% 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 'MAINT-ID-LINKNET'

mntner:         MAINT-ID-LINKNET
descr:          LINKNET
descr:          Internet Service Provider - Jakarta
country:        ID
admin-c:        RS188-AP
tech-c:         IR1-AP
upd-to:         noc@link.net.id
auth:           # Filtered
remarks:        spam and abuse report : abuse@link.net.id
mnt-by:         MAINT-ID-LINKNET
referral-by:    MNT-APJII-ID
last-modified:  2018-05-31T12:11:55Z
source:         APNIC

person:         Irvan Rianto
nic-hdl:        IR1-AP
e-mail:         irvan.rianto@kabelvision.com
address:        Citra Graha Bld. 4th floor
address:        Gatot Subroto Kav 35-36
address:        Jakarta - 12950
address:        Indonesia
phone:          +62-21-5278811
fax-no:         +62-21-5278833
country:        ID
mnt-by:         MAINT-ID-BM
last-modified:  2008-09-04T07:29:32Z
source:         APNIC

person:         Rizky Soema di Pradja
address:        Citra Graha Bld. 4th Fl.
address:        Jl. Gatot Subroto Kav. 35-36
address:        Jakarta - 12950
address:        Indonesia
country:        ID
phone:          +62-21-5278811
fax-no:         +62-21-5278833
e-mail:         rizky@kabelvision.com
nic-hdl:        RS188-AP
mnt-by:         MAINT-ID-BM
last-modified:  2008-09-04T07:29:20Z
source:         APNIC

% Information related to 'MAINT-ID-LINKNET'

mntner:         MAINT-ID-LINKNET
descr:          LINKNET
descr:          Internet Service Provider - Jakarta
country:        ID
admin-c:        RS188-AP
tech-c:         IR1-AP
upd-to:         noc@link.net.id
auth:           # Filtered
remarks:        spam and abuse report : abuse@link.net.id
mnt-by:         MAINT-ID-LINKNET
referral-by:    MNT-APJII-ID
last-modified:  2012-08-16T03:44:10Z
source:         IDNIC

person:         Irvan Rianto
nic-hdl:        IR1-AP
e-mail:         irvan.rianto@kabelvision.com
address:        Citra Graha Bld. 4th floor
address:        Gatot Subroto Kav 35-36
address:        Jakarta - 12950
address:        Indonesia
phone:          +62-21-5278811
fax-no:         +62-21-5278833
country:        ID
mnt-by:         MAINT-ID-BM
last-modified:  2008-09-04T07:29:32Z
source:         IDNIC

person:         Rizky Soema di Pradja
address:        Citra Graha Bld. 4th Fl.
address:        Jl. Gatot Subroto Kav. 35-36
address:        Jakarta - 12950
address:        Indonesia
country:        ID
phone:          +62-21-5278811
fax-no:         +62-21-5278833
e-mail:         rizky@kabelvision.com
nic-hdl:        RS188-AP
mnt-by:         MAINT-ID-BM
last-modified:  2008-09-04T07:29:20Z
source:         IDNIC

% This query was served by the APNIC Whois Service version 1.88.25 (WHOIS-AU2)

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