Hi, I am trying to make call through enum lookup and using bind 9.4.1 as a dns server. My zone file look like this : $ORIGIN . $TTL 21600 ; 6 hours 91.e164.arpa IN SOA ns1.91.e164.arpa. hostmaster.ns1.91.e164.arpa. ( 2005022250 ; serial 10800 ; refresh (3 hours) 3600 ; retry (1 hour) 604800 ; expire (1 week) 86400 ; minimum (1 day) ) NS ns1.91.e164.arpa. A 192.168.96.57 $TTL 60 ; 1 minute NAPTR 100 10 "u" "SIP+E2U" "!^.*$!sip:100@192.168.96.122!i" . $ORIGIN 91.e164.arpa. 1 NAPTR 100 10 "u" "E2U+SIP" "!^.*$!sip:100@192.168.96.122!i" . athir A 192.168.96.57 here i have two xlite phone register with freeswitch and i want to make call between them using enum. I have given name to them as 1 and 2 now i want to call to 1 using 2. Freeswitch give me error dns error and do not resolve 1.91.e164.arpa. Even when i test the naptr record using nslookup utility of bind it give me right answer but freeswitch fail to resolve the address. Thanks Yogesh