Summary

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

APNIC

Country

Status

ALLOCATED PORTABLE

RegDate

Updated

2020-09-03T09:15:58Z

Whois

inetnum:        121.248.0.0 - 121.251.255.255
netname:        NJR-CERNET
descr:          China Education and Research Network
descr:          Nanjing 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:  2020-09-03T09:15:58Z
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

121.250.0.0/24 121.250.1.0/24 121.250.2.0/24 121.250.3.0/24
121.250.5.0/24 121.250.6.0/24 121.250.7.0/24 121.250.8.0/24
121.250.10.0/24 121.250.11.0/24 121.250.12.0/24 121.250.13.0/24
121.250.15.0/24 121.250.16.0/24 121.250.17.0/24 121.250.18.0/24
121.250.20.0/24 121.250.21.0/24 121.250.22.0/24 121.250.23.0/24
121.250.25.0/24 121.250.26.0/24 121.250.27.0/24 121.250.28.0/24
121.250.30.0/24 121.250.31.0/24 121.250.32.0/24 121.250.33.0/24
121.250.35.0/24 121.250.36.0/24 121.250.37.0/24 121.250.38.0/24
121.250.40.0/24 121.250.41.0/24 121.250.42.0/24 121.250.43.0/24
121.250.45.0/24 121.250.46.0/24 121.250.47.0/24 121.250.48.0/24
121.250.50.0/24 121.250.51.0/24 121.250.52.0/24 121.250.53.0/24
121.250.55.0/24 121.250.56.0/24 121.250.57.0/24 121.250.58.0/24
121.250.60.0/24 121.250.61.0/24 121.250.62.0/24 121.250.63.0/24
121.250.65.0/24 121.250.66.0/24 121.250.67.0/24 121.250.68.0/24
121.250.70.0/24 121.250.71.0/24 121.250.72.0/24 121.250.73.0/24
121.250.75.0/24 121.250.76.0/24 121.250.77.0/24 121.250.78.0/24
121.250.80.0/24 121.250.81.0/24 121.250.82.0/24 121.250.83.0/24
121.250.85.0/24 121.250.86.0/24 121.250.87.0/24 121.250.88.0/24
121.250.90.0/24 121.250.91.0/24 121.250.92.0/24 121.250.93.0/24
121.250.95.0/24 121.250.96.0/24 121.250.97.0/24 121.250.98.0/24
121.250.100.0/24 121.250.101.0/24 121.250.102.0/24 121.250.103.0/24
121.250.105.0/24 121.250.106.0/24 121.250.107.0/24 121.250.108.0/24
121.250.110.0/24 121.250.111.0/24 121.250.112.0/24 121.250.113.0/24
121.250.115.0/24 121.250.116.0/24 121.250.117.0/24 121.250.118.0/24
121.250.120.0/24 121.250.121.0/24 121.250.122.0/24 121.250.123.0/24
121.250.125.0/24 121.250.126.0/24 121.250.127.0/24 121.250.128.0/24
121.250.130.0/24 121.250.131.0/24 121.250.132.0/24 121.250.133.0/24
121.250.135.0/24 121.250.136.0/24 121.250.137.0/24 121.250.138.0/24
121.250.140.0/24 121.250.141.0/24 121.250.142.0/24 121.250.143.0/24
121.250.145.0/24 121.250.146.0/24 121.250.147.0/24 121.250.148.0/24
121.250.150.0/24 121.250.151.0/24 121.250.152.0/24 121.250.153.0/24
121.250.155.0/24 121.250.156.0/24 121.250.157.0/24 121.250.158.0/24
121.250.160.0/24 121.250.161.0/24 121.250.162.0/24 121.250.163.0/24
121.250.165.0/24 121.250.166.0/24 121.250.167.0/24 121.250.168.0/24
121.250.170.0/24 121.250.171.0/24 121.250.172.0/24 121.250.173.0/24
121.250.175.0/24 121.250.176.0/24 121.250.177.0/24 121.250.178.0/24
121.250.180.0/24 121.250.181.0/24 121.250.182.0/24 121.250.183.0/24
121.250.185.0/24 121.250.186.0/24 121.250.187.0/24 121.250.188.0/24
121.250.190.0/24 121.250.191.0/24 121.250.192.0/24 121.250.193.0/24
121.250.195.0/24 121.250.196.0/24 121.250.197.0/24 121.250.198.0/24
121.250.200.0/24 121.250.201.0/24 121.250.202.0/24 121.250.203.0/24
121.250.205.0/24 121.250.206.0/24 121.250.207.0/24 121.250.208.0/24
121.250.210.0/24 121.250.211.0/24 121.250.212.0/24 121.250.213.0/24
121.250.215.0/24 121.250.216.0/24 121.250.217.0/24 121.250.218.0/24
121.250.220.0/24 121.250.221.0/24 121.250.222.0/24 121.250.223.0/24
121.250.225.0/24 121.250.226.0/24 121.250.227.0/24 121.250.228.0/24
121.250.230.0/24 121.250.231.0/24 121.250.232.0/24 121.250.233.0/24
