Summary
| Country |
 China
|
| Domain | cernet.net |
| Size | 256 |
| IP Range |
42.247.113.0 – 42.247.113.255
Convert CIDR to IP range
|
| Registry | APNIC |
| Network Name | NJR-CERNET |
Whois
inetnum: 42.244.0.0 - 42.247.255.255
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: 2020-09-03T09:16:28Z
source: APNIC
irt: IRT-CERNET-AP
address: Network Center,
address: FIT-3-220, 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: abuse@cernet.edu.cn was validated on 2026-09-10
mnt-by: MAINT-CERNET-AP
last-modified: 2026-09-10T07:51:56Z
source: APNIC
role: ABUSE CERNETAP
country: ZZ
address: Network Center,
address: FIT-3-220, 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 2026-09-10
abuse-mailbox: abuse@cernet.edu.cn
mnt-by: APNIC-ABUSE
last-modified: 2026-09-10T07:52:32Z
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
route: 42.246.0.0/15
descr: CERNET
origin: AS4538
mnt-by: MAINT-CERNET-AP
last-modified: 2017-03-14T04:00:08Z
source: APNICCIDR IP address subranges within 42.247.113.0/24 subnet
- 42.247.113.0
- 42.247.113.1
- 42.247.113.2
- 42.247.113.3
- 42.247.113.4
- 42.247.113.5
- 42.247.113.6
- 42.247.113.7
- 42.247.113.8
- 42.247.113.9
- 42.247.113.10
- 42.247.113.11
- 42.247.113.12
- 42.247.113.13
- 42.247.113.14
- 42.247.113.15
- 42.247.113.16
- 42.247.113.17
- 42.247.113.18
- 42.247.113.19
- 42.247.113.20
- 42.247.113.21
- 42.247.113.22
- 42.247.113.23
- 42.247.113.24
- 42.247.113.25
- 42.247.113.26
- 42.247.113.27
- 42.247.113.28
- 42.247.113.29
- 42.247.113.30
- 42.247.113.31
- 42.247.113.32
- 42.247.113.33
- 42.247.113.34
- 42.247.113.35
- 42.247.113.36
- 42.247.113.37
- 42.247.113.38
- 42.247.113.39
- 42.247.113.40
- 42.247.113.41
- 42.247.113.42
- 42.247.113.43
- 42.247.113.44
- 42.247.113.45
- 42.247.113.46
- 42.247.113.47
- 42.247.113.48
- 42.247.113.49
- 42.247.113.50
- 42.247.113.51
- 42.247.113.52
- 42.247.113.53
- 42.247.113.54
- 42.247.113.55
- 42.247.113.56
- 42.247.113.57
- 42.247.113.58
- 42.247.113.59
- 42.247.113.60
- 42.247.113.61
- 42.247.113.62
- 42.247.113.63
- 42.247.113.64
- 42.247.113.65
- 42.247.113.66
- 42.247.113.67
- 42.247.113.68
- 42.247.113.69
- 42.247.113.70
- 42.247.113.71
- 42.247.113.72
- 42.247.113.73
- 42.247.113.74
- 42.247.113.75
- 42.247.113.76
- 42.247.113.77
- 42.247.113.78
- 42.247.113.79
- 42.247.113.80
- 42.247.113.81
- 42.247.113.82
- 42.247.113.83
- 42.247.113.84
- 42.247.113.85
- 42.247.113.86
- 42.247.113.87
- 42.247.113.88
- 42.247.113.89
- 42.247.113.90
- 42.247.113.91
- 42.247.113.92
- 42.247.113.93
- 42.247.113.94
- 42.247.113.95
- 42.247.113.96
- 42.247.113.97
- 42.247.113.98
- 42.247.113.99
- 42.247.113.100
- 42.247.113.101
- 42.247.113.102
- 42.247.113.103
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- 42.247.113.111
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- 42.247.113.113
- 42.247.113.114
- 42.247.113.115
- 42.247.113.116
- 42.247.113.117
- 42.247.113.118
- 42.247.113.119
- 42.247.113.120
- 42.247.113.121
- 42.247.113.122
- 42.247.113.123
- 42.247.113.124
- 42.247.113.125
- 42.247.113.126
- 42.247.113.127
- 42.247.113.128
- 42.247.113.129
- 42.247.113.130
- 42.247.113.131
- 42.247.113.132
- 42.247.113.133
- 42.247.113.134
- 42.247.113.135
- 42.247.113.136
- 42.247.113.137
- 42.247.113.138
- 42.247.113.139
- 42.247.113.140
- 42.247.113.141
- 42.247.113.142
- 42.247.113.143
- 42.247.113.144
- 42.247.113.145
- 42.247.113.146
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- 42.247.113.150
- 42.247.113.151
- 42.247.113.152
- 42.247.113.153
- 42.247.113.154
- 42.247.113.155
- 42.247.113.156
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- 42.247.113.158
- 42.247.113.159
- 42.247.113.160
- 42.247.113.161
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- 42.247.113.163
- 42.247.113.164
- 42.247.113.165
- 42.247.113.166
- 42.247.113.167
- 42.247.113.168
- 42.247.113.169
- 42.247.113.170
- 42.247.113.171
- 42.247.113.172
- 42.247.113.173
- 42.247.113.174
- 42.247.113.175
- 42.247.113.176
- 42.247.113.177
- 42.247.113.178
- 42.247.113.179
- 42.247.113.180
- 42.247.113.181
- 42.247.113.182
- 42.247.113.183
- 42.247.113.184
- 42.247.113.185
- 42.247.113.186
- 42.247.113.187
- 42.247.113.188
- 42.247.113.189
- 42.247.113.190
- 42.247.113.191
- 42.247.113.192
- 42.247.113.193
- 42.247.113.194
- 42.247.113.195
- 42.247.113.196
- 42.247.113.197
- 42.247.113.198
- 42.247.113.199
- 42.247.113.200
- 42.247.113.201
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- 42.247.113.203
- 42.247.113.204
- 42.247.113.205
- 42.247.113.206
- 42.247.113.207
- 42.247.113.208
- 42.247.113.209
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- 42.247.113.219
- 42.247.113.220
- 42.247.113.221
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- 42.247.113.240
- 42.247.113.241
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- 42.247.113.243
- 42.247.113.244
- 42.247.113.245
- 42.247.113.246
- 42.247.113.247
- 42.247.113.248
- 42.247.113.249
- 42.247.113.250
- 42.247.113.251
- 42.247.113.252
- 42.247.113.253
- 42.247.113.254
- 42.247.113.255