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

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to '5.53.24.0 - 5.53.31.255'

% Abuse contact for '5.53.24.0 - 5.53.31.255' is 'abuse@metro-set.ru'

inetnum:        5.53.24.0 - 5.53.31.255
netname:        METRO-SET-NET
descr:          Metroset Ltd.
country:        RU
admin-c:        SAM157-RIPE
tech-c:         SAM157-RIPE
status:         ASSIGNED PA
remarks:        INFRA-AW
mnt-by:         METRO-SET-MNT
created:        2012-08-27T11:11:43Z
last-modified:  2012-08-27T11:11:43Z
source:         RIPE

person:         Alexander Stepanov
address:        Neftyanikov str 64
                Nizhnevartovsk, Russia
phone:          +7 3466 407788
nic-hdl:        SAM157-RIPE
mnt-by:         SAM157-MNT
created:        2009-05-26T15:30:45Z
last-modified:  2009-05-26T15:42:48Z
source:         RIPE

% Information related to '5.53.28.0/22AS50923'

route:          5.53.28.0/22
descr:          Metroset Ltd. IPv4 Address Space
descr:          Nizhnevartovsk, HMAO-Yugra, Russia
origin:         AS50923
mnt-by:         METRO-SET-MNT
created:        2012-09-12T12:06:31Z
last-modified:  2012-09-12T12:06:31Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.114 (DEXTER)

Search for
IP address lookups			Miscellaneous queries
-l	1st level less specific		-i	Inverse attributes	None admin-c admin-c,tech-c,zone-c author cross-mnt cross-nfy local-as mbrs-by-ref member-of mnt-by mnt-lower mnt-nfy mnt-routes notify nserver origin person referral-by rev-srv sub-dom tech-c upd-to zone-c
-L	All less specific		-T	Object types	All as-block as-set aut-num domain filter-set inet-rtr inet6num inetnum irt key-cert mntner peering-set person role route route-set rtr-set
-m	1st level more specific
-M	All more specific		Query hints Include "AS" in front of an AS number. Example: AS4808 Include "-t" (template only) or "-v" (template and description) in front of an object name to view the template Example: -t inetnum
-x	Exact match only
-d	Associated reverse domain