% 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://apps.db.ripe.net/docs/HTML-Terms-And-Conditions

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

% Information related to '91.231.16.0 - 91.231.17.255'

% Abuse contact for '91.231.16.0 - 91.231.17.255' is 'noc@rialcom.ru'

inetnum:        91.231.16.0 - 91.231.17.255
netname:        ORG-RL253-RIPE
country:        RU
org:            ORG-RL253-RIPE
admin-c:        YVK-RIPE
tech-c:         AVK777-RIPE
status:         ASSIGNED PI
mnt-by:         RCM-MNT
mnt-by:         RIPE-NCC-END-MNT
created:        2019-05-09T13:46:27Z
last-modified:  2020-11-16T17:42:20Z
source:         RIPE
sponsoring-org: ORG-RCJ1-RIPE

organisation:   ORG-RL253-RIPE
org-name:       RialCom Ltd.
country:        RU
org-type:       OTHER
address:        Lenina str., d, 19, room 2, micro district Klimovsk,
address:        142181, Russia, Podolsk, Moscow region
abuse-c:        FJ1701-RIPE
phone:          +7 495 5027946
fax-no:         +7 495 5027946
mnt-ref:        ROSNIIROS-MNT
mnt-by:         OOORIALCOM-MNT
created:        2016-08-11T14:32:48Z
last-modified:  2022-12-01T16:45:24Z
source:         RIPE # Filtered

person:         Andrey Gribov
nic-hdl:        AVK777-RIPE
mnt-by:         RCM-MNT
address:        Rial Com JSC.
address:        15 Sverdlova st.
address:        142100 Moscow reg. Podolsk
phone:          +7 (495) 544-00-04
fax-no:         +7 (495) 544-00-04
created:        2008-04-29T11:19:34Z
last-modified:  2016-07-19T07:13:40Z
source:         RIPE # Filtered

person:         Yuri V. Krivitsky
nic-hdl:        YVK-RIPE
mnt-by:         RCM-MNT
address:        Rial Com JSC.
address:        15 Sverdlova st.
address:        142100 Moscow reg. Podolsk
phone:          +7 (495) 502-79-46
phone:          +7 (4967) 69-24-01
fax-no:         +7 (495) 502-79-46
created:        2002-07-17T10:35:03Z
last-modified:  2009-11-04T15:33:26Z
source:         RIPE # Filtered

% Information related to '91.231.16.0/23AS48321'

route:          91.231.16.0/23
descr:          route object
origin:         AS48321
mnt-by:         MNT-KOgerer
created:        2011-10-11T09:47:31Z
last-modified:  2011-10-11T09:47:31Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.112.1 (SHETLAND)

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