new hosts appearing between 2012-07-18_0800 and 2012-07-19_0800:
bol.uol.com.br                  has IPv4 200.221.8.140, 200.147.67.181 has IPv6 2804:49c:319:430::326 (ok)
snapwidget.com                  has IPv4 96.126.119.26 has IPv6 2600:3c00:1::607e:771a (ok)
www.binaryoptions-affiliate.com  has IPv4 173.236.233.101 has IPv6 2607:f298:2:126::845:3c1c (ok)
www.blogspot.in                 has IPv4 74.125.127.191 has IPv6 2001:4860:8005::bf (ok)
www.bluecoat.com                has IPv4 199.91.133.25 has IPv6 2001:418:9804:111::9 (ok)
www.free.fr                     has IPv4 212.27.48.10 has IPv6 2a01:e0c:1:1599::1 (ok)
www.google.com.do               has IPv4 74.125.224.120, 74.125.224.127, 74.125.224.119 has IPv6 2001:4860:4001:802::1018 (ok)
www.googlewatchblog.de          has IPv4 199.27.134.152, 141.101.126.152 has IPv6 2400:cb00:2048:1::c71b:8698 (ok), 2400:cb00:2048:1::8d65:7e98 (ok)
www.joomlaclube.com.br          has IPv4 189.38.91.70 has IPv6 2804:10:2003::91:70 (ok)
www.jprs.jp                     has IPv4 202.11.16.167 has IPv6 2001:df0:8:7::80 (ok)
www.juridicas.com               has IPv4 188.165.132.232 has IPv6 2001:41d0:2:f1ca::2 (ok)
www.mtv.uol.com.br              has IPv4 200.147.3.199, 200.147.35.224 has IPv6 2804:49c:319:430::326 (ok)
www.ntt.com                     has IPv4 210.163.219.224 has IPv6 2001:380:516:4220::1:1 (ok)
www.thunderbird-mail.de         has IPv4 87.230.62.237 has IPv6 2a01:488:42:1000:57e6:3eed:4f:ff3e (ok)
www.webhostingtalk.nl           has IPv4 109.72.90.229 has IPv6 2a00:f10:10a:d::80:443 (ok)

hosts disappearing between 2012-07-18_0800 and 2012-07-19_0800:
kh.edu.tw                       had IPv4 163.32.250.6 had IPv6 2001:288:8201:2::21 
www.adsense.blogspot.com        had IPv4 74.125.224.138, 74.125.224.139, 74.125.224.140 had IPv6 2001:4860:4001:803::100c 
www.blogspot.com.au             had IPv4 74.125.127.191 had IPv6 2001:4860:8005::bf 
www.blogspot.it                 had IPv4 74.125.127.191 had IPv6 2001:4860:8005::bf 
www.blogspot.pt                 had IPv4 74.125.127.191 had IPv6 2001:4860:8005::bf 
www.bol.uol.com.br              had IPv4 200.221.8.140, 200.147.67.181 had IPv6 2804:49c:319:430::319 
www.cofares.net                 had IPv4 74.125.127.121 had IPv6 2001:4860:8005::79 
www.google-engage.appspot.com   had IPv4 74.125.127.141 had IPv6 2001:4860:8005::8d 
www.jhu.edu                     had IPv4 128.220.192.40 had IPv6 2606:2b00:0:150::a281:614 
www.orzhk.org                   had IPv4 208.113.135.62 had IPv6 2607:f298:2:121::c4b:4c94 
www.prq.se                      had IPv4 88.80.30.4 had IPv6 2a00:16b0:1:1:80::80 
www.rpi.edu                     had IPv4 128.113.26.112, 128.113.2.68 had IPv6 2620:0:2820:b0::68 , 2620:0:2820:26::112 
www.sch.gr                      had IPv4 194.63.235.170 had IPv6 2001:648:2302:fd00:203:baff:fed2:cd07 
www.stc.com.sa                  had IPv4 212.118.156.22 had IPv6 2001:16a0:6000:3::4 
www.telmex.com                  had IPv4 200.57.141.200 had IPv6 2806:1080:101::1a 
www.thefunelf.com               had IPv4 74.125.127.121 had IPv6 2001:4860:8005::79 
www.tv-porinternet.com          had IPv4 74.125.127.121 had IPv6 2001:4860:8005::79 
www.udacity.com                 had IPv4 74.125.127.121 had IPv6 2001:4860:8005::79