192.189.51.0/24

NetRange:       192.189.51.0 - 192.189.52.255
CIDR:           192.189.51.0/24, 192.189.52.0/24
NetName:        RIPE-ERX-192-189-51-0
NetHandle:      NET-192-189-51-0-1
Parent:         NET192 (NET-192-0-0-0-0)
NetType:        Early Registrations, Transferred to RIPE NCC
OriginAS:       
Organization:   RIPE Network Coordination Centre (RIPE)
RegDate:        2005-02-28
Updated:        2005-02-28
Comment:        These addresses have been further assigned to users in
Comment:        the RIPE NCC region.  Contact information can be found in
Comment:        the RIPE database at http://www.ripe.net/whois
Ref:            https://rdap.arin.net/registry/ip/192.189.51.0

ResourceLink:  https://apps.db.ripe.net/search/query.html
ResourceLink:  whois.ripe.net

OrgName:        RIPE Network Coordination Centre
OrgId:          RIPE
Address:        P.O. Box 10096
City:           Amsterdam
StateProv:      
PostalCode:     1001EB
Country:        NL
RegDate:        
Updated:        2013-07-29
Ref:            https://rdap.arin.net/registry/entity/RIPE

ReferralServer:  whois://whois.ripe.net
ResourceLink:  https://apps.db.ripe.net/search/query.html

OrgAbuseHandle: ABUSE3850-ARIN
OrgAbuseName:   Abuse Contact
OrgAbusePhone:  +31205354444 
OrgAbuseEmail:  abuse@ripe.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE3850-ARIN

OrgTechHandle: RNO29-ARIN
OrgTechName:   RIPE NCC Operations
OrgTechPhone:  +31 20 535 4444 
OrgTechEmail:  hostmaster@ripe.net
OrgTechRef:    https://rdap.arin.net/registry/entity/RNO29-ARIN

Found a referral to whois.ripe.net.

inetnum:        192.189.51.0 - 192.189.51.255
netname:        HBLVA-EDV
descr:          HTBLVA Textil Wien V
descr:          Spengergasse 20
descr:          1050 Wien
country:        AT
admin-c:        RP1126
admin-c:        RP13871-RIPE
tech-c:         RP13871-RIPE
status:         LEGACY
mnt-by:         ACONET-LIR-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2018-07-02T10:09:26Z
source:         RIPE

person:         Raphaela Psihoda
address:        Bundesministerium fuer Bildung
address:        Abteilung V/2
address:        Minoritenplatz 5
address:        A-1014 Wien
address:        Austria
phone:          +43 1 53120 7740
fax-no:         +43 1 53120 81 7740
nic-hdl:        RP1126
mnt-by:         ACONET-LIR-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2018-08-27T11:50:18Z
source:         RIPE # Filtered

person:         Rene Pranz
address:        HTBLVA Textil Wien V
address:        Spengergasse 20
address:        A-1050 Wien
phone:          +43 1 54615222
nic-hdl:        RP13871-RIPE
mnt-by:         ACONET-LIR-MNT
created:        2016-08-12T07:41:33Z
last-modified:  2018-07-02T10:08:12Z
source:         RIPE # Filtered

route:          192.189.51.0/24
descr:          HBLVA-EDV
origin:         AS1853
mnt-by:         AS1853-MNT
created:        2009-09-07T15:46:14Z
last-modified:  2009-09-08T08:11:51Z
source:         RIPE