo ROA—6/13/2026
223.129.0.0/22AS24355CNGI-CD-IX-AS-AP - CERNET2 IX at University of Electronic Science and Technology of ChinaNo ROA—6/13/2026
223.129.252.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/13/2026
223.129.252.0/24AS138442CNGI-LSA-IX-AS-AP - CERNET2 regional IX at Tibet UniversityNo ROA—6/13/2026

IRR Route Objects

2
OriginRegistryMaintainerModified
AS4538APNICMAINT-CERNET-AP7/15/2010
AS4538RADBMAINT-AS463711/13/2023
Origin ASN
AS4538
ERX-CERNET-BKB - China Education and Research Network Center
Geolocation
Country🇨🇳ChinaCN
RegionSichuan
CityChengdu
Coordinates30.5723, 104.0670 ↗
API
Open
GEThttps://api.ipctl.io/v1/prefix/223.128.0.0/15

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/223.128.0.0/15" | jq
External Links
RIPEstat Hurricane Electric BGP