% APNIC found the following authoritative answer from: whois.ripe.net

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% The objects are in RPSL format.
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% Information related to '134.91.0.0 - 134.91.255.255'

% No abuse contact registered for 134.91.0.0 - 134.91.255.255

inetnum:        134.91.0.0 - 134.91.255.255
netname:        UNIDUI-LAN
descr:          Universitaet Duisburg-Essen
descr:          Lotharstr. 65
descr:          47057 Duisburg
country:        DE
admin-c:        GK6979-RIPE
tech-c:         MK26491-RIPE
status:         LEGACY
mnt-by:         DFN-LIR-MNT
mnt-lower:      DFN-LIR-MNT
mnt-routes:     DFN-MNT
mnt-irt:        IRT-DFN-CERT
created:        1970-01-01T00:00:00Z
last-modified:  2024-07-02T15:17:29Z
source:         RIPE

person:         Guido Kerkewitz
address:        Universitaet Duisburg-Essen
address:        Zentrum fuer Informations- und Mediendienste
address:        Forsthausweg 2
address:        47057 Duisburg
address:        Germany
phone:          +49 203 379 4253
nic-hdl:        GK6979-RIPE
mnt-by:         DFN-NTFY
created:        2021-12-07T09:22:28Z
last-modified:  2021-12-07T09:22:28Z
source:         RIPE

person:         Martin Klick
address:        Universitaet Duisburg-Essen
address:        Zentrum fuer Informations- und Mediendienste
address:        Schuetzenbahn 70
address:        45127 Essen
address:        Germany
phone:          +49 201 183 3973
nic-hdl:        MK26491-RIPE
mnt-by:         DFN-NTFY
created:        2024-07-02T14:58:48Z
last-modified:  2024-07-02T14:58:48Z
source:         RIPE # Filtered

% Information related to '134.91.0.0/16AS1275'

route:          134.91.0.0/16
descr:          UNIDUI-LAN
origin:         AS1275
mnt-by:         DFN-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2001-09-22T09:32:38Z
source:         RIPE

% Information related to '134.91.0.0/16AS680'

route:          134.91.0.0/16
descr:          UNIDUI-LAN
origin:         AS680
mnt-by:         DFN-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2001-09-22T09:33:18Z
source:         RIPE

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

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