% 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 '213.87.128.0 - 213.87.159.255'

% Abuse contact for '213.87.128.0 - 213.87.159.255' is 'abuse@mtu.ru'

inetnum:        213.87.128.0 - 213.87.159.255
netname:        MTSGPRS-3
descr:          Mobile subscribers pool
remarks:        INFRA-AW
country:        RU
admin-c:        MTU1-RIPE
tech-c:         MTU1-RIPE
admin-c:        MTSA
tech-c:         MTSN
status:         ASSIGNED PA
mnt-by:         MTSNET-MNT
mnt-by:         MTU-NOC
mnt-routes:     MTSNET-MNT
mnt-routes:     MTU-NOC
created:        2015-08-25T13:07:29Z
last-modified:  2015-08-25T13:07:29Z
source:         RIPE

role:           MTSNET Administration
address:        MTS PJSC
address:        4, Marksistskaya str., 109147 Moscow, Russia
remarks:        **************************************
remarks:        Contact addresses:
remarks:        routing & peering noc@mtu.ru
remarks:        spam & security abuse@mtu.ru
remarks:        mail postmaster@mtu.ru
remarks:        ddos reports ddos-reports@mtu.ru
remarks:        **************************************
mnt-by:         MTSNET-MNT
admin-c:        YUF-RIPE
tech-c:         YUF-RIPE
nic-hdl:        MTSA
created:        2004-04-03T10:05:17Z
last-modified:  2019-05-29T08:19:05Z
source:         RIPE # Filtered

role:           MTSNET NOC
address:        MTS PJSC
address:        4, Marksistskaya str.
address:        109147 Moscow, Russia
remarks:        abuse-mailbox: info@mts.ru
admin-c:        YUF-RIPE
tech-c:         YUF-RIPE
nic-hdl:        MTSN
created:        2004-04-03T09:50:46Z
last-modified:  2018-08-22T11:56:16Z
source:         RIPE # Filtered
mnt-by:         MTSNET-MNT

role:           MTS backbone NOC
address:        PJSC MTS / former CJSC Comstar-Direct
address:        Petrovsky blvd 12, bldg 3
address:        P.O. BOX 4711 127051
address:        Moscow, Russia
remarks:        **************************************
remarks:        Contact addresses:
remarks:        routing & peering noc@mtu.ru
remarks:        spam & security abuse@mtu.ru
remarks:        mail postmaster@mtu.ru
remarks:        ddos reports ddos-reports@mtu.ru
remarks:        **************************************
phone:          +7 495 721-34-99
fax-no:         +7 495 956-07-07
admin-c:        EDA-RIPE
admin-c:        RPS-RIPE
tech-c:         EDA-RIPE
nic-hdl:        MTU1-RIPE
mnt-by:         MTU-NOC
created:        2002-10-18T13:29:19Z
last-modified:  2022-04-08T13:50:05Z
source:         RIPE # Filtered

% Information related to '213.87.128.0/20AS8359'

route:          213.87.128.0/20
descr:          Mobile TeleSystems, PJSC, NAT for GPRS/3G
origin:         AS8359
mnt-by:         MTSNET-MNT
mnt-by:         MTU-NOC
created:        2015-08-05T16:10:22Z
last-modified:  2015-08-05T16:10:22Z
source:         RIPE # Filtered

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

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