% 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 'AS43075 - AS44168'

as-block:       AS43075 - AS44168
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:        2023-12-11T15:09:58Z
last-modified:  2023-12-11T15:09:58Z
source:         RIPE

% Information related to 'AS43991'

% Abuse contact for 'AS43991' is 'voronezh_telecom@mail.ru'

aut-num:        AS43991
as-name:        VORONEZHTELECOM-AS
org:            ORG-VTL19-RIPE
import:         from AS60840 accept ANY
export:         to AS60840 announce {185.144.60.0/22, 185.144.60.0/23, 185.144.62.0/23}
import:         from AS15930 accept ANY
export:         to AS15930 announce AS43991
admin-c:        SG14115-RIPE
tech-c:         SG14115-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SergeyG
created:        2016-12-08T13:22:15Z
last-modified:  2023-05-10T06:04:19Z
source:         RIPE

organisation:   ORG-VTL19-RIPE
org-name:       Voronezh Telecom LLC
country:        RU
org-type:       LIR
address:        Chebysheva, 5-203
address:        394028
address:        Voronezh
address:        RUSSIAN FEDERATION
phone:          +79042113514
admin-c:        SG14115-RIPE
tech-c:         SG14115-RIPE
abuse-c:        AR35661-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        SergeyG
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SergeyG
created:        2016-03-07T16:42:24Z
last-modified:  2024-01-17T08:11:44Z
source:         RIPE # Filtered

person:         Sergey Goncharov
address:        Kol'covskaya, 58a
address:        394030
address:        Voronezh
address:        RUSSIAN FEDERATION
phone:          +79601342718
nic-hdl:        SG14115-RIPE
mnt-by:         ru-voronezhtelecom-1-mnt
created:        2016-03-07T16:42:23Z
last-modified:  2016-03-22T11:47:05Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.112 (DEXTER)

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