I try to make a reverse zone for BIND in order to have my dns server, but If i have nslookup to mi ip for resolve zones it give this 18.104.22.168.inversas.jazztel.es JAZZTEL is my isp for internet adsl dynamic ip conexion. Mi question my ISP haves reverse zoner for my IP?? How can i change this, I should be talk with they? or isn't inportant, if I make reverse zone in my computer, this works?? I have ubuntu perfect setup to the letter, I have a register domain.tld for tecnical issues pointed with A reg ns1.domain.tdl and ns2.domain.tld to mu ip. THANKS.