IP subnet details

240c:c017::/32

AS4538  — China Education And Research Network Center

Summary

Country
CN China
Domain cernic.net
Size 79,228,162,514,264,340,000,000,000,000
Registry APNIC
Network Name CERNET

Whois

inet6num: 240c:c000::/20
netname: CERNET
descr: China Education and Research Network
descr: Tsinghua University
country: CN
org: ORG-CEAR1-AP
admin-c: CER-AP
tech-c: CER-AP
abuse-c: AC1685-AP
status: ALLOCATED PORTABLE
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: 2023-08-28T06:40:49Z
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 was validated on 2025-08-15
mnt-by: MAINT-CERNET-AP
last-modified: 2025-11-18T00:26:28Z
source: APNIC

organisation: ORG-CEAR1-AP
org-name: China Education and Research Network (CERNET)
country: CN
address: FIT 3-220,
address: Tsinghua University
phone: +86-10-62785983
fax-no: +86-10-62785933
e-mail: hostmaster@cernic.net
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2018-09-13T12:56:34Z
source: APNIC

role: ABUSE CERNETAP
country: ZZ
address: Network Research Center,
address: Main Bldg, 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 2025-08-15
abuse-mailbox: abuse@cernet.edu.cn
mnt-by: APNIC-ABUSE
last-modified: 2025-08-15T09:38:28Z
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

route6: 240c:c000::/20
descr: CERNET
origin: AS23910
mnt-by: MAINT-CERNET-AP
last-modified: 2020-08-31T01:22:02Z
source: APNIC

