Summary

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

APNIC

Country

Status

ALLOCATED PORTABLE

RegDate

Updated

2020-09-03T09:16:00Z

Whois

inetnum:        121.48.0.0 - 121.49.255.255
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:  2020-09-03T09:16:00Z
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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        [email protected] 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:         [email protected]
remarks:        [email protected]
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

CIDR

121.48.0.0/24 121.48.1.0/24 121.48.2.0/24 121.48.3.0/24
121.48.5.0/24 121.48.6.0/24 121.48.7.0/24 121.48.8.0/24
121.48.10.0/24 121.48.11.0/24 121.48.12.0/24 121.48.13.0/24
121.48.15.0/24 121.48.16.0/24 121.48.17.0/24 121.48.18.0/24
121.48.20.0/24 121.48.21.0/24 121.48.22.0/24 121.48.23.0/24
121.48.25.0/24 121.48.26.0/24 121.48.27.0/24 121.48.28.0/24
121.48.30.0/24 121.48.31.0/24 121.48.32.0/24 121.48.33.0/24
121.48.35.0/24 121.48.36.0/24 121.48.37.0/24 121.48.38.0/24
121.48.40.0/24 121.48.41.0/24 121.48.42.0/24 121.48.43.0/24
121.48.45.0/24 121.48.46.0/24 121.48.47.0/24 121.48.48.0/24
121.48.50.0/24 121.48.51.0/24 121.48.52.0/24 121.48.53.0/24
121.48.55.0/24 121.48.56.0/24 121.48.57.0/24 121.48.58.0/24
121.48.60.0/24 121.48.61.0/24 121.48.62.0/24 121.48.63.0/24
121.48.65.0/24 121.48.66.0/24 121.48.67.0/24 121.48.68.0/24
121.48.70.0/24 121.48.71.0/24 121.48.72.0/24 121.48.73.0/24
121.48.75.0/24 121.48.76.0/24 121.48.77.0/24 121.48.78.0/24
121.48.80.0/24 121.48.81.0/24 121.48.82.0/24 121.48.83.0/24
121.48.85.0/24 121.48.86.0/24 121.48.87.0/24 121.48.88.0/24
121.48.90.0/24 121.48.91.0/24 121.48.92.0/24 121.48.93.0/24
121.48.95.0/24 121.48.96.0/24 121.48.97.0/24 121.48.98.0/24
121.48.100.0/24 121.48.101.0/24 121.48.102.0/24 121.48.103.0/24
121.48.105.0/24 121.48.106.0/24 121.48.107.0/24 121.48.108.0/24
121.48.110.0/24 121.48.111.0/24 121.48.112.0/24 121.48.113.0/24
121.48.115.0/24 121.48.116.0/24 121.48.117.0/24 121.48.118.0/24
121.48.120.0/24 121.48.121.0/24 121.48.122.0/24 121.48.123.0/24
121.48.125.0/24 121.48.126.0/24 121.48.127.0/24 121.48.128.0/24
121.48.130.0/24 121.48.131.0/24 121.48.132.0/24 121.48.133.0/24
121.48.135.0/24 121.48.136.0/24 121.48.137.0/24 121.48.138.0/24
121.48.140.0/24 121.48.141.0/24 121.48.142.0/24 121.48.143.0/24
121.48.145.0/24 121.48.146.0/24 121.48.147.0/24 121.48.148.0/24
121.48.150.0/24 121.48.151.0/24 121.48.152.0/24 121.48.153.0/24
121.48.155.0/24 121.48.156.0/24 121.48.157.0/24 121.48.158.0/24
121.48.160.0/24 121.48.161.0/24 121.48.162.0/24 121.48.163.0/24
121.48.165.0/24 121.48.166.0/24 121.48.167.0/24 121.48.168.0/24
121.48.170.0/24 121.48.171.0/24 121.48.172.0/24 121.48.173.0/24
121.48.175.0/24 121.48.176.0/24 121.48.177.0/24 121.48.178.0/24
121.48.180.0/24 121.48.181.0/24 121.48.182.0/24 121.48.183.0/24
121.48.185.0/24 121.48.186.0/24 121.48.187.0/24 121.48.188.0/24
121.48.190.0/24 121.48.191.0/24 121.48.192.0/24 121.48.193.0/24
121.48.195.0/24 121.48.196.0/24 121.48.197.0/24 121.48.198.0/24
121.48.200.0/24 121.48.201.0/24 121.48.202.0/24 121.48.203.0/24
121.48.205.0/24 121.48.206.0/24 121.48.207.0/24 121.48.208.0/24
121.48.210.0/24 121.48.211.0/24 121.48.212.0/24 121.48.213.0/24
121.48.215.0/24 121.48.216.0/24 121.48.217.0/24 121.48.218.0/24
121.48.220.0/24 121.48.221.0/24 121.48.222.0/24 121.48.223.0/24
121.48.225.0/24 121.48.226.0/24 121.48.227.0/24 121.48.228.0/24
121.48.230.0/24 121.48.231.0/24 121.48.232.0/24 121.48.233.0/24
