Summary

NetName
CDR-CERNET
OrgName
China Education and Research Network
CIDR
RIR

APNIC

Country

Status

ALLOCATED PORTABLE

Abuse

Contact
RegDate

Updated

2020-09-03T09:16:07Z

Routing

AS Desc Country IPv4 NUMs IPv6 NUMs

Whois

inetnum:        223.128.0.0 - 223.129.255.255
netname:        CDR-CERNET
descr:          China Education and Research Network
descr:          Chengdu Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
remarks:        confederation
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:07Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Research Center,
address:        Main Bldg, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
fax-no:         +86-10-62785933
e-mail:         abuse@cernet.edu.cn
abuse-mailbox:  abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        abuse@cernet.edu.cn was validated on 2025-01-22
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-01-22T13:47:43Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Research Center,
address:        Main Bldg, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
e-mail:         abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        abuse@cernet.edu.cn was validated on 2025-01-22
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-01-22T16:25:45Z
source:         APNIC

role:           CERNET Helpdesk
address:        CERNET Center
address:        Beijing 100084, China
country:        CN
phone:          +86-10-6278-4049
fax-no:         +86-10-6278-5933
e-mail:         helpdesk@cernet.edu.cn
remarks:        abuse@cernet.edu.cn
admin-c:        XL1-CN
tech-c:         SZ2-AP
nic-hdl:        CER-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2020-09-03T09:14:12Z
source:         APNIC

Graph

CIDR

223.128.0.0/24 223.128.1.0/24 223.128.2.0/24 223.128.3.0/24
223.128.5.0/24 223.128.6.0/24 223.128.7.0/24 223.128.8.0/24
223.128.10.0/24 223.128.11.0/24 223.128.12.0/24 223.128.13.0/24
223.128.15.0/24 223.128.16.0/24 223.128.17.0/24 223.128.18.0/24
223.128.20.0/24 223.128.21.0/24 223.128.22.0/24 223.128.23.0/24
223.128.25.0/24 223.128.26.0/24 223.128.27.0/24 223.128.28.0/24
223.128.30.0/24 223.128.31.0/24 223.128.32.0/24 223.128.33.0/24
223.128.35.0/24 223.128.36.0/24 223.128.37.0/24 223.128.38.0/24
223.128.40.0/24 223.128.41.0/24 223.128.42.0/24 223.128.43.0/24
223.128.45.0/24 223.128.46.0/24 223.128.47.0/24 223.128.48.0/24
223.128.50.0/24 223.128.51.0/24 223.128.52.0/24 223.128.53.0/24
223.128.55.0/24 223.128.56.0/24 223.128.57.0/24 223.128.58.0/24
223.128.60.0/24 223.128.61.0/24 223.128.62.0/24 223.128.63.0/24
223.128.65.0/24 223.128.66.0/24 223.128.67.0/24 223.128.68.0/24
223.128.70.0/24 223.128.71.0/24 223.128.72.0/24 223.128.73.0/24
223.128.75.0/24 223.128.76.0/24 223.128.77.0/24 223.128.78.0/24
223.128.80.0/24 223.128.81.0/24 223.128.82.0/24 223.128.83.0/24
223.128.85.0/24 223.128.86.0/24 223.128.87.0/24 223.128.88.0/24
223.128.90.0/24 223.128.91.0/24 223.128.92.0/24 223.128.93.0/24
223.128.95.0/24 223.128.96.0/24 223.128.97.0/24 223.128.98.0/24
223.128.100.0/24 223.128.101.0/24 223.128.102.0/24 223.128.103.0/24
223.128.105.0/24 223.128.106.0/24 223.128.107.0/24 223.128.108.0/24
223.128.110.0/24 223.128.111.0/24 223.128.112.0/24 223.128.113.0/24
223.128.115.0/24 223.128.116.0/24 223.128.117.0/24 223.128.118.0/24
223.128.120.0/24 223.128.121.0/24 223.128.122.0/24 223.128.123.0/24
223.128.125.0/24 223.128.126.0/24 223.128.127.0/24 223.128.128.0/24
223.128.130.0/24 223.128.131.0/24 223.128.132.0/24 223.128.133.0/24
223.128.135.0/24 223.128.136.0/24 223.128.137.0/24 223.128.138.0/24
223.128.140.0/24 223.128.141.0/24 223.128.142.0/24 223.128.143.0/24
223.128.145.0/24 223.128.146.0/24 223.128.147.0/24 223.128.148.0/24
223.128.150.0/24 223.128.151.0/24 223.128.152.0/24 223.128.153.0/24
223.128.155.0/24 223.128.156.0/24 223.128.157.0/24 223.128.158.0/24
223.128.160.0/24 223.128.161.0/24 223.128.162.0/24 223.128.163.0/24
223.128.165.0/24 223.128.166.0/24 223.128.167.0/24 223.128.168.0/24
223.128.170.0/24 223.128.171.0/24 223.128.172.0/24 223.128.173.0/24
223.128.175.0/24 223.128.176.0/24 223.128.177.0/24 223.128.178.0/24
223.128.180.0/24 223.128.181.0/24 223.128.182.0/24 223.128.183.0/24
223.128.185.0/24 223.128.186.0/24 223.128.187.0/24 223.128.188.0/24
223.128.190.0/24 223.128.191.0/24 223.128.192.0/24 223.128.193.0/24
223.128.195.0/24 223.128.196.0/24 223.128.197.0/24 223.128.198.0/24
223.128.200.0/24 223.128.201.0/24 223.128.202.0/24 223.128.203.0/24
223.128.205.0/24 223.128.206.0/24 223.128.207.0/24 223.128.208.0/24
223.128.210.0/24 223.128.211.0/24 223.128.212.0/24 223.128.213.0/24
223.128.215.0/24 223.128.216.0/24 223.128.217.0/24 223.128.218.0/24
223.128.220.0/24 223.128.221.0/24 223.128.222.0/24 223.128.223.0/24
223.128.225.0/24 223.128.226.0/24 223.128.227.0/24 223.128.228.0/24
223.128.230.0/24 223.128.231.0/24 223.128.232.0/24 223.128.233.0/24
223.128.235.0/24 223.128.236.0/24 223.128.237.0/24 223.128.238.0/24
223.128.240.0/24 223.128.241.0/24 223.128.242.0/24 223.128.243.0/24
223.128.245.0/24 223.128.246.0/24 223.128.247.0/24 223.128.248.0/24
223.128.250.0/24 223.128.251.0/24 223.128.252.0/24 223.128.253.0/24
223.128.255.0/24