% 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 'AS50893 - AS51355'

as-block:       AS50893 - AS51355
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:        2023-07-20T14:43:26Z
last-modified:  2023-07-20T14:43:26Z
source:         RIPE

% Information related to 'AS51119'

% Abuse contact for 'AS51119' is 'LIRadmin@tci.ir'

aut-num:        AS51119
as-name:        TCI
org:            ORG-ITCP1-RIPE
import:         from AS12880 accept ANY
import:         from AS49100 accept ANY
import:         from AS51074 accept ANY
import:         from AS42337 accept ANY
import:         from AS5627 accept ANY
export:         to AS12880 announce AS51119
export:         to AS49100 announce AS51119
export:         to AS201937 announce AS51119
export:         to AS39501 announce AS51119
export:         to AS15438 announce AS51119
export:         to AS42337 announce AS51119
export:         to AS51074 announce AS51119
export:         to AS12880 announce AS5627
export:         to AS42337 announce AS5627
export:         to AS51074 announce AS5627
import:         from AS60256 accept ANY
export:         to AS60256 announce AS51119
admin-c:        FK2720-RIPE
tech-c:         FK2720-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         TCI-RIPE-MNT
created:        2016-01-06T11:08:38Z
last-modified:  2018-11-15T13:06:19Z
source:         RIPE

organisation:   ORG-ITCP1-RIPE
org-name:       Iran Telecommunication Company PJS
country:        IR
org-type:       LIR
address:        No 43, Floor 7
address:        1969764913
address:        Tehran
address:        IRAN, ISLAMIC REPUBLIC OF
phone:          +982189797777
phone:          +989122186466
fax-no:         +982189796605
admin-c:        KZ1283-RIPE
admin-c:        NA6437-RIPE
tech-c:         DP15203-RIPE
abuse-c:        AR15666-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        TCI-RIPE-MNT
mnt-ref:        mnt-zahedi
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         TCI-RIPE-MNT
created:        2010-02-10T12:45:26Z
last-modified:  2020-12-16T13:06:59Z
source:         RIPE # Filtered

person:         farahnaz karami
address:        Vanak Square,Valiasr Ave, Daman Afshar St, No 43,1969764913, Tehran, Iran, Islamic Republic of
phone:          +982189796612
nic-hdl:        FK2720-RIPE
mnt-by:         TCI-RIPE-MNT
created:        2010-02-28T08:29:41Z
last-modified:  2017-10-30T22:08:24Z
source:         RIPE

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