CIDR IP address subranges within 240c:c017::/32 subnet

  • 240c:c017:0:0:0:0:0:0/40
  • 240c:c017:100:0:0:0:0:0/40
  • 240c:c017:200:0:0:0:0:0/40
  • 240c:c017:300:0:0:0:0:0/40
  • 240c:c017:400:0:0:0:0:0/40
  • 240c:c017:500:0:0:0:0:0/40
  • 240c:c017:600:0:0:0:0:0/40
  • 240c:c017:700:0:0:0:0:0/40
  • 240c:c017:800:0:0:0:0:0/40
  • 240c:c017:900:0:0:0:0:0/40
  • 240c:c017:a00:0:0:0:0:0/40
  • 240c:c017:b00:0:0:0:0:0/40
  • 240c:c017:c00:0:0:0:0:0/40
  • 240c:c017:d00:0:0:0:0:0/40
  • 240c:c017:e00:0:0:0:0:0/40
  • 240c:c017:f00:0:0:0:0:0/40
  • 240c:c017:1000:0:0:0:0:0/40
  • 240c:c017:1100:0:0:0:0:0/40
  • 240c:c017:1200:0:0:0:0:0/40
  • 240c:c017:1300:0:0:0:0:0/40
  • 240c:c017:1400:0:0:0:0:0/40
  • 240c:c017:1500:0:0:0:0:0/40
  • 240c:c017:1600:0:0:0:0:0/40
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  • 240c:c017:1800:0:0:0:0:0/40
  • 240c:c017:1900:0:0:0:0:0/40
  • 240c:c017:1a00:0:0:0:0:0/40
  • 240c:c017:1b00:0:0:0:0:0/40
  • 240c:c017:1c00:0:0:0:0:0/40
  • 240c:c017:1d00:0:0:0:0:0/40
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  • 240c:c017:2000:0:0:0:0:0/40
  • 240c:c017:2100:0:0:0:0:0/40
  • 240c:c017:2200:0:0:0:0:0/40
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  • 240c:c017:2400:0:0:0:0:0/40
  • 240c:c017:2500:0:0:0:0:0/40
  • 240c:c017:2600:0:0:0:0:0/40
  • 240c:c017:2700:0:0:0:0:0/40
  • 240c:c017:2800:0:0:0:0:0/40
  • 240c:c017:2900:0:0:0:0:0/40
  • 240c:c017:2a00:0:0:0:0:0/40
  • 240c:c017:2b00:0:0:0:0:0/40
  • 240c:c017:2c00:0:0:0:0:0/40
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  • 240c:c017:2f00:0:0:0:0:0/40
  • 240c:c017:3000:0:0:0:0:0/40
  • 240c:c017:3100:0:0:0:0:0/40
  • 240c:c017:3200:0:0:0:0:0/40
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  • 240c:c017:3900:0:0:0:0:0/40
  • 240c:c017:3a00:0:0:0:0:0/40
  • 240c:c017:3b00:0:0:0:0:0/40
  • 240c:c017:3c00:0:0:0:0:0/40
  • 240c:c017:3d00:0:0:0:0:0/40
  • 240c:c017:3e00:0:0:0:0:0/40
  • 240c:c017:3f00:0:0:0:0:0/40
  • 240c:c017:4000:0:0:0:0:0/40
  • 240c:c017:4100:0:0:0:0:0/40
  • 240c:c017:4200:0:0:0:0:0/40
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  • 240c:c017:4f00:0:0:0:0:0/40
  • 240c:c017:5000:0:0:0:0:0/40
  • 240c:c017:5100:0:0:0:0:0/40
  • 240c:c017:5200:0:0:0:0:0/40
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  • 240c:c017:5e00:0:0:0:0:0/40
  • 240c:c017:5f00:0:0:0:0:0/40
  • 240c:c017:6000:0:0:0:0:0/40
  • 240c:c017:6100:0:0:0:0:0/40
  • 240c:c017:6200:0:0:0:0:0/40
  • 240c:c017:6300:0:0:0:0:0/40
  • 240c:c017:6400:0:0:0:0:0/40
  • 240c:c017:6500:0:0:0:0:0/40
  • 240c:c017:6600:0:0:0:0:0/40
  • 240c:c017:6700:0:0:0:0:0/40
  • 240c:c017:6800:0:0:0:0:0/40
  • 240c:c017:6900:0:0:0:0:0/40
  • 240c:c017:6a00:0:0:0:0:0/40
  • 240c:c017:6b00:0:0:0:0:0/40
  • 240c:c017:6c00:0:0:0:0:0/40
  • 240c:c017:6d00:0:0:0:0:0/40
  • 240c:c017:6e00:0:0:0:0:0/40
  • 240c:c017:6f00:0:0:0:0:0/40
  • 240c:c017:7000:0:0:0:0:0/40
  • 240c:c017:7100:0:0:0:0:0/40
  • 240c:c017:7200:0:0:0:0:0/40
  • 240c:c017:7300:0:0:0:0:0/40
  • 240c:c017:7400:0:0:0:0:0/40
  • 240c:c017:7500:0:0:0:0:0/40
  • 240c:c017:7600:0:0:0:0:0/40
  • 240c:c017:7700:0:0:0:0:0/40
  • 240c:c017:7800:0:0:0:0:0/40
  • 240c:c017:7900:0:0:0:0:0/40
  • 240c:c017:7a00:0:0:0:0:0/40
  • 240c:c017:7b00:0:0:0:0:0/40
  • 240c:c017:7c00:0:0:0:0:0/40
  • 240c:c017:7d00:0:0:0:0:0/40
  • 240c:c017:7e00:0:0:0:0:0/40
  • 240c:c017:7f00:0:0:0:0:0/40
  • 240c:c017:8000:0:0:0:0:0/40
  • 240c:c017:8100:0:0:0:0:0/40
  • 240c:c017:8200:0:0:0:0:0/40
  • 240c:c017:8300:0:0:0:0:0/40
  • 240c:c017:8400:0:0:0:0:0/40
  • 240c:c017:8500:0:0:0:0:0/40
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  • 240c:c017:8700:0:0:0:0:0/40
  • 240c:c017:8800:0:0:0:0:0/40
