HomePrefix Lookup121.193.0.0/16

121.193.0.0/16

🇨🇳
IPv4APNICallocatedAS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA
CIDR
121.193.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇨🇳 China
City
Haidian (Haidian Qu)
RIR
APNIC
Status
allocated
Allocated
7/17/2006

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
121.193.0.0/16AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA
APNICRADB
6/1/2026

Covering Prefix

16 less-specific announcements
PrefixOrigin ASRPKIIRRLast Seen
121.192.0.0/14AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.0.0/15AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.193.160.0/19AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.193.80.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.193.128.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.193.64.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.193.224.0/20AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—6/1/2026
121.193.192.0/20AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—6/1/2026
121.193.144.0/21AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.193.248.0/21AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—6/1/2026
121.193.208.0/21AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—6/1/2026
121.193.240.0/21AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—6/1/2026
121.193.96.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.193.216.0/23AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—6/1/2026
121.193.222.0/24AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—6/1/2026
121.193.221.0/24AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—6/1/2026

IRR Route Objects

2
OriginRegistryMaintainerModified
AS4538APNICMAINT-CERNET-AP1/5/2009
AS4538RADBMAINT-AS463711/13/2023
Origin ASN
AS4538
ERX-CERNET-BKB - China Education and Research Network Center
Geolocation
Country🇨🇳ChinaCN
RegionBeijing
CityHaidian (Haidian Qu)
Coordinates40.0045, 116.3290 ↗
API
Open
GEThttps://api.ipctl.io/v1/prefix/121.193.0.0/16

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

curl -s "https://api.ipctl.io/v1/prefix/121.193.0.0/16" | jq
External Links
RIPEstat Hurricane Electric BGP