$ORIGIN . $TTL 1 ; OK @ URI 0 0 a ; The simplest variant @ URI 65535 65535 ftp://a ; Maximal priority and weight @ URI 0 0 "ftp://a" ; Quoted target @ URI 0 0 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 ; Target longer than 255 @ TYPE256 \# 5 0000000061 ; TYPE + Hexadecimal rdata @ TYPE256 0 0 a ; TYPE @ uri 0 0 a ; Type in lower-case ; OK extensions @ URI 0 0 "" ; Empty target ; KO @ URI @ URI ; Empty rdata @ URI \# 0 ; Hex empty rdata @ URI 65536 0 a ; Priority overflow @ URI 0 65536 a ; Weight overflow @ URI 0 0 a a ; Unexpected item