$TTL 1w

4.0.8.e164.aa-asterisk.org.uk.      IN SOA ns1.grokhost.net. bootc.bootc.net. (
                    2010110502  ; serial
                    2h          ; refresh
                    30m         ; retry
                    2w          ; expire
                    30m)        ; minimum

$TTL 1d

; NS - Name servers
                NS      ns1.grokhost.net.
                NS              ns2.grokhost.net.

; Phone numbers

0.0.2                   NAPTR   100 10 "U" "E2U+sip"    "!^.*$!sip:bootc@bootc.net!" .
0.0.2                   NAPTR   102 10 "U" "E2U+tel"    "!^.*$!tel:+441271414100!" .

0.0.3                   NAPTR   100 10 "U" "E2U+sip"    "!^.*$!sip:voicemail@bootc.net!" .

0.7.0.7.1               NAPTR   100 10 "U" "E2U+sip"    "!^.*$!sip:echotest@bootc.net!" .