$ORIGIN . $TTL 1 ; OK @ NAPTR 0 0 "" "" "" @ ; The simplest variant @ NAPTR 65535 65535 "" "" "" @ ; Maximal numbers @ NAPTR 65535 65535 "" "" "!^urn:cid:.+@([^\.]+\.)(.*)$!\\2!i" @ ; Regexp example @ NAPTR 0 0 "" "" "" \0320\ \\\"\.\@\*.tld. ; Dname with specials @ TYPE35 \# 8 00000000000000 00 ; TYPE + Hexadecimal rdata @ TYPE35 0 0 "" "" "" @ ; TYPE @ naptr 0 0 "" "" "" @ ; Type in lower-case ; KO @ NAPTR @ NAPTR ; Empty rdata @ NAPTR \# 0 ; Hex empty rdata @ NAPTR 65536 0 "" "" "" @ ; Order overflow @ NAPTR 0 65536 "" "" "" @ ; Preference overflow @ NAPTR 0 0 "" "" "" @ x ; Unexpected item @ NAPTR 0 0 "" "" "" ; Missing item