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.