121.250.235.0/24 121.250.236.0/24 121.250.237.0/24 121.250.238.0/24
121.250.240.0/24 121.250.241.0/24 121.250.242.0/24 121.250.243.0/24
121.250.245.0/24 121.250.246.0/24 121.250.247.0/24 121.250.248.0/24
121.250.250.0/24 121.250.251.0/24 121.250.252.0/24 121.250.253.0/24
121.250.255.0/24 121.251.0.0/24 121.251.1.0/24 121.251.2.0/24
121.251.4.0/24 121.251.5.0/24 121.251.6.0/24 121.251.7.0/24
121.251.9.0/24 121.251.10.0/24 121.251.11.0/24 121.251.12.0/24
121.251.14.0/24 121.251.15.0/24 121.251.16.0/24 121.251.17.0/24
121.251.19.0/24 121.251.20.0/24 121.251.21.0/24 121.251.22.0/24
121.251.24.0/24 121.251.25.0/24 121.251.26.0/24 121.251.27.0/24
121.251.29.0/24 121.251.30.0/24 121.251.31.0/24 121.251.32.0/24
121.251.34.0/24 121.251.35.0/24 121.251.36.0/24 121.251.37.0/24
121.251.39.0/24 121.251.40.0/24 121.251.41.0/24 121.251.42.0/24
121.251.44.0/24 121.251.45.0/24 121.251.46.0/24 121.251.47.0/24
121.251.49.0/24 121.251.50.0/24 121.251.51.0/24 121.251.52.0/24
121.251.54.0/24 121.251.55.0/24 121.251.56.0/24 121.251.57.0/24
121.251.59.0/24 121.251.60.0/24 121.251.61.0/24 121.251.62.0/24
121.251.64.0/24 121.251.65.0/24 121.251.66.0/24 121.251.67.0/24
121.251.69.0/24 121.251.70.0/24 121.251.71.0/24 121.251.72.0/24
121.251.74.0/24 121.251.75.0/24 121.251.76.0/24 121.251.77.0/24
121.251.79.0/24 121.251.80.0/24 121.251.81.0/24 121.251.82.0/24
121.251.84.0/24 121.251.85.0/24 121.251.86.0/24 121.251.87.0/24
121.251.89.0/24 121.251.90.0/24 121.251.91.0/24 121.251.92.0/24
121.251.94.0/24 121.251.95.0/24 121.251.96.0/24 121.251.97.0/24
121.251.99.0/24 121.251.100.0/24 121.251.101.0/24 121.251.102.0/24
121.251.104.0/24 121.251.105.0/24 121.251.106.0/24 121.251.107.0/24
121.251.109.0/24 121.251.110.0/24 121.251.111.0/24 121.251.112.0/24
121.251.114.0/24 121.251.115.0/24 121.251.116.0/24 121.251.117.0/24
121.251.119.0/24 121.251.120.0/24 121.251.121.0/24 121.251.122.0/24
121.251.124.0/24 121.251.125.0/24 121.251.126.0/24 121.251.127.0/24
121.251.129.0/24 121.251.130.0/24 121.251.131.0/24 121.251.132.0/24
121.251.134.0/24 121.251.135.0/24 121.251.136.0/24 121.251.137.0/24
121.251.139.0/24 121.251.140.0/24 121.251.141.0/24 121.251.142.0/24
121.251.144.0/24 121.251.145.0/24 121.251.146.0/24 121.251.147.0/24
121.251.149.0/24 121.251.150.0/24 121.251.151.0/24 121.251.152.0/24
121.251.154.0/24 121.251.155.0/24 121.251.156.0/24 121.251.157.0/24
121.251.159.0/24 121.251.160.0/24 121.251.161.0/24 121.251.162.0/24
121.251.164.0/24 121.251.165.0/24 121.251.166.0/24 121.251.167.0/24
121.251.169.0/24 121.251.170.0/24 121.251.171.0/24 121.251.172.0/24
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121.251.179.0/24 121.251.180.0/24 121.251.181.0/24 121.251.182.0/24
121.251.184.0/24 121.251.185.0/24 121.251.186.0/24 121.251.187.0/24
121.251.189.0/24 121.251.190.0/24 121.251.191.0/24 121.251.192.0/24
121.251.194.0/24 121.251.195.0/24 121.251.196.0/24 121.251.197.0/24
121.251.199.0/24 121.251.200.0/24 121.251.201.0/24 121.251.202.0/24
121.251.204.0/24 121.251.205.0/24 121.251.206.0/24 121.251.207.0/24
121.251.209.0/24 121.251.210.0/24 121.251.211.0/24 121.251.212.0/24
121.251.214.0/24 121.251.215.0/24 121.251.216.0/24 121.251.217.0/24
121.251.219.0/24 121.251.220.0/24 121.251.221.0/24 121.251.222.0/24
121.251.224.0/24 121.251.225.0/24 121.251.226.0/24 121.251.227.0/24
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121.251.234.0/24 121.251.235.0/24 121.251.236.0/24 121.251.237.0/24
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121.251.254.0/24 121.251.255.0/24