% 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 'AS51357 - AS52223'

as-block:       AS51357 - AS52223
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2021-12-09T08:21:17Z
last-modified:  2021-12-09T08:21:17Z
source:         RIPE

% Information related to 'AS51812'

% Abuse contact for 'AS51812' is 'admin@arznet.ru'

aut-num:        AS51812
as-name:        KTVS-AS
org:            ORG-KL240-RIPE
import:         from AS31133 action pref=100; accept ANY
import:         from AS20485 action pref=100; accept ANY
export:         to AS31133 announce AS51812
export:         to AS20485 announce AS51812
admin-c:        KLN23-RIPE
tech-c:         KLN23-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-KTVS
created:        2010-11-09T16:51:42Z
last-modified:  2020-10-11T23:03:31Z
source:         RIPE
sponsoring-org: ORG-ATS13-RIPE

organisation:   ORG-KL240-RIPE
org-name:       KTVS Ltd.
country:        RU
org-type:       OTHER
phone:          +79503765050
address:        110 Lenina st., Arzamas, Nizhny Novgorod region, Russia
admin-c:        KLN23-RIPE
tech-c:         KLN23-RIPE
abuse-c:        KLN23-RIPE
mnt-ref:        RIPE-DB-MNT
mnt-ref:        MNT-KTVS
mnt-by:         RIPE-DB-MNT
mnt-by:         MNT-KTVS
created:        2018-03-26T14:14:40Z
last-modified:  2023-04-11T20:15:43Z
source:         RIPE # Filtered

role:           KTVS Ltd. NOC
address:        110 Lenina st., Arzamas, Nizhny Novgorod region, Russia
admin-c:        MVT53-RIPE
tech-c:         EGT8-RIPE
nic-hdl:        KLN23-RIPE
abuse-mailbox:  admin@arznet.ru
mnt-by:         RIPE-DB-MNT
created:        2018-03-26T14:14:40Z
last-modified:  2018-03-26T14:14:40Z
source:         RIPE # Filtered

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