GCM
AS25924 (GCM) announces at least two prefixes:
12.30.121.0/24
This network range is not allocated to APNIC. If your whois search has returned this message, then you have searched the APNIC whois database for an address that is allocated by another Regional Internet Registry (RIR). Please search the other RIRs at whois.arin.net or whois.ripe.net for more information about that range.
1970-01-01
IANA-NETBLOCK-12
12.0.0.0-12.255.255.255
65.51.34.0/24
Cablevision Systems Corp.
NET-65-51-0-0-1
65.51.0.0-65.51.255.255
0