Summary

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

APNIC

Country / Region

Status

ALLOCATED PORTABLE

Abuse

abuse@cernet.edu.cn

Contact

abuse@cernet.edu.cn

helpdesk@cernet.edu.cn

RegDate

Updated

2020-09-03T09:16:07Z

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 is invalid
mnt-by:         MAINT-CERNET-AP
last-modified:  2023-12-13T13:07:11Z
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