Summary

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

APNIC

Country

Status

ALLOCATED PORTABLE

Abuse

abuse@cernet.edu.cn

Contact

abuse@cernet.edu.cn

helpdesk@cernet.edu.cn

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:         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:  2024-07-03T13:05:44Z
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

CIDR

121.248.0.0/24 121.248.1.0/24 121.248.2.0/24 121.248.3.0/24
121.248.5.0/24 121.248.6.0/24 121.248.7.0/24 121.248.8.0/24
121.248.10.0/24 121.248.11.0/24 121.248.12.0/24 121.248.13.0/24
121.248.15.0/24 121.248.16.0/24 121.248.17.0/24 121.248.18.0/24
121.248.20.0/24 121.248.21.0/24 121.248.22.0/24 121.248.23.0/24
121.248.25.0/24 121.248.26.0/24 121.248.27.0/24 121.248.28.0/24
121.248.30.0/24 121.248.31.0/24 121.248.32.0/24 121.248.33.0/24
121.248.35.0/24 121.248.36.0/24 121.248.37.0/24 121.248.38.0/24
121.248.40.0/24 121.248.41.0/24 121.248.42.0/24 121.248.43.0/24
121.248.45.0/24 121.248.46.0/24 121.248.47.0/24 121.248.48.0/24
121.248.50.0/24 121.248.51.0/24 121.248.52.0/24 121.248.53.0/24
121.248.55.0/24 121.248.56.0/24 121.248.57.0/24 121.248.58.0/24
121.248.60.0/24 121.248.61.0/24 121.248.62.0/24 121.248.63.0/24
121.248.65.0/24 121.248.66.0/24 121.248.67.0/24 121.248.68.0/24
121.248.70.0/24 121.248.71.0/24 121.248.72.0/24 121.248.73.0/24
121.248.75.0/24 121.248.76.0/24 121.248.77.0/24 121.248.78.0/24
121.248.80.0/24 121.248.81.0/24 121.248.82.0/24 121.248.83.0/24
121.248.85.0/24 121.248.86.0/24 121.248.87.0/24 121.248.88.0/24
121.248.90.0/24 121.248.91.0/24 121.248.92.0/24 121.248.93.0/24
121.248.95.0/24 121.248.96.0/24 121.248.97.0/24 121.248.98.0/24
121.248.100.0/24 121.248.101.0/24 121.248.102.0/24 121.248.103.0/24
121.248.105.0/24 121.248.106.0/24 121.248.107.0/24 121.248.108.0/24
121.248.110.0/24 121.248.111.0/24 121.248.112.0/24 121.248.113.0/24
121.248.115.0/24 121.248.116.0/24 121.248.117.0/24 121.248.118.0/24
121.248.120.0/24 121.248.121.0/24 121.248.122.0/24 121.248.123.0/24
121.248.125.0/24 121.248.126.0/24 121.248.127.0/24 121.248.128.0/24
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121.248.150.0/24 121.248.151.0/24 121.248.152.0/24 121.248.153.0/24
121.248.155.0/24 121.248.156.0/24 121.248.157.0/24 121.248.158.0/24
121.248.160.0/24 121.248.161.0/24 121.248.162.0/24 121.248.163.0/24
121.248.165.0/24 121.248.166.0/24 121.248.167.0/24 121.248.168.0/24
121.248.170.0/24 121.248.171.0/24 121.248.172.0/24 121.248.173.0/24
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121.248.180.0/24 121.248.181.0/24 121.248.182.0/24 121.248.183.0/24
121.248.185.0/24 121.248.186.0/24 121.248.187.0/24 121.248.188.0/24
121.248.190.0/24 121.248.191.0/24 121.248.192.0/24 121.248.193.0/24
121.248.195.0/24 121.248.196.0/24 121.248.197.0/24 121.248.198.0/24
121.248.200.0/24 121.248.201.0/24 121.248.202.0/24 121.248.203.0/24
121.248.205.0/24 121.248.206.0/24 121.248.207.0/24 121.248.208.0/24
121.248.210.0/24 121.248.211.0/24 121.248.212.0/24 121.248.213.0/24
121.248.215.0/24 121.248.216.0/24 121.248.217.0/24 121.248.218.0/24
121.248.220.0/24 121.248.221.0/24 121.248.222.0/24 121.248.223.0/24
121.248.225.0/24 121.248.226.0/24 121.248.227.0/24 121.248.228.0/24
121.248.230.0/24 121.248.231.0/24 121.248.232.0/24 121.248.233.0/24
121.248.235.0/24 121.248.236.0/24 121.248.237.0/24 121.248.238.0/24
121.248.240.0/24 121.248.241.0/24 121.248.242.0/24 121.248.243.0/24
121.248.245.0/24 121.248.246.0/24 121.248.247.0/24 121.248.248.0/24
121.248.250.0/24 121.248.251.0/24 121.248.252.0/24 121.248.253.0/24
121.248.255.0/24 121.249.0.0/24 121.249.1.0/24 121.249.2.0/24
121.249.4.0/24 121.249.5.0/24 121.249.6.0/24 121.249.7.0/24
121.249.9.0/24 121.249.10.0/24 121.249.11.0/24 121.249.12.0/24
121.249.14.0/24 121.249.15.0/24 121.249.16.0/24 121.249.17.0/24
