Home Prefix Lookup222.204.0.0/16

222.204.0.0/16

🇨🇳

IPv4APNICannouncedMOASNo ROA

CIDR

222.204.0.0/16

IP Version

IPv4

Addresses

65.5K

Mask

/16 (255.255.0.0)

Country

🇨🇳 China

City

Shanghai

RIR

APNIC

Status

announced

Allocated

Announced BGP Routes

2 of 2 routes

MOAS - 2 origin ASNs

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
222.204.0.0/16	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.0.0/16	AS24364CNGI-SH-IX-AS-AP - CERNET2 IX at Shanghai Jiaotong University	No ROA	—	6/13/2026

Covering Prefix

55 less-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
222.192.0.0/12	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.0.0/18	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.0.0/18	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.64.0/19	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.64.0/19	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.192.0/20	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.208.0/20	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.240.0/20	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.176.0/20	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.192.0/20	AS24364CNGI-SH-IX-AS-AP - CERNET2 IX at Shanghai Jiaotong University	No ROA	—	6/13/2026
222.204.240.0/20	AS24364CNGI-SH-IX-AS-AP - CERNET2 IX at Shanghai Jiaotong University	No ROA	—	6/13/2026
222.204.208.0/20	AS24364CNGI-SH-IX-AS-AP - CERNET2 IX at Shanghai Jiaotong University	No ROA	—	6/13/2026
222.204.176.0/20	AS24366CNGI-SH-IX3-AS-AP - CERNET2 IX at Tongji University	No ROA	—	6/13/2026
222.204.232.0/21	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.232.0/21	AS24364CNGI-SH-IX-AS-AP - CERNET2 IX at Shanghai Jiaotong University	No ROA	—	6/13/2026
222.204.108.0/22	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.112.0/22	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.100.0/22	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.104.0/22	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.112.0/22	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.104.0/22	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.100.0/22	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.108.0/22	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.116.0/23	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.116.0/23	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.121.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.40.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.42.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.43.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.44.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.96.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.97.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.98.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.99.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.118.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.120.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.122.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.123.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.124.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.125.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.126.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.127.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.192.0/24	AS4538ERX-CERNET-BKB - China Education and Research Network Center	No ROA	—	6/13/2026
222.204.127.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.124.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.123.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.43.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.120.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.40.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.99.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.97.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.96.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.44.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.126.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026
222.204.42.0/24	AS138370CNGI-NCH-IX-AS-AP - CERNET2 regional IX at Nanchang University	No ROA	—	6/13/2026

Origin ASNs (2)

AS4538MOAS

ERX-CERNET-BKB - China Education and Research Network Center

AS24364MOAS

CNGI-SH-IX-AS-AP - CERNET2 IX at Shanghai Jiaotong University

Geolocation

Country🇨🇳ChinaCN

RegionShanghai

CityShanghai

Coordinates31.2304, 121.4740 ↗

API

Open

GEThttps://api.ipctl.io/v1/prefix/222.204.0.0/16

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

curl -s "https://api.ipctl.io/v1/prefix/222.204.0.0/16" | jq

External Links

RIPEstat Hurricane Electric BGP