% 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 '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 'AS51721'

% Abuse contact for 'AS51721' is 'cachemaster@unicreditgroup.ru'

aut-num:        AS51721
as-name:        UCB
org:            ORG-UBC1-RIPE
import:         from AS3216 accept ANY
export:         to AS3216 announce AS51721
import:         from AS12389 accept ANY
export:         to AS12389 announce AS51721
import:         from AS197068 accept ANY
export:         to AS197068 announce AS51721
admin-c:        VP15624-RIPE
tech-c:         VP3478-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         UNICREDITBANK-MNT
created:        2010-10-25T16:05:03Z
last-modified:  2023-11-01T14:36:28Z
source:         RIPE
sponsoring-org: ORG-RRIf1-RIPE

organisation:   ORG-UBC1-RIPE
org-name:       UniCredit Bank JSC
country:        RU
org-type:       OTHER
address:        Prechistenskaya nab., 9
address:        119034 Moscow Russia
abuse-c:        UBC1-RIPE
mnt-ref:        ROSNIIROS-MNT
mnt-by:         UNICREDITBANK-MNT
created:        2010-08-25T08:49:22Z
last-modified:  2023-03-30T08:32:56Z
source:         RIPE # Filtered

person:         Vasily Patsin
address:        Prechistenskaya nab., 9
address:        119034 Moscow Russia
phone:          +74952587258
nic-hdl:        VP15624-RIPE
mnt-by:         UNICREDITBANK-MNT
created:        2023-03-30T08:42:54Z
last-modified:  2023-03-30T08:43:44Z
source:         RIPE # Filtered

person:         Vitaly Parochkin
address:        Prechistenskaya nab., 9
address:        119034 Moscow Russia
phone:          +74952587200
nic-hdl:        VP3478-RIPE
mnt-by:         UNICREDITBANK-MNT
created:        2010-08-25T06:38:59Z
last-modified:  2023-03-30T08:44:06Z
source:         RIPE # Filtered

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

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