121.48.235.0/24 121.48.236.0/24 121.48.237.0/24 121.48.238.0/24
121.48.240.0/24 121.48.241.0/24 121.48.242.0/24 121.48.243.0/24
121.48.245.0/24 121.48.246.0/24 121.48.247.0/24 121.48.248.0/24
121.48.250.0/24 121.48.251.0/24 121.48.252.0/24 121.48.253.0/24
121.48.255.0/24 121.49.0.0/24 121.49.1.0/24 121.49.2.0/24
121.49.4.0/24 121.49.5.0/24 121.49.6.0/24 121.49.7.0/24
121.49.9.0/24 121.49.10.0/24 121.49.11.0/24 121.49.12.0/24
121.49.14.0/24 121.49.15.0/24 121.49.16.0/24 121.49.17.0/24
121.49.19.0/24 121.49.20.0/24 121.49.21.0/24 121.49.22.0/24
121.49.24.0/24 121.49.25.0/24 121.49.26.0/24 121.49.27.0/24
121.49.29.0/24 121.49.30.0/24 121.49.31.0/24 121.49.32.0/24
121.49.34.0/24 121.49.35.0/24 121.49.36.0/24 121.49.37.0/24
121.49.39.0/24 121.49.40.0/24 121.49.41.0/24 121.49.42.0/24
121.49.44.0/24 121.49.45.0/24 121.49.46.0/24 121.49.47.0/24
121.49.49.0/24 121.49.50.0/24 121.49.51.0/24 121.49.52.0/24
121.49.54.0/24 121.49.55.0/24 121.49.56.0/24 121.49.57.0/24
121.49.59.0/24 121.49.60.0/24 121.49.61.0/24 121.49.62.0/24
121.49.64.0/24 121.49.65.0/24 121.49.66.0/24 121.49.67.0/24
121.49.69.0/24 121.49.70.0/24 121.49.71.0/24 121.49.72.0/24
121.49.74.0/24 121.49.75.0/24 121.49.76.0/24 121.49.77.0/24
121.49.79.0/24 121.49.80.0/24 121.49.81.0/24 121.49.82.0/24
121.49.84.0/24 121.49.85.0/24 121.49.86.0/24 121.49.87.0/24
121.49.89.0/24 121.49.90.0/24 121.49.91.0/24 121.49.92.0/24
121.49.94.0/24 121.49.95.0/24 121.49.96.0/24 121.49.97.0/24
121.49.99.0/24 121.49.100.0/24 121.49.101.0/24 121.49.102.0/24
121.49.104.0/24 121.49.105.0/24 121.49.106.0/24 121.49.107.0/24
121.49.109.0/24 121.49.110.0/24 121.49.111.0/24 121.49.112.0/24
121.49.114.0/24 121.49.115.0/24 121.49.116.0/24 121.49.117.0/24
121.49.119.0/24 121.49.120.0/24 121.49.121.0/24 121.49.122.0/24
121.49.124.0/24 121.49.125.0/24 121.49.126.0/24 121.49.127.0/24
121.49.129.0/24 121.49.130.0/24 121.49.131.0/24 121.49.132.0/24
121.49.134.0/24 121.49.135.0/24 121.49.136.0/24 121.49.137.0/24
121.49.139.0/24 121.49.140.0/24 121.49.141.0/24 121.49.142.0/24
121.49.144.0/24 121.49.145.0/24 121.49.146.0/24 121.49.147.0/24
121.49.149.0/24 121.49.150.0/24 121.49.151.0/24 121.49.152.0/24
121.49.154.0/24 121.49.155.0/24 121.49.156.0/24 121.49.157.0/24
121.49.159.0/24 121.49.160.0/24 121.49.161.0/24 121.49.162.0/24
121.49.164.0/24 121.49.165.0/24 121.49.166.0/24 121.49.167.0/24
121.49.169.0/24 121.49.170.0/24 121.49.171.0/24 121.49.172.0/24
121.49.174.0/24 121.49.175.0/24 121.49.176.0/24 121.49.177.0/24
121.49.179.0/24 121.49.180.0/24 121.49.181.0/24 121.49.182.0/24
121.49.184.0/24 121.49.185.0/24 121.49.186.0/24 121.49.187.0/24
121.49.189.0/24 121.49.190.0/24 121.49.191.0/24 121.49.192.0/24
121.49.194.0/24 121.49.195.0/24 121.49.196.0/24 121.49.197.0/24
121.49.199.0/24 121.49.200.0/24 121.49.201.0/24 121.49.202.0/24
121.49.204.0/24 121.49.205.0/24 121.49.206.0/24 121.49.207.0/24
121.49.209.0/24 121.49.210.0/24 121.49.211.0/24 121.49.212.0/24
121.49.214.0/24 121.49.215.0/24 121.49.216.0/24 121.49.217.0/24
121.49.219.0/24 121.49.220.0/24 121.49.221.0/24 121.49.222.0/24
121.49.224.0/24 121.49.225.0/24 121.49.226.0/24 121.49.227.0/24
121.49.229.0/24 121.49.230.0/24 121.49.231.0/24 121.49.232.0/24
121.49.234.0/24 121.49.235.0/24 121.49.236.0/24 121.49.237.0/24
121.49.239.0/24 121.49.240.0/24 121.49.241.0/24 121.49.242.0/24
121.49.244.0/24 121.49.245.0/24 121.49.246.0/24 121.49.247.0/24
121.49.249.0/24 121.49.250.0/24 121.49.251.0/24 121.49.252.0/24
121.49.254.0/24 121.49.255.0/24