% 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 '31.135.64.0 - 31.135.95.255'

% Abuse contact for '31.135.64.0 - 31.135.95.255' is 'abuse@intek-m.ru'

inetnum:        31.135.64.0 - 31.135.95.255
netname:        INTEKM-NET
descr:          Mytischi, Russia
country:        RU
org:            ORG-IL113-RIPE
admin-c:        BOLD1-RIPE
tech-c:         BOLD1-RIPE
status:         ASSIGNED PI
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         INTEKM-MNT
mnt-routes:     INTEKM-MNT
mnt-domains:    INTEKM-MNT
created:        2011-06-24T07:25:33Z
last-modified:  2016-04-14T10:50:13Z
source:         RIPE # Filtered
sponsoring-org: ORG-Vs35-RIPE

organisation:   ORG-IL113-RIPE
org-name:       Intek-M LLC
country:        RU
org-type:       OTHER
address:        7, 1-Krasnoarmeysky pereulok St.
address:        Mytischi, 141014
address:        Russia
phone:          +74956642840
phone:          +74957418125
remarks:        http://intek-m.ru
abuse-c:        AR30502-RIPE
mnt-ref:        MNT-INTERLAN
mnt-by:         INTEKM-MNT
mnt-by:         MNT-INTERLAN
created:        2007-10-09T13:37:16Z
last-modified:  2023-12-18T14:48:40Z
source:         RIPE # Filtered

person:         Roman Boldin
address:        Intek-M LLC
address:        7, 1-Krasnoarmeysky pereulok St.
address:        Mytischi, 141014
address:        Russia
phone:          +74956642840
phone:          +74957418125
nic-hdl:        BOLD1-RIPE
mnt-by:         INTEKM-MNT
created:        2011-06-15T13:56:05Z
last-modified:  2023-12-18T12:33:02Z
source:         RIPE

% Information related to '31.135.64.0/21AS43865'

route:          31.135.64.0/21
origin:         AS43865
mnt-by:         INTEKM-MNT
created:        2016-12-09T11:24:13Z
last-modified:  2016-12-09T11:24:13Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.114 (ABERDEEN)

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