facebook has ipv6, on wwww.v6.facebook.com www.v6.facebook.com. 3600 IN AAAA 2620:0:1cfe:face:b00c::3 Maybe on ipv6 day they might put that on t

facebook has ipv6, on wwww.v6.facebook.com www.v6.facebook.com. 3600 IN AAAA 2620:0:1cfe:face:b00c::3 Maybe on ipv6 day they might put that on the main www.facebook.com name too - no idea.