% 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 '217.171.15.0 - 217.171.15.255'

% Abuse contact for '217.171.15.0 - 217.171.15.255' is 'abuse@rt.ru'

inetnum:        217.171.15.0 - 217.171.15.255
netname:        AEROCOM-VSE
descr:          Rosnet ( Russian Data Communication Company )
descr:          108, Profsoyuznaya Street
descr:          Moscow, Russia
country:        RU
admin-c:        OYG5-RIPE
tech-c:         OYG5-RIPE
status:         ASSIGNED PA
remarks:        INFRA-AW
remarks:        Please report spam/abuse notification to abuse@rosnet.ru
remarks:        Please report network issue to noc@rosnet.ru
mnt-by:         AEROCOM-MNT
created:        2007-10-04T07:48:09Z
last-modified:  2007-10-04T07:48:09Z
source:         RIPE # Filtered

person:         Oleg Y. Goldobin
address:        AEROCOM
address:        build. 108, Profsoyuznaya street,
address:        117437, Moscow
address:        RUSSIA
remarks:        phone: +7 095 9385015
phone:          +7 495 4247678
remarks:        fax-no: +7 095 9385124
fax-no:         +7 495 7813373
nic-hdl:        OYG5-RIPE
created:        2002-09-10T11:08:45Z
last-modified:  2020-06-04T10:25:01Z
source:         RIPE # Filtered
remarks:        modified for Russian phone area changes
mnt-by:         ROSTELECOM-MNT

% Information related to '217.171.0.0/20AS6863'

route:          217.171.0.0/20
descr:          JSC AEROCOM
origin:         AS6863
mnt-by:         ROSNET-NOC
created:        2008-01-14T06:43:42Z
last-modified:  2008-01-14T06:43:42Z
source:         RIPE # Filtered

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