HomePrefix Lookup121.192.0.0/16

121.192.0.0/16

🇨🇳
CIDR
121.192.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇨🇳 China
City
Shanghai
RIR
APNIC
Status
allocated
Allocated
7/11/2006

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
121.192.0.0/16AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA
APNICRADB
6/1/2026

Covering Prefix

56 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
121.192.192.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.192.0/18AS24368CNGI-XMN-IX-AS-AP - CERNET2 IX at Xiamen UniversityNo ROA—6/1/2026
121.192.160.0/19AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.160.0/19AS24368CNGI-XMN-IX-AS-AP - CERNET2 IX at Xiamen UniversityNo ROA—6/1/2026
121.192.64.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.64.0/20AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.16.0/21AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.16.0/21AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.60.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.32.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.4.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.56.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.44.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.40.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.36.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.24.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.40.0/22AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.4.0/22AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.24.0/22AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.56.0/22AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.32.0/22AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.36.0/22AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.44.0/22AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.60.0/22AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.48.0/23AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.30.0/23AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.50.0/23AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.52.0/23AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.130.0/23AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.50.0/23AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.30.0/23AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.48.0/23AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.138.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.12.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.13.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.11.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.9.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.8.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.2.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.3.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.128.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.129.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.132.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.0.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.134.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.137.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—6/1/2026
121.192.3.0/24AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.11.0/24AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.0.0/24AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.9.0/24AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.8.0/24AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.12.0/24AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.2.0/24AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026
121.192.13.0/24AS24367CNGI-HZH-IX-AS-AP - CERNET2 IX at Zhejiang UniversityNo ROA—6/1/2026

IRR Route Objects

2
OriginRegistryMaintainerModified
AS4538APNICMAINT-CERNET-AP1/5/2009
AS4538RADBMAINT-AS463711/13/2023
Geolocation
Country🇨🇳ChinaCN
RegionShanghai
CityShanghai
GEThttps://api.ipctl.io/v1/prefix/121.192.0.0/16

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

curl -s "https://api.ipctl.io/v1/prefix/121.192.0.0/16" | jq