Summary

Country
CN China
Domain chinaunicom.com
Size 38,685,626,227,668,134,000,000,000
Registry APNIC
Network Name CU-CN

Whois

inet6num: 2408:8000::/20
netname: CU-CN
descr: China Unicom
descr: No.21, Jin-Rong Street
descr: Beijng 100033
country: CN
admin-c: CH1302-AP
tech-c: CH1302-AP
abuse-c: AC1718-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-CNCGROUP
mnt-routes: MAINT-CNCGROUP-RR
mnt-irt: IRT-CU-CN
last-modified: 2023-10-21T03:39:56Z
source: APNIC

irt: IRT-CU-CN
address: No.21,Financial Street
address: Beijing,100033
address: P.R.China
e-mail: [email protected]
abuse-mailbox: [email protected]
admin-c: CH1302-AP
tech-c: CH1302-AP
auth: # Filtered
remarks: [email protected] was validated on 2026-05-08
mnt-by: MAINT-CNCGROUP
last-modified: 2026-05-09T04:50:16Z
source: APNIC

role: ABUSE CUCN
country: ZZ
address: No.21,Financial Street
address: Beijing,100033
address: P.R.China
phone: +000000000
e-mail: [email protected]
admin-c: CH1302-AP
tech-c: CH1302-AP
nic-hdl: AC1718-AP
remarks: Generated from irt object IRT-CU-CN
remarks: [email protected] was validated on 2026-05-08
abuse-mailbox: [email protected]
mnt-by: APNIC-ABUSE
last-modified: 2026-05-08T01:31:32Z
source: APNIC

person: ChinaUnicom Hostmaster
nic-hdl: CH1302-AP
e-mail: [email protected]
address: No.21,Jin-Rong Street
address: Beijing,100033
address: P.R.China
phone: +86-10-66259764
fax-no: +86-10-66259764
country: CN
mnt-by: MAINT-CNCGROUP
last-modified: 2017-08-17T06:13:16Z
source: APNIC

route6: 2408:8000::/20
descr: China Unicom IPv6 Network
country: CN
origin: AS4837
mnt-by: MAINT-CNCGROUP-RR
last-modified: 2018-01-18T02:14:01Z
source: APNIC

