Whois results:

inetnum:        87.233.175.0 - 87.233.175.255
netname:        DENIC-AMS-TrueNL-NET
descr:          DENIC eG
descr:          Wiesenhuettenplatz 26
descr:          D-60329 Frankfurt
descr:          Germany
descr:          Network Infrastructure
country:        NL
admin-c:        SD24
tech-c:         EKB2
status:         ASSIGNED PA
mnt-by:         DE-DOM
mnt-by:         TRUESERVER-MNT
mnt-lower:      DE-DOM
mnt-lower:      TRUESERVER-MNT
mnt-routes:     TRUESERVER-MNT
source:         RIPE # Filtered

person:         Elmar K Bins
address:        DENIC eG
address:        Kaiserstr. 75-77
address:        D-60329 Frankfurt/Main
address:        Germany
phone:          +49 69 27235 0
fax-no:         +49 69 27235 235
nic-hdl:        EKB2
mnt-by:         ELMI-MNT
source:         RIPE # Filtered

person:         Sabine Dolderer
address:        DENIC eG
address:        Kaiserstrasse 75-77
address:        D-60329 Frankfurt
address:        Germany
phone:          +49 69 27235 0
fax-no:         +49 69 27235 235
nic-hdl:        SD24
mnt-by:         DENIC-P
source:         RIPE # Filtered


route:          87.233.128.0/18
descr:          True
descr:          GlobalVoice (AMS7) netblock
origin:         AS15703
mnt-by:         TRUESERVER-MNT
source:         RIPE # Filtered