121.249.19.0/24 121.249.20.0/24 121.249.21.0/24 121.249.22.0/24
121.249.24.0/24 121.249.25.0/24 121.249.26.0/24 121.249.27.0/24
121.249.29.0/24 121.249.30.0/24 121.249.31.0/24 121.249.32.0/24
121.249.34.0/24 121.249.35.0/24 121.249.36.0/24 121.249.37.0/24
121.249.39.0/24 121.249.40.0/24 121.249.41.0/24 121.249.42.0/24
121.249.44.0/24 121.249.45.0/24 121.249.46.0/24 121.249.47.0/24
121.249.49.0/24 121.249.50.0/24 121.249.51.0/24 121.249.52.0/24
121.249.54.0/24 121.249.55.0/24 121.249.56.0/24 121.249.57.0/24
121.249.59.0/24 121.249.60.0/24 121.249.61.0/24 121.249.62.0/24
121.249.64.0/24 121.249.65.0/24 121.249.66.0/24 121.249.67.0/24
121.249.69.0/24 121.249.70.0/24 121.249.71.0/24 121.249.72.0/24
121.249.74.0/24 121.249.75.0/24 121.249.76.0/24 121.249.77.0/24
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121.249.89.0/24 121.249.90.0/24 121.249.91.0/24 121.249.92.0/24
121.249.94.0/24 121.249.95.0/24 121.249.96.0/24 121.249.97.0/24
121.249.99.0/24 121.249.100.0/24 121.249.101.0/24 121.249.102.0/24
121.249.104.0/24 121.249.105.0/24 121.249.106.0/24 121.249.107.0/24
121.249.109.0/24 121.249.110.0/24 121.249.111.0/24 121.249.112.0/24
121.249.114.0/24 121.249.115.0/24 121.249.116.0/24 121.249.117.0/24
121.249.119.0/24 121.249.120.0/24 121.249.121.0/24 121.249.122.0/24
121.249.124.0/24 121.249.125.0/24 121.249.126.0/24 121.249.127.0/24
121.249.129.0/24 121.249.130.0/24 121.249.131.0/24 121.249.132.0/24
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121.249.144.0/24 121.249.145.0/24 121.249.146.0/24 121.249.147.0/24
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121.249.154.0/24 121.249.155.0/24 121.249.156.0/24 121.249.157.0/24
121.249.159.0/24 121.249.160.0/24 121.249.161.0/24 121.249.162.0/24
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121.249.184.0/24 121.249.185.0/24 121.249.186.0/24 121.249.187.0/24
121.249.189.0/24 121.249.190.0/24 121.249.191.0/24 121.249.192.0/24
121.249.194.0/24 121.249.195.0/24 121.249.196.0/24 121.249.197.0/24
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121.249.204.0/24 121.249.205.0/24 121.249.206.0/24 121.249.207.0/24
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121.249.214.0/24 121.249.215.0/24 121.249.216.0/24 121.249.217.0/24
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121.249.254.0/24 121.249.255.0/24 121.250.0.0/24 121.250.1.0/24
121.250.3.0/24 121.250.4.0/24 121.250.5.0/24 121.250.6.0/24
121.250.8.0/24 121.250.9.0/24 121.250.10.0/24 121.250.11.0/24
121.250.13.0/24 121.250.14.0/24 121.250.15.0/24 121.250.16.0/24
121.250.18.0/24 121.250.19.0/24 121.250.20.0/24 121.250.21.0/24
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121.250.28.0/24 121.250.29.0/24 121.250.30.0/24 121.250.31.0/24
121.250.33.0/24 121.250.34.0/24 121.250.35.0/24 121.250.36.0/24
121.250.38.0/24 121.250.39.0/24 121.250.40.0/24 121.250.41.0/24
121.250.43.0/24 121.250.44.0/24 121.250.45.0/24 121.250.46.0/24
121.250.48.0/24 121.250.49.0/24 121.250.50.0/24 121.250.51.0/24
121.250.53.0/24 121.250.54.0/24 121.250.55.0/24 121.250.56.0/24
121.250.58.0/24 121.250.59.0/24 121.250.60.0/24 121.250.61.0/24
121.250.63.0/24 121.250.64.0/24 121.250.65.0/24 121.250.66.0/24
121.250.68.0/24 121.250.69.0/24 121.250.70.0/24 121.250.71.0/24
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121.250.83.0/24 121.250.84.0/24 121.250.85.0/24 121.250.86.0/24
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121.250.93.0/24 121.250.94.0/24 121.250.95.0/24 121.250.96.0/24
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121.251.192.0/24 121.251.193.0/24 121.251.194.0/24 121.251.195.0/24
121.251.197.0/24 121.251.198.0/24 121.251.199.0/24 121.251.200.0/24
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121.251.212.0/24 121.251.213.0/24 121.251.214.0/24 121.251.215.0/24
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