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dig is useful for network troubleshooting and for educational purposes. It can operate based on command line option and flag arguments, or in batch mode by reading requests from an operating system file. When a specific
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When originally written, the manual page for dig indicated that its name was an acronym for "Domain
Information Groper". This expansion was removed in 2017; the tool's name is now simply "dig".
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is not specified in the command invocation, it uses the operating system's default resolver, usually configured in the file
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Paul Albitz and
Cricket Liu. DNS and BIND, 5th Edition. Nutshell Series. O'Reilly and Associates, Inc., 2006.
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4 since at least 1990; later it was rewritten by
Michael Sawyer, and is maintained by the
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Queries may be directed to designated DNS servers for specific records; in this example,
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513:; <<>> DiG 9.11.3 <<>> wikimedia.org MX @ns0.wikimedia.org
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queries do not enumerate multiple records, the only option is to request each
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522:;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39041
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525:;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
342:;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0
339:;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4016
297:; however, the older tools are still used in complementary fashion.
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DNS query is a special meta query which is now deprecated. Since
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available. A common selection to make the output more terse is:
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dig was originally written by Steve Hotz and incorporated into
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is a simple utility for performing Domain Name System lookups
330:; <<>> DiG 9.6.1 <<>> example.com any
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dig is a component of the domain name server software suite
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705:– possible types of records stored and queried within DNS
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value, which indicates the time of validity of the data.
289:. dig supersedes in functionality older tools, such as
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49:. Unsourced material may be challenged and removed.
614:$ dig +noall +answer +multiline wikimedia.org MX
537:; COOKIE: c9735311d2d2fa6e3b334ab01b67960d (good)
528:;; WARNING: recursion requested but not available
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8:
588:;; SERVER: 208.80.154.238#53(208.80.154.238)
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348:;example.com. IN ANY
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509:$ dig wikimedia.org MX @ns0.wikimedia.org
310:In this example, dig is used to query for
127:
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316:type of record information in the domain
109:Learn how and when to remove this message
841:Dig source code in ISC Gitlab repository
836:How to use dig to query DNS name servers
16:Network administration command-line tool
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271:. Without any arguments it queries the
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591:;; WHEN: Sat Sep 18 21:33:24 PDT 2021
534:; EDNS: version: 0, flags:; udp: 1024
491:(e.g. A, CNAME, or MX) individually.
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662:are simply output formatting flags.
47:adding citations to reliable sources
766:"Dig Command in Linux (DNS Lookup)"
14:
438:;; WHEN: Wed Aug 12 11:40:43 2009
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831:Official BIND 9 man page for dig
23:
156:Computer Systems Research Group
34:needs additional citations for
1:
1538:Free network-related software
741:"LICENSE in Bind 9.11 branch"
280:Internationalized domain name
452:in the above example is the
676:Internet Systems Consortium
435:;; SERVER: ::1#53(::1)
152:Internet Systems Consortium
1554:
141:Steve Hotz, Michael Sawyer
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659:+noall +answer +multiline
606:output formatting options
238:https://www.isc.org/bind/
126:
703:List of DNS record types
610:
505:
322:
516:;; global options: +cmd
333:;; global options: +cmd
1493:Unix SUS2008 utilities
1488:Standard Unix programs
880:command-line interface
794:"dig (4.4BSD of 1990)"
600:With output formatting
594:;; MSG SIZE rcvd: 108
441:;; MSG SIZE rcvd: 154
326:$ dig example.com any
250:network administration
223:Mozilla Public License
651:mx2001.wikimedia.org.
633:mx1001.wikimedia.org.
585:;; Query time: 1 msec
582:mx2001.wikimedia.org.
564:mx1001.wikimedia.org.
531:;; OPT PSEUDOSECTION:
432:;; Query time: 1 msec
414:hostmaster.icann.org.
1381:Software development
540:;; QUESTION SECTION:
345:;; QUESTION SECTION:
43:improve this article
678:as part of BIND 9.
495:Specific DNS server
381:b.iana-servers.net.
366:a.iana-servers.net.
123:
1533:Domain Name System
546:