% 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 '203.198.237.16 - 203.198.237.31'

% Abuse contact for '203.198.237.16 - 203.198.237.31' is 'noc@imsbiz.com'

inetnum:        203.198.237.16 - 203.198.237.31
netname:        mark-cle-hk
descr:          MARKS & CLERK
country:        HK
admin-c:        KC899-AP
tech-c:         TA29-AP
mnt-by:         MAINT-HK-IMS-CS
status:         ASSIGNED NON-PORTABLE
last-modified:  2008-09-04T07:02:23Z
source:         APNIC

role:           TECHNICAL ADMINISTRATORS
address:        i-Center
address:        Pacific Century CyberWorks
address:        12/F, CSL Tower
address:        322-324 Des Voeux Road Central
address:        Hong Kong
phone:          +852-28880046
country:        HK
e-mail:         pmaster@netvigator.com
admin-c:        TA28-AP
admin-c:        CL248-AP
tech-c:         TA28-AP
tech-c:         CL248-AP
nic-hdl:        TA29-AP
mnt-by:         MAINT-HK-IMS
last-modified:  2011-09-26T02:11:38Z
source:         APNIC

person:         KELVIN CHEUNG
address:        20/F CHINACHEM HOLLYWOOD CTR
address:        1-13 HOLLYWOOD ROAD
address:        CENTRAL DISTRICT HONG KONG
country:        HK
phone:          +852-25266345
fax-no:         +852-28100791
e-mail:         cs@imsbiz.com
nic-hdl:        KC899-AP
mnt-by:         MAINT-HK-IMS-CS
last-modified:  2008-09-04T07:34:40Z
source:         APNIC

% Information related to '203.198.237.0/24AS4760'

route:          203.198.237.0/24
origin:         AS4760
descr:          PCCW IMS Limited
                14/F, Lockhart Exchange Bldg
                No. 3 Hennessy Road
mnt-by:         MAINT-HK-IMS-CS
last-modified:  2020-07-15T06:30:50Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-AU4)