CIDR IP address subranges within 2408:840d:c340::/43 subnet

  • 2408:840d:c340:0:0:0:0:0/51
  • 2408:840d:c340:2000:0:0:0:0/51
  • 2408:840d:c340:4000:0:0:0:0/51
  • 2408:840d:c340:6000:0:0:0:0/51
  • 2408:840d:c340:8000:0:0:0:0/51
  • 2408:840d:c340:a000:0:0:0:0/51
  • 2408:840d:c340:c000:0:0:0:0/51
  • 2408:840d:c340:e000:0:0:0:0/51
  • 2408:840d:c341:0:0:0:0:0/51
  • 2408:840d:c341:2000:0:0:0:0/51
  • 2408:840d:c341:4000:0:0:0:0/51
  • 2408:840d:c341:6000:0:0:0:0/51
  • 2408:840d:c341:8000:0:0:0:0/51
  • 2408:840d:c341:a000:0:0:0:0/51
  • 2408:840d:c341:c000:0:0:0:0/51
  • 2408:840d:c341:e000:0:0:0:0/51
  • 2408:840d:c342:0:0:0:0:0/51
  • 2408:840d:c342:2000:0:0:0:0/51
  • 2408:840d:c342:4000:0:0:0:0/51
  • 2408:840d:c342:6000:0:0:0:0/51
  • 2408:840d:c342:8000:0:0:0:0/51
  • 2408:840d:c342:a000:0:0:0:0/51
  • 2408:840d:c342:c000:0:0:0:0/51
  • 2408:840d:c342:e000:0:0:0:0/51
  • 2408:840d:c343:0:0:0:0:0/51
  • 2408:840d:c343:2000:0:0:0:0/51
  • 2408:840d:c343:4000:0:0:0:0/51
  • 2408:840d:c343:6000:0:0:0:0/51
  • 2408:840d:c343:8000:0:0:0:0/51
  • 2408:840d:c343:a000:0:0:0:0/51
  • 2408:840d:c343:c000:0:0:0:0/51
  • 2408:840d:c343:e000:0:0:0:0/51
  • 2408:840d:c344:0:0:0:0:0/51
  • 2408:840d:c344:2000:0:0:0:0/51
  • 2408:840d:c344:4000:0:0:0:0/51
  • 2408:840d:c344:6000:0:0:0:0/51
  • 2408:840d:c344:8000:0:0:0:0/51
  • 2408:840d:c344:a000:0:0:0:0/51
  • 2408:840d:c344:c000:0:0:0:0/51
  • 2408:840d:c344:e000:0:0:0:0/51
  • 2408:840d:c345:0:0:0:0:0/51
  • 2408:840d:c345:2000:0:0:0:0/51
  • 2408:840d:c345:4000:0:0:0:0/51
  • 2408:840d:c345:6000:0:0:0:0/51
  • 2408:840d:c345:8000:0:0:0:0/51
  • 2408:840d:c345:a000:0:0:0:0/51
  • 2408:840d:c345:c000:0:0:0:0/51
  • 2408:840d:c345:e000:0:0:0:0/51
  • 2408:840d:c346:0:0:0:0:0/51
  • 2408:840d:c346:2000:0:0:0:0/51
  • 2408:840d:c346:4000:0:0:0:0/51
  • 2408:840d:c346:6000:0:0:0:0/51
  • 2408:840d:c346:8000:0:0:0:0/51
  • 2408:840d:c346:a000:0:0:0:0/51
  • 2408:840d:c346:c000:0:0:0:0/51
  • 2408:840d:c346:e000:0:0:0:0/51
  • 2408:840d:c347:0:0:0:0:0/51
  • 2408:840d:c347:2000:0:0:0:0/51
  • 2408:840d:c347:4000:0:0:0:0/51
  • 2408:840d:c347:6000:0:0:0:0/51
  • 2408:840d:c347:8000:0:0:0:0/51
  • 2408:840d:c347:a000:0:0:0:0/51
  • 2408:840d:c347:c000:0:0:0:0/51
  • 2408:840d:c347:e000:0:0:0:0/51
  • 2408:840d:c348:0:0:0:0:0/51
  • 2408:840d:c348:2000:0:0:0:0/51
  • 2408:840d:c348:4000:0:0:0:0/51
  • 2408:840d:c348:6000:0:0:0:0/51
  • 2408:840d:c348:8000:0:0:0:0/51
  • 2408:840d:c348:a000:0:0:0:0/51
  • 2408:840d:c348:c000:0:0:0:0/51
  • 2408:840d:c348:e000:0:0:0:0/51
  • 2408:840d:c349:0:0:0:0:0/51
  • 2408:840d:c349:2000:0:0:0:0/51
  • 2408:840d:c349:4000:0:0:0:0/51
  • 2408:840d:c349:6000:0:0:0:0/51
  • 2408:840d:c349:8000:0:0:0:0/51
  • 2408:840d:c349:a000:0:0:0:0/51
  • 2408:840d:c349:c000:0:0:0:0/51
  • 2408:840d:c349:e000:0:0:0:0/51
  • 2408:840d:c34a:0:0:0:0:0/51
  • 2408:840d:c34a:2000:0:0:0:0/51
  • 2408:840d:c34a:4000:0:0:0:0/51
  • 2408:840d:c34a:6000:0:0:0:0/51
  • 2408:840d:c34a:8000:0:0:0:0/51
