new hosts appearing between 2012-02-17_0800 and 2012-02-18_0800:
www.blog.uol.com.br             has IPv4 200.147.3.199, 200.147.35.224 has IPv6 2804:49c:319:430::326 (ok)
www.idgnow.uol.com.br           has IPv4 200.147.35.224, 200.147.3.199 has IPv6 2804:49c:319:430::326 (ok)
www.teamliquid.net              has IPv4 173.231.136.216 has IPv6 2001:48c8:1:400::1:1 (ok)
www.xkcd.com                    has IPv4 72.26.203.99 has IPv6 2001:48c8:1:d:0:23:5482:d026 (ok)

hosts disappearing between 2012-02-17_0800 and 2012-02-18_0800:
www.big.or.jp                   had IPv4 183.181.7.1 had IPv6 2001:2e8:621:0:2:1:0:1 
www.hinet.net                   had IPv4 202.39.224.7 had IPv6 2001:b000:180:3::7 
www.streamtheworld.com          had IPv4 208.80.55.200 had IPv6 2002:d050:37c8::1 
www.techtudo.com.br             had IPv4 186.192.82.155 had IPv6 2804:294:4000:8000::5 
www.ui.ac.id                    had IPv4 152.118.24.142 had IPv6 2403:da00:1:3::8e 
www.zoover.de                   had IPv4 82.94.206.81, 82.94.206.82, 82.94.206.83, 82.94.206.84 had IPv6 2001:888:2000:29::206:83 , 2001:888:2000:29::206:84 , 2001:888:2000:29::206:81 , 2001:888:2000:29::206:82