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

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
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% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to '192.129.1.0 - 192.129.1.255'

% No abuse contact registered for 192.129.1.0 - 192.129.1.255

inetnum:        192.129.1.0 - 192.129.1.255
netname:        MPISOC-LAN
descr:          Max-Planck-Institut fuer Sozialrecht und Sozialpolitik
descr:          Muenchen
country:        DE
admin-c:        AR67476-RIPE
tech-c:         AR67476-RIPE
status:         LEGACY
mnt-by:         DFN-LIR-MNT
mnt-irt:        IRT-DFN-CERT
created:        1970-01-01T00:00:00Z
last-modified:  2022-02-04T11:33:03Z
source:         RIPE

person:         Axel Roemmelmayer
address:        Max-Planck-Institut fuer Sozialrecht und Sozialpolitik
address:        Amalienstrasse 33
address:        80799 Muenchen
address:        Germany
phone:          +49 89 38602 113
fax-no:         +49 89 38602 199
nic-hdl:        AR67476-RIPE
mnt-by:         DFN-NTFY
created:        2009-06-30T16:13:44Z
last-modified:  2022-02-04T11:33:03Z
source:         RIPE # Filtered

% Information related to '192.129.1.0/24AS1275'

route:          192.129.1.0/24
descr:          MPIPF-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 '192.129.1.0/24AS12816'

route:          192.129.1.0/24
origin:         AS12816
mnt-by:         DFN-LIR-MNT
created:        2024-10-31T11:38:05Z
last-modified:  2024-10-31T11:38:05Z
source:         RIPE
descr:          MPIPF-LAN

% Information related to '192.129.1.0/24AS680'

route:          192.129.1.0/24
descr:          MPIPF-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 (DEXTER)

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