new hosts appearing between 2012-07-21_0800 and 2012-07-22_0800:
mail.ru                         has IPv4 217.69.141.22, 217.69.141.21 has IPv6 2a00:1148:1:1322::b0ba (ok)
mozilla.org                     has IPv4 63.245.215.20 has IPv6 2620:101:8008:5::2:1 (ok)
www.arabianbusiness.com         has IPv4 208.111.148.178, 69.28.176.57 has IPv6 2607:f4e8:110:104:230:48ff:fe8b:8862 (ok), 2607:f4e8:110:13:230:48ff:fe83:3f7 (ok)
www.blogspot.com.au             has IPv4 74.125.127.191 has IPv6 2001:4860:8005::bf (ok)
www.blogspot.com.br             has IPv4 74.125.127.191 has IPv6 2001:4860:8005::bf (ok)
www.imgur.com                   has IPv4 108.162.206.103, 108.162.205.103 has IPv6 2400:cb00:2048:1::6ca2:cd67 (ok), 2400:cb00:2048:1::6ca2:ce67 (ok)
www.lawblog.de                  has IPv4 83.151.25.246 has IPv6 2001:4d88:ffff:ffff:2:b34f:457:2 (ok)
www.ncsu.edu                    has IPv4 152.1.226.10 has IPv6 2605:100:10::10 (ok)
www.sannet.ne.jp                has IPv4 202.216.0.23 has IPv6 2405:0:21:927::80:11 (ok), 2405:0:21:927::80:13 (ok), 2405:0:21:926::80:10 (ok), 2405:0:21:926::80:12 (ok)
www.srv-ad.com                  has IPv4 74.125.127.121 has IPv6 2001:4860:8005::79 (ok)

hosts disappearing between 2012-07-21_0800 and 2012-07-22_0800:
bayimg.com                      had IPv4 192.121.86.164 had IPv6 2a00:1a28:1151:0:20c:29ff:feab:f262 
kh.edu.tw                       had IPv4 163.32.250.6 had IPv6 2001:288:8201:2::21 
www.binaryoptions-affiliate.com  had IPv4 173.236.233.101 had IPv6 2607:f298:2:126::845:3c1c 
www.blogspot.fr                 had IPv4 74.125.127.191 had IPv6 2001:4860:8005::bf 
www.bluecoat.com                had IPv4 199.91.133.25 had IPv6 2001:418:9804:111::9 
www.cuni.cz                     had IPv4 195.113.89.35 had IPv6 2001:718:1e03:622::12 
www.google.lu                   had IPv4 74.125.224.120, 74.125.224.127, 74.125.224.119 had IPv6 2001:4860:4001:802::101f 
www.gov.si                      had IPv4 193.2.236.15 had IPv6 2001:1470:c000:1::c102:ec0f 
www.michaelis.uol.com.br        had IPv4 200.147.35.224, 200.147.3.199 had IPv6 2804:49c:319:430::326 
www.mozilla.org                 had IPv4 63.245.217.105 had IPv6 2620:101:8008:5::2:1 
www.openpr.com                  had IPv4 141.0.17.227 had IPv6 2a00:1158:0:406:6fd2::1 
www.pix-geeks.com               had IPv4 199.27.135.43, 173.245.61.120 had IPv6 2400:cb00:2048:1::adf5:3d78 , 2400:cb00:2048:1::c71b:872b