new hosts appearing between 2012-01-23_0800 and 2012-01-24_0800:
www.sch.gr                      has IPv4 194.63.238.40 has IPv6 2001:648:2302:fd00:203:baff:fed2:cd07 (ok)
www.tatacommunications.com      has IPv4 121.243.66.50 has IPv6 2403:0:0:24::a (ok)

hosts disappearing between 2012-01-23_0800 and 2012-01-24_0800:
www.groupon.at                  had IPv4 62.53.232.219 had IPv6 2a02:3011:1000:0:2::ff01 
www.groupon.ch                  had IPv4 62.53.232.208 had IPv6 2a02:3011:1000:0:2::ff02 
www.groupon.co.uk               had IPv4 62.53.232.213 had IPv6 2a02:3011:1000:0:2::ff04 
www.groupon.de                  had IPv4 62.53.232.222 had IPv6 2a02:3011:1000:0:2::ff00 
www.groupon.fr                  had IPv4 62.53.232.216 had IPv6 2a02:3011:1000:0:2::ff03 
www.groupon.nl                  had IPv4 217.188.242.183 had IPv6 2a02:3011:1000:0:2::ff07 
www.korben.info                 had IPv4 141.101.125.211, 141.101.126.211 had IPv6 2400:cb00:2048:1::8d65:7ed3 , 2400:cb00:2048:1::8d65:7dd3