inetnum:            172.23.16.0 - 172.23.23.255
cidr:               172.23.16.0/21
netname:            NET-BLK31621-DN42
descr:              NL-Zuid DN42 IPv4 reserve block
remarks:            * Reserved for NL-Zuid infrastructure and exchanges
policy:             reserved
admin-c:            NL-ZUID-DN42
mnt-by:             MARLINC-MNT
mnt-by:             NIXNODES-MNT
status:             ALLOCATED
source:             DN42