Hello, I have a problem to configure PTR zone for my domain.. For example, I want to create PTR zone for IP: 188.8.131.52 We are an autonomous system, all IP classes (184.108.40.206/21) are managed by myself. 1) I have created a new zone 0-220.127.116.11.in-addr.arpa. 2) I have add a CNAME record: hostname: 34 target hostname: 34.100-24. 3) I have add a PTR record name: webhosting01 Cname: 34. if I try to do: nslookup -type=ptr 18.104.22.168 ns1.itgreen.info Server: ns1.itgreen.info Address: 22.214.171.124#53 ** server can't find 126.96.36.199.in-addr.arpa: REFUSED which is the problem? which is my error? I don't know why i receveid this error.. can we help me, please?