Whois results:

inetnum:        81.28.232.0 - 81.28.232.255
netname:        VARIOMEDIA-DE-NET
descr:          Variomedia IT-Service GmbH
country:        DE
admin-c:        ML-RIPE
tech-c:         VRMD-RIPE
status:         ASSIGNED PA
mnt-by:         VARIOMEDIA-P
mnt-routes:     INET4YOU-MNT
source:         RIPE # Filtered

role:           Variomedia AG
address:        August-Bebel-Strasse 68
address:        14482 Potsdam
address:        DE
phone:          +49-331-23789-0
fax-no:         +49-331-23789-59
e-mail:         variomedia.de
admin-c:        ML-RIPE
admin-c:        JP838-RIPE
tech-c:         ML-RIPE
tech-c:         JP838-RIPE
nic-hdl:        VRMD-RIPE
mnt-by:         VARIOMEDIA-P
source:         RIPE # Filtered

person:         Marten Lehmann
address:        Variomedia AG
address:        August-Bebel-Strasse 68
address:        14482 Potsdam
address:        DE
phone:          +49-331-23789-0
e-mail:         variomedia.de
nic-hdl:        ML-RIPE
mnt-by:         VARIOMEDIA-P
source:         RIPE # Filtered


route:        81.28.224.0/20
descr:        Variomedia IT-Service GmbH via AS15366
origin:       AS15366
mnt-by:       DNSNET-MNT
mnt-by:       INET4YOU-MNT
source:       RIPE # Filtered


route:        81.28.232.0/21
descr:        Route object for 81.28.232.0/21
mnt-by:       INET4YOU-MNT
mnt-by:       INET-PEOPLE-MNT
remarks:      temporary, should be aggregated to 81.28.224.0/20
origin:       AS29014
source:       RIPE # Filtered


route:        81.28.224.0/20
descr:        Route object for 81.28.224.0/20
origin:       AS29014
mnt-by:       INET4YOU-MNT
source:       RIPE # Filtered


route:          81.28.232.0/22
descr:          Route object for 81.28.232.0/22
descr:          Colocation Berlin
origin:         AS29014
mnt-by:         INET4YOU-MNT
source:         RIPE # Filtered