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

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to '1.56.0.0 - 1.63.255.255'

inetnum:        1.56.0.0 - 1.63.255.255
netname:        UNICOM-HL
descr:          China Unicom Heilongjiang province network
descr:          China Unicom
country:        CN
admin-c:        CH1302-AP
tech-c:         BG63-AP
remarks:        service provider
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CNCGROUP
mnt-lower:      MAINT-CNCGROUP-HL
mnt-routes:     MAINT-CNCGROUP-RR
status:         ALLOCATED PORTABLE
remarks:        -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+
remarks:        This object can only be updated by APNIC hostmasters.
remarks:        To update this object, please contact APNIC
remarks:        hostmasters and include your organisation's account
remarks:        name in the subject line.
remarks:        -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+
mnt-irt:        IRT-CU-CN
changed:        hm-changed@apnic.net 20100528
source:         APNIC

irt:            IRT-CU-CN
address:        No.21,Jin-Rong Street
address:        Beijing,100140
address:        P.R.China
e-mail:         zhouxm@chinaunicom.cn
abuse-mailbox:  zhouxm@chinaunicom.cn
admin-c:        CH1302-AP
tech-c:         CH1302-AP
auth:           # Filtered
mnt-by:         MAINT-CNCGROUP
changed:        zhouxm@chinaunicom.cn 20101110
changed:        hm-changed@apnic.net 20101116
source:         APNIC

person:         Binghui Gao
nic-hdl:        BG63-AP
e-mail:         luanfuyu@vip.hl.cn
address:        Shuniu Building,No.155 Zhongshan road,Harbin,Heilongjiang
phone:          +86-451-82651467
fax-no:         +86-451-82651464
country:        CN
changed:        luanfuyu@vip.hl.cn 20100310
mnt-by:         MAINT-CNCGROUP-HL
source:         APNIC

person:         ChinaUnicom Hostmaster
nic-hdl:        CH1302-AP
e-mail:         abuse@cnc-noc.net
address:        No.21,Jin-Rong Street
address:        Beijing,100033
address:        P.R.China
phone:          +86-10-66259764
fax-no:         +86-10-66259764
country:        CN
changed:        abuse@cnc-noc.net 20090408
mnt-by:         MAINT-CNCGROUP
source:         APNIC

% Information related to '1.56.0.0/13AS4837'

route:          1.56.0.0/13
descr:          China Unicom Heilongjiang Province Network
country:        CN
origin:         AS4837
mnt-by:         MAINT-CNCGROUP-RR
changed:        abuse@cnc-noc.net 20100527
source:         APNIC

% This query was served by the APNIC Whois Service version 1.69.1-APNICv1r3 (WHOIS2)

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