% APNIC found the following authoritative answer from: whois.apnic.net

% [whois.apnic.net]
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% Information related to '139.176.0.0 - 139.176.255.255'

% Abuse contact for '139.176.0.0 - 139.176.255.255' is 'yujuan.cheng@net263.com'

inetnum:        139.176.0.0 - 139.176.255.255
netname:        NET263
descr:          Beijing 263 network group.
descr:          Beijing
country:        CN
admin-c:        ZH97-AP
tech-c:         LY261-AP
abuse-c:        AC1601-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-CNNIC-AP
mnt-irt:        IRT-NET263-CN
mnt-lower:      MAINT-CNNIC-AP
last-modified:  2023-11-28T00:57:05Z
source:         APNIC

irt:            IRT-NET263-CN
address:        16F,Jianda Buliding,No.14, Hepingli,Dongtucheng Road,Chaoyang District
e-mail:         yujuan.cheng@net263.com
abuse-mailbox:  yujuan.cheng@net263.com
admin-c:        ZH97-AP
tech-c:         ZH97-AP
auth:           # Filtered
mnt-by:         MAINT-CNNIC-AP
last-modified:  2025-11-18T00:35:08Z
source:         APNIC

role:           ABUSE CNNICCN
country:        ZZ
address:        Beijing, China
phone:          +000000000
e-mail:         ipas@cnnic.cn
admin-c:        IP50-AP
tech-c:         IP50-AP
nic-hdl:        AC1601-AP
remarks:        Generated from irt object IRT-CNNIC-CN
remarks:        ipas@cnnic.cn is invalid
abuse-mailbox:  ipas@cnnic.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-19T17:20:32Z
source:         APNIC

person:         Li Yujie
nic-hdl:        LY261-AP
e-mail:         noc@net263.com
address:        16th Floor,Jianda buliding,14 East tuceng Road,Chayang District,Beijing,P.R. CHINA
phone:          +86-010-84291263
fax-no:         +86-010-84291029
country:        CN
mnt-by:         MAINT-CN-263
last-modified:  2008-09-04T07:29:18Z
source:         APNIC

person:         Zhao haixia
nic-hdl:        ZH97-AP
e-mail:         noc@net263.com
address:        16th  floor,JianDa Buliding ,14 East Tucheng,Heping Li Chaoyang distric,Beijing , P.R.CHINA
phone:          +86-010-84291263
fax-no:         +86-010-84291029
country:        CN
mnt-by:         MAINT-CN-263
last-modified:  2008-09-04T07:29:18Z
source:         APNIC

% Information related to '139.176.0.0/16AS9803'

route:          139.176.0.0/16
origin:         AS9803
descr:          China Internet Network Information Center
                Floor1, Building No.1 C/-Chinese Academy of Sciences
                4, South 4th Street
                Haidian District,
mnt-by:         MAINT-CNNIC-AP
last-modified:  2025-10-13T02:19:45Z
source:         APNIC

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