% 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 'AS51596'

% Abuse contact for 'AS51596' is 'info@rusteko.ru'

aut-num:        AS51596
as-name:        RUSTEKO-AS
org:            ORG-RA253-RIPE
import:         from AS50473 action pref=300; accept ANY
import:         from AS57487 action pref=100; accept ANY
import:         from AS29226 action pref=200; accept ANY
import:         from AS49869 action pref=400; accept ANY
import:         from AS29076 action pref=500; accept ANY
export:         to AS50473 announce AS-RUSTEKO
export:         to AS57487 announce AS-RUSTEKO
export:         to AS29226 announce AS-RUSTEKO
export:         to AS49869 announce AS-RUSTEKO
export:         to AS29076 announce AS-RUSTEKO
admin-c:        ABRA-RIPE
tech-c:         MG8407-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         RUSTEKO-MNT
created:        2010-10-06T07:54:58Z
last-modified:  2024-03-06T08:28:04Z
source:         RIPE
sponsoring-org: ORG-LL38-RIPE

organisation:   ORG-RA253-RIPE
org-name:       RUSTEKO Ltd.
country:        RU
org-type:       OTHER
address:        117485 Moscow, Butlerova 12
abuse-c:        AR24168-RIPE
mnt-ref:        RUSTEKO-MNT
mnt-by:         RUSTEKO-MNT
created:        2010-09-16T11:20:12Z
last-modified:  2022-12-01T16:44:42Z
source:         RIPE # Filtered

person:         Danil A Abramenkov
address:        "Rusteko Ltd."
address:        Butlerova st. 12
address:        Moscow, RU
phone:          +7 (495) 772-9672
fax-no:         +7 (495) 772-9670
nic-hdl:        ABRA-RIPE
mnt-by:         RAMBLER-MNT
created:        2007-04-03T14:05:31Z
last-modified:  2007-04-03T14:05:31Z
source:         RIPE # Filtered

person:         Matvey Gorbachev
address:        Russia Moscow  Akademika Koroleva street  8k1
phone:          +7(916) 1480128
nic-hdl:        MG8407-RIPE
mnt-by:         DA1101-MNT
created:        2006-09-21T09:28:56Z
last-modified:  2011-03-18T08:06:53Z
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