  • 2408:840d:c34a:a000:0:0:0:0/51
  • 2408:840d:c34a:c000:0:0:0:0/51
  • 2408:840d:c34a:e000:0:0:0:0/51
  • 2408:840d:c34b:0:0:0:0:0/51
  • 2408:840d:c34b:2000:0:0:0:0/51
  • 2408:840d:c34b:4000:0:0:0:0/51
  • 2408:840d:c34b:6000:0:0:0:0/51
  • 2408:840d:c34b:8000:0:0:0:0/51
  • 2408:840d:c34b:a000:0:0:0:0/51
  • 2408:840d:c34b:c000:0:0:0:0/51
  • 2408:840d:c34b:e000:0:0:0:0/51
  • 2408:840d:c34c:0:0:0:0:0/51
  • 2408:840d:c34c:2000:0:0:0:0/51
  • 2408:840d:c34c:4000:0:0:0:0/51
  • 2408:840d:c34c:6000:0:0:0:0/51
  • 2408:840d:c34c:8000:0:0:0:0/51
  • 2408:840d:c34c:a000:0:0:0:0/51
  • 2408:840d:c34c:c000:0:0:0:0/51
  • 2408:840d:c34c:e000:0:0:0:0/51
  • 2408:840d:c34d:0:0:0:0:0/51
  • 2408:840d:c34d:2000:0:0:0:0/51
  • 2408:840d:c34d:4000:0:0:0:0/51
  • 2408:840d:c34d:6000:0:0:0:0/51
  • 2408:840d:c34d:8000:0:0:0:0/51
  • 2408:840d:c34d:a000:0:0:0:0/51
  • 2408:840d:c34d:c000:0:0:0:0/51
  • 2408:840d:c34d:e000:0:0:0:0/51
  • 2408:840d:c34e:0:0:0:0:0/51
  • 2408:840d:c34e:2000:0:0:0:0/51
  • 2408:840d:c34e:4000:0:0:0:0/51
  • 2408:840d:c34e:6000:0:0:0:0/51
  • 2408:840d:c34e:8000:0:0:0:0/51
  • 2408:840d:c34e:a000:0:0:0:0/51
  • 2408:840d:c34e:c000:0:0:0:0/51
  • 2408:840d:c34e:e000:0:0:0:0/51
  • 2408:840d:c34f:0:0:0:0:0/51
  • 2408:840d:c34f:2000:0:0:0:0/51
  • 2408:840d:c34f:4000:0:0:0:0/51
  • 2408:840d:c34f:6000:0:0:0:0/51
  • 2408:840d:c34f:8000:0:0:0:0/51
  • 2408:840d:c34f:a000:0:0:0:0/51
  • 2408:840d:c34f:c000:0:0:0:0/51
  • 2408:840d:c34f:e000:0:0:0:0/51
  • 2408:840d:c350:0:0:0:0:0/51
  • 2408:840d:c350:2000:0:0:0:0/51
  • 2408:840d:c350:4000:0:0:0:0/51
  • 2408:840d:c350:6000:0:0:0:0/51
  • 2408:840d:c350:8000:0:0:0:0/51
  • 2408:840d:c350:a000:0:0:0:0/51
  • 2408:840d:c350:c000:0:0:0:0/51
  • 2408:840d:c350:e000:0:0:0:0/51
  • 2408:840d:c351:0:0:0:0:0/51
  • 2408:840d:c351:2000:0:0:0:0/51
  • 2408:840d:c351:4000:0:0:0:0/51
  • 2408:840d:c351:6000:0:0:0:0/51
  • 2408:840d:c351:8000:0:0:0:0/51
  • 2408:840d:c351:a000:0:0:0:0/51
  • 2408:840d:c351:c000:0:0:0:0/51
  • 2408:840d:c351:e000:0:0:0:0/51
  • 2408:840d:c352:0:0:0:0:0/51
  • 2408:840d:c352:2000:0:0:0:0/51
  • 2408:840d:c352:4000:0:0:0:0/51
  • 2408:840d:c352:6000:0:0:0:0/51
  • 2408:840d:c352:8000:0:0:0:0/51
  • 2408:840d:c352:a000:0:0:0:0/51
  • 2408:840d:c352:c000:0:0:0:0/51
  • 2408:840d:c352:e000:0:0:0:0/51
  • 2408:840d:c353:0:0:0:0:0/51
  • 2408:840d:c353:2000:0:0:0:0/51
  • 2408:840d:c353:4000:0:0:0:0/51
  • 2408:840d:c353:6000:0:0:0:0/51
  • 2408:840d:c353:8000:0:0:0:0/51
  • 2408:840d:c353:a000:0:0:0:0/51
  • 2408:840d:c353:c000:0:0:0:0/51
  • 2408:840d:c353:e000:0:0:0:0/51
  • 2408:840d:c354:0:0:0:0:0/51
  • 2408:840d:c354:2000:0:0:0:0/51
  • 2408:840d:c354:4000:0:0:0:0/51
  • 2408:840d:c354:6000:0:0:0:0/51
  • 2408:840d:c354:8000:0:0:0:0/51
  • 2408:840d:c354:a000:0:0:0:0/51
  • 2408:840d:c354:c000:0:0:0:0/51
  • 2408:840d:c354:e000:0:0:0:0/51
  • 2408:840d:c355:0:0:0:0:0/51
  • 2408:840d:c355:2000:0:0:0:0/51
  • 2408:840d:c355:4000:0:0:0:0/51
