% 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 '193.42.123.0 - 193.42.123.255'

% Abuse contact for '193.42.123.0 - 193.42.123.255' is 'abuse@aogarant.ru'

inetnum:        193.42.123.0 - 193.42.123.255
netname:        RU-GARANTTELESETI-20210611
country:        RU
geoloc:         56.84494 53.21128
org:            ORG-GL457-RIPE
admin-c:        GL11981-RIPE
tech-c:         GL11981-RIPE
status:         ASSIGNED PA
mnt-by:         IP-RIPE
created:        2018-10-29T14:15:37Z
last-modified:  2023-06-28T09:43:47Z
source:         RIPE

organisation:   ORG-GL457-RIPE
org-name:       Garant-Teleseti LLC
country:        RU
org-type:       OTHER
address:        ul. Sovetskaya, d. 10A
address:        426057 Izhevsk
address:        Russia
abuse-c:        GL11981-RIPE
mnt-ref:        IP-RIPE
mnt-by:         IP-RIPE
created:        2021-06-11T10:42:49Z
last-modified:  2022-12-01T17:13:21Z
source:         RIPE # Filtered

role:           Garant-Teleseti LLC
address:        ul. Sovetskaya, d. 10A
address:        426057 Izhevsk
address:        Russia
abuse-mailbox:  abuse@aogarant.ru
phone:          +7 3412 958000
nic-hdl:        GL11981-RIPE
mnt-by:         IP-RIPE
created:        2021-06-11T10:42:49Z
last-modified:  2022-03-23T09:30:15Z
source:         RIPE # Filtered

% Information related to '193.42.123.0/24AS51488'

route:          193.42.123.0/24
origin:         AS51488
mnt-by:         IP-RIPE
created:        2021-06-15T06:02:51Z
last-modified:  2021-06-15T06:02:51Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.113.2 (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