% 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 '146.48.0.0 - 146.48.255.255'

% Abuse contact for '146.48.0.0 - 146.48.255.255' is 'hostmaster@iit.cnr.it'

inetnum:        146.48.0.0 - 146.48.255.255
netname:        CNR-PISA
descr:          Area della Ricerca di Pisa
country:        IT
org:            ORG-CNdR1-RIPE
admin-c:        AG193
admin-c:        DV73
tech-c:         DV73
tech-c:         AG193
status:         LEGACY
remarks:        Network of the CNR institutes in Pisa
remarks:        Multiple-lan
mnt-by:         RIPE-NCC-LEGACY-MNT
mnt-by:         CNR-MNT
mnt-lower:      CNR-MNT
mnt-routes:     CNR-MNT
mnt-domains:    CNR-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2017-01-18T09:59:40Z
source:         RIPE

organisation:   ORG-CNdR1-RIPE
org-name:       Consiglio Nazionale delle Ricerche
country:        IT
org-type:       LIR
address:        Via Giuseppe Moruzzi, 1
address:        I-56124
address:        Pisa
address:        ITALY
phone:          +39 050 3152079
fax-no:         +39 050 3152113
abuse-c:        AR15741-RIPE
admin-c:        DV73
mnt-ref:        CNR-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CNR-MNT
created:        2004-04-17T11:30:07Z
last-modified:  2022-08-25T10:59:03Z
source:         RIPE # Filtered

person:         Abraham Gebrehiwot
address:        c/o Istituto di Informatica e Telematica del CNR
address:        Via Giuseppe Moruzzi, 1
address:        I-56124 Pisa
address:        Italy
phone:          +39 050 3152079
fax-no:         +39 050 3152593
nic-hdl:        AG193
created:        2001-09-25T17:01:11Z
last-modified:  2015-04-14T13:20:58Z
source:         RIPE # Filtered
mnt-by:         CNR-MNT

person:         Daniele Vannozzi
address:        IIT - Istituto del CNR
address:        Via Giuseppe Moruzzi, 1
address:        I-56124 Pisa
address:        Italy
mnt-by:         CNR-MNT
phone:          +39 050 3139811
fax-no:         +39 050 542420
nic-hdl:        DV73
created:        2002-08-13T19:57:10Z
last-modified:  2010-12-11T11:08:40Z
source:         RIPE # Filtered

% Information related to '146.48.0.0/16AS137'

route:          146.48.0.0/16
descr:          CNR-PISA
descr:          Consiglio Nazionale delle Ricerche
descr:          Area di Ricerca di Pisa
remarks:        To notify abuse mailto: cert@garr.it
origin:         AS137
mnt-by:         GARR-LIR
created:        2002-08-19T16:32:29Z
last-modified:  2013-11-06T12:48:16Z
source:         RIPE

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