  • 2408:840d:c355:6000:0:0:0:0/51
  • 2408:840d:c355:8000:0:0:0:0/51
  • 2408:840d:c355:a000:0:0:0:0/51
  • 2408:840d:c355:c000:0:0:0:0/51
  • 2408:840d:c355:e000:0:0:0:0/51
  • 2408:840d:c356:0:0:0:0:0/51
  • 2408:840d:c356:2000:0:0:0:0/51
  • 2408:840d:c356:4000:0:0:0:0/51
  • 2408:840d:c356:6000:0:0:0:0/51
  • 2408:840d:c356:8000:0:0:0:0/51
  • 2408:840d:c356:a000:0:0:0:0/51
  • 2408:840d:c356:c000:0:0:0:0/51
  • 2408:840d:c356:e000:0:0:0:0/51
  • 2408:840d:c357:0:0:0:0:0/51
  • 2408:840d:c357:2000:0:0:0:0/51
  • 2408:840d:c357:4000:0:0:0:0/51
  • 2408:840d:c357:6000:0:0:0:0/51
  • 2408:840d:c357:8000:0:0:0:0/51
  • 2408:840d:c357:a000:0:0:0:0/51
  • 2408:840d:c357:c000:0:0:0:0/51
  • 2408:840d:c357:e000:0:0:0:0/51
  • 2408:840d:c358:0:0:0:0:0/51
  • 2408:840d:c358:2000:0:0:0:0/51
  • 2408:840d:c358:4000:0:0:0:0/51
  • 2408:840d:c358:6000:0:0:0:0/51
  • 2408:840d:c358:8000:0:0:0:0/51
  • 2408:840d:c358:a000:0:0:0:0/51
  • 2408:840d:c358:c000:0:0:0:0/51
  • 2408:840d:c358:e000:0:0:0:0/51
  • 2408:840d:c359:0:0:0:0:0/51
  • 2408:840d:c359:2000:0:0:0:0/51
  • 2408:840d:c359:4000:0:0:0:0/51
  • 2408:840d:c359:6000:0:0:0:0/51
  • 2408:840d:c359:8000:0:0:0:0/51
  • 2408:840d:c359:a000:0:0:0:0/51
  • 2408:840d:c359:c000:0:0:0:0/51
  • 2408:840d:c359:e000:0:0:0:0/51
  • 2408:840d:c35a:0:0:0:0:0/51
  • 2408:840d:c35a:2000:0:0:0:0/51
  • 2408:840d:c35a:4000:0:0:0:0/51
  • 2408:840d:c35a:6000:0:0:0:0/51
  • 2408:840d:c35a:8000:0:0:0:0/51
  • 2408:840d:c35a:a000:0:0:0:0/51
  • 2408:840d:c35a:c000:0:0:0:0/51
  • 2408:840d:c35a:e000:0:0:0:0/51
  • 2408:840d:c35b:0:0:0:0:0/51
  • 2408:840d:c35b:2000:0:0:0:0/51
  • 2408:840d:c35b:4000:0:0:0:0/51
  • 2408:840d:c35b:6000:0:0:0:0/51
  • 2408:840d:c35b:8000:0:0:0:0/51
  • 2408:840d:c35b:a000:0:0:0:0/51
  • 2408:840d:c35b:c000:0:0:0:0/51
  • 2408:840d:c35b:e000:0:0:0:0/51
  • 2408:840d:c35c:0:0:0:0:0/51
  • 2408:840d:c35c:2000:0:0:0:0/51
  • 2408:840d:c35c:4000:0:0:0:0/51
  • 2408:840d:c35c:6000:0:0:0:0/51
  • 2408:840d:c35c:8000:0:0:0:0/51
  • 2408:840d:c35c:a000:0:0:0:0/51
  • 2408:840d:c35c:c000:0:0:0:0/51
  • 2408:840d:c35c:e000:0:0:0:0/51
  • 2408:840d:c35d:0:0:0:0:0/51
  • 2408:840d:c35d:2000:0:0:0:0/51
  • 2408:840d:c35d:4000:0:0:0:0/51
  • 2408:840d:c35d:6000:0:0:0:0/51
  • 2408:840d:c35d:8000:0:0:0:0/51
  • 2408:840d:c35d:a000:0:0:0:0/51
  • 2408:840d:c35d:c000:0:0:0:0/51
  • 2408:840d:c35d:e000:0:0:0:0/51
  • 2408:840d:c35e:0:0:0:0:0/51
  • 2408:840d:c35e:2000:0:0:0:0/51
  • 2408:840d:c35e:4000:0:0:0:0/51
  • 2408:840d:c35e:6000:0:0:0:0/51
  • 2408:840d:c35e:8000:0:0:0:0/51
  • 2408:840d:c35e:a000:0:0:0:0/51
  • 2408:840d:c35e:c000:0:0:0:0/51
  • 2408:840d:c35e:e000:0:0:0:0/51
  • 2408:840d:c35f:0:0:0:0:0/51
  • 2408:840d:c35f:2000:0:0:0:0/51
  • 2408:840d:c35f:4000:0:0:0:0/51
  • 2408:840d:c35f:6000:0:0:0:0/51
  • 2408:840d:c35f:8000:0:0:0:0/51
  • 2408:840d:c35f:a000:0:0:0:0/51
  • 2408:840d:c35f:c000:0:0:0:0/51
  • 2408:840d:c35f:e000:0:0:0:0/51

Get started with 100,000 free lookups: sign up