% 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 '176.99.56.0 - 176.99.63.255'

% Abuse contact for '176.99.56.0 - 176.99.63.255' is 'abuse@ttk.ru'

inetnum:        176.99.56.0 - 176.99.63.255
netname:        RU-TRANSTELECOM
country:        RU
org:            ORG-CJSC19-RIPE
admin-c:        UTTK-RIPE
tech-c:         UTTK-RIPE
status:         ASSIGNED PI
mnt-by:         TRANSTELECOM-MNT
mnt-by:         RIPE-NCC-END-MNT
created:        2020-12-14T08:16:04Z
last-modified:  2020-12-14T08:16:04Z
source:         RIPE

organisation:   ORG-CJSC19-RIPE
org-name:       Joint Stock Company TransTeleCom
country:        RU
org-type:       LIR
address:        Vereyskaya street 29, building 134
address:        121357
address:        Moscow
address:        RUSSIAN FEDERATION
phone:          +74957846670
fax-no:         +74957846671
admin-c:        YL390-RIPE
admin-c:        MN12708-RIPE
abuse-c:        KTTK-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        TRANSTELECOM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         TRANSTELECOM-MNT
created:        2009-03-11T13:07:47Z
last-modified:  2023-11-20T12:20:41Z
source:         RIPE # Filtered

role:           Ural TTK IP Group
address:        CJSC "Ural-TransTeleCom"
address:        Technicheskaya Str. 18b
address:        Yekaterinburg, 620050
address:        Russian Federation
phone:          +7 343 3727272
fax-no:         +7 343 3728732
admin-c:        MK23673-RIPE
tech-c:         MK23673-RIPE
abuse-mailbox:  lir@ural.ttk.ru
nic-hdl:        UTTK-RIPE
mnt-by:         UMN-MNT
created:        2007-10-24T06:05:56Z
last-modified:  2020-08-03T06:20:24Z
source:         RIPE # Filtered

% Information related to '176.99.56.0/21AS59476'

route:          176.99.56.0/21
descr:          IPv4 Address Space in Tyumen
origin:         AS59476
mnt-by:         UMN-MNT
created:        2013-09-27T09:51:58Z
last-modified:  2013-09-27T09:51:58Z
source:         RIPE # Filtered

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