Optimum Online NETBLK-OOL-5BLK (NET-68-192-0-0-1) 68.192.0.0 - 68.199.255.255 Optimum Online (Cablevision Systems) OOL-CPE-SMFRCT-68-198-48-0-20 (NET-68-198-48-0-1) 68.198.48.0 - 68.198.63.255 # ARIN WHOIS database, last updated 2010-02-08 20:00 # Enter ? for additional hints on searching ARIN's WHOIS database. # # ARIN WHOIS data and services are subject to the Terms of Use # available at https://www.arin.net/whois_tou.html