MDIG(1) BIND 9 MDIG(1) (NAME) mdig - DNS (SYNOPSIS) mdig <{@server>} [-f filename] [-h] [-v] [ [-4] | [-6] ] [-m] [-b address] [-p port#] [-c class] [-t type] [-i] [-x addr] [plusopt...] mdig {-h} mdig [@server] {global-opt...} { {local-opt...} {query} ...} (DESCRIPTION) mdig dig <#std-iscman-dig> / (pipelined) : . . mdig dig <#std-iscman-dig> << >> ( ) << >> ( ) << >> ( ) . @server . IP . ( dig <#std-iscman-dig> /etc/resolv.conf .) IPv4 (dotted-decimal) IPv6 (colon-delimited) . server mdig . mdig . (timeout) (retry) . (+) . . no . ( ). +keyword=value . (ANYWHERE OPTIONS) -f mdig filename (batch mode) . . mdig . -h mdig . -v mdig . (GLOBAL OPTIONS) -4 mdig IPv4 . -6 mdig IPv6 . -b address IP address . "0.0.0.0" "::" . () "#" . -m . -p port# . port# mdig DNS ( ) . . : +additional, +noadditional (additional) [ ]. . +all, +noall . +answer, +noanswer (answer) [ ]. . +authority, +noauthority (authority) [ ]. . +besteffort, +nobesteffort (malformed) [ ]. . +burst . +cl, +nocl (CLASS) [ ]. +comments, +nocomments () . . +continue, +nocontinue ( ) . +crypto, +nocrypto DNSSEC . DNSSEC . . "[omitted]" DNSKEY [ key id = value ]. +multiline, +nomultiline SOA . mdig . +question, +noquestion (question) [ ]. . +rrcomments, +norrcomments ( DNSKEY). . +short, +noshort [ ]. . +split=W base64 W ( W ). +nosplit +split=0 . . +tcp, +notcp TCP [ ]. UDP . +ttlid, +nottlid (TTL) [ ]. +ttlunits, +nottlunits TTL "s" () "m" () "h" () "d" () "w" () [ ]. +ttlid . +vc, +novc TCP [ ]. +tcp . vc "virtual circuit" ( ) . (LOCAL OPTIONS) -c class class . BIND 9 . "IN" . -t type type . BIND 9 . "A" -x "PTR" . -x addr - - . addr IPv4 IPv6 . mdig 11.12.13.10.in-addr.arpa PTR IN . IPv6 (nibble format) IP6.ARPA . : +aaflag, +noaaflag +aaonly +noaaonly . +aaonly, +noaaonly aa . +adflag, +noadflag AD ( / authentic data) [ ]. . AD=1 OPT-OUT . AD=0 . . +bufsize=B UDP EDNS0 B . . . EDNS . +cdflag, +nocdflag CD ( / checking disabled) [ ]. DNSSEC . +cookie=####, +nocookie COOKIE EDNS [ ]. COOKIE . +nocookie . +dnssec, +nodnssec DNSSEC OK (DO) OPT (additional) DNSSEC . +edns[=#], +noedns EDNS [ ]. . EDNS EDNS . +noedns EDNS . EDNS . +ednsflags[=#], +noednsflags EDNS ( Z) . (octal) . ( DO) . Z . +ednsopt[=code[:value]], +noednsopt EDNS code value [ ]. +noednsopt EDNS . +expire, +noexpire EDNS Expire . +nsid, +nonsid EDNS (NSID) . +recurse, +norecurse RD ( / recursion desired) . mdig . +retry=T UDP T . +tries . +subnet=addr[/prefix-length], +nosubnet EDNS Client Subnet IP [ ]. mdig +subnet=0.0.0.0/0, or simply mdig +subnet=0 EDNS client-subnet (resolver) . +timeout=T T . UDP TCP . T . +tries=T UDP T . T . +udptimeout=T UDP T . +unknownformat, +nounknownformat RDATA RR [ ] ( RFC 3597 ). RDATA . +yaml, +noyaml YAML . +zflag, +nozflag DNS DNS [ ]. . (SEE ALSO) dig(1) <#std-iscman-dig>, RFC 1035 . (AUTHORS) Internet Systems Consortium (COPYRIGHT) 2026, Internet Systems Consortium 9.20.27 2026-08-19 MDIG(1)