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  • 240c:c017:8a00:0:0:0:0:0/40
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  • 240c:c017:8c00:0:0:0:0:0/40
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  • 240c:c017:9000:0:0:0:0:0/40
  • 240c:c017:9100:0:0:0:0:0/40
  • 240c:c017:9200:0:0:0:0:0/40
  • 240c:c017:9300:0:0:0:0:0/40
  • 240c:c017:9400:0:0:0:0:0/40
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  • 240c:c017:9600:0:0:0:0:0/40
  • 240c:c017:9700:0:0:0:0:0/40
  • 240c:c017:9800:0:0:0:0:0/40
  • 240c:c017:9900:0:0:0:0:0/40
  • 240c:c017:9a00:0:0:0:0:0/40
  • 240c:c017:9b00:0:0:0:0:0/40
  • 240c:c017:9c00:0:0:0:0:0/40
  • 240c:c017:9d00:0:0:0:0:0/40
  • 240c:c017:9e00:0:0:0:0:0/40
  • 240c:c017:9f00:0:0:0:0:0/40
  • 240c:c017:a000:0:0:0:0:0/40
  • 240c:c017:a100:0:0:0:0:0/40
  • 240c:c017:a200:0:0:0:0:0/40
  • 240c:c017:a300:0:0:0:0:0/40
  • 240c:c017:a400:0:0:0:0:0/40
  • 240c:c017:a500:0:0:0:0:0/40
  • 240c:c017:a600:0:0:0:0:0/40
  • 240c:c017:a700:0:0:0:0:0/40
  • 240c:c017:a800:0:0:0:0:0/40
  • 240c:c017:a900:0:0:0:0:0/40
  • 240c:c017:aa00:0:0:0:0:0/40
  • 240c:c017:ab00:0:0:0:0:0/40
  • 240c:c017:ac00:0:0:0:0:0/40
  • 240c:c017:ad00:0:0:0:0:0/40
  • 240c:c017:ae00:0:0:0:0:0/40
  • 240c:c017:af00:0:0:0:0:0/40
  • 240c:c017:b000:0:0:0:0:0/40
  • 240c:c017:b100:0:0:0:0:0/40
  • 240c:c017:b200:0:0:0:0:0/40
  • 240c:c017:b300:0:0:0:0:0/40
  • 240c:c017:b400:0:0:0:0:0/40
  • 240c:c017:b500:0:0:0:0:0/40
  • 240c:c017:b600:0:0:0:0:0/40
  • 240c:c017:b700:0:0:0:0:0/40
  • 240c:c017:b800:0:0:0:0:0/40
  • 240c:c017:b900:0:0:0:0:0/40
  • 240c:c017:ba00:0:0:0:0:0/40
  • 240c:c017:bb00:0:0:0:0:0/40
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  • 240c:c017:be00:0:0:0:0:0/40
  • 240c:c017:bf00:0:0:0:0:0/40
  • 240c:c017:c000:0:0:0:0:0/40
  • 240c:c017:c100:0:0:0:0:0/40
  • 240c:c017:c200:0:0:0:0:0/40
  • 240c:c017:c300:0:0:0:0:0/40
  • 240c:c017:c400:0:0:0:0:0/40
  • 240c:c017:c500:0:0:0:0:0/40
  • 240c:c017:c600:0:0:0:0:0/40
  • 240c:c017:c700:0:0:0:0:0/40
  • 240c:c017:c800:0:0:0:0:0/40
  • 240c:c017:c900:0:0:0:0:0/40
  • 240c:c017:ca00:0:0:0:0:0/40
  • 240c:c017:cb00:0:0:0:0:0/40
  • 240c:c017:cc00:0:0:0:0:0/40
  • 240c:c017:cd00:0:0:0:0:0/40
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  • 240c:c017:d000:0:0:0:0:0/40
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  • 240c:c017:d500:0:0:0:0:0/40
  • 240c:c017:d600:0:0:0:0:0/40
  • 240c:c017:d700:0:0:0:0:0/40
  • 240c:c017:d800:0:0:0:0:0/40
  • 240c:c017:d900:0:0:0:0:0/40
  • 240c:c017:da00:0:0:0:0:0/40
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  • 240c:c017:e100:0:0:0:0:0/40
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  • 240c:c017:e300:0:0:0:0:0/40
  • 240c:c017:e400:0:0:0:0:0/40
  • 240c:c017:e500:0:0:0:0:0/40
  • 240c:c017:e600:0:0:0:0:0/40
  • 240c:c017:e700:0:0:0:0:0/40
  • 240c:c017:e800:0:0:0:0:0/40
  • 240c:c017:e900:0:0:0:0:0/40
  • 240c:c017:ea00:0:0:0:0:0/40
  • 240c:c017:eb00:0:0:0:0:0/40
  • 240c:c017:ec00:0:0:0:0:0/40
  • 240c:c017:ed00:0:0:0:0:0/40
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  • 240c:c017:ef00:0:0:0:0:0/40
  • 240c:c017:f000:0:0:0:0:0/40
  • 240c:c017:f100:0:0:0:0:0/40
  • 240c:c017:f200:0:0:0:0:0/40
  • 240c:c017:f300:0:0:0:0:0/40
  • 240c:c017:f400:0:0:0:0:0/40
  • 240c:c017:f500:0:0:0:0:0/40
  • 240c:c017:f600:0:0:0:0:0/40
  • 240c:c017:f700:0:0:0:0:0/40
  • 240c:c017:f800:0:0:0:0:0/40
  • 240c:c017:f900:0:0:0:0:0/40
  • 240c:c017:fa00:0:0:0:0:0/40
  • 240c:c017:fb00:0:0:0:0:0/40
  • 240c:c017:fc00:0:0:0:0:0/40
  • 240c:c017:fd00:0:0:0:0:0/40
  • 240c:c017:fe00:0:0:0:0:0/40
  • 240c:c017:ff00:0:0:0:0:0/40

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