IP subnet details

121.248.0.0/14

AS4538  — China Education And Research Network Center

Summary

Country
CN China
Domain cernet.net
Size 262,144
Registry APNIC
Network Name NJR-CERNET

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] was validated on 2023-12-14
mnt-by: MAINT-CERNET-AP
last-modified: 2023-12-14T03:44:39Z
source: APNIC

role: ABUSE CERNETAP
address: Network Research Center,
address: Main Bldg, Tsinghua Univ
address: Beijing 100084, China
country: ZZ
phone: +86-10-62784301
e-mail: [email protected]
admin-c: CER-AP
tech-c: CER-AP
nic-hdl: AC1685-AP
remarks: Generated from irt object IRT-CERNET-AP
remarks: [email protected] was validated on 2023-12-14
abuse-mailbox: [email protected]
mnt-by: APNIC-ABUSE
last-modified: 2023-12-14T03:44:51Z
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 IP address subranges within 121.248.0.0/14 subnet

  • 121.248.0.0/22
  • 121.248.4.0/22
  • 121.248.8.0/22
  • 121.248.12.0/22
  • 121.248.16.0/22
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  • 121.248.132.0/22
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  • 121.251.112.0/22
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  • 121.251.124.0/22
  • 121.251.128.0/22
  • 121.251.132.0/22
  • 121.251.136.0/22
  • 121.251.140.0/22
  • 121.251.144.0/22
  • 121.251.148.0/22
  • 121.251.152.0/22
  • 121.251.156.0/22
  • 121.251.160.0/22
  • 121.251.164.0/22
  • 121.251.168.0/22
  • 121.251.172.0/22
  • 121.251.176.0/22
  • 121.251.180.0/22
  • 121.251.184.0/22
  • 121.251.188.0/22
  • 121.251.192.0/22
  • 121.251.196.0/22
  • 121.251.200.0/22
  • 121.251.204.0/22
  • 121.251.208.0/22
  • 121.251.212.0/22
  • 121.251.216.0/22
  • 121.251.220.0/22
  • 121.251.224.0/22
  • 121.251.228.0/22
  • 121.251.232.0/22
  • 121.251.236.0/22
  • 121.251.240.0/22
  • 121.251.244.0/22
  • 121.251.248.0/22
  • 121.251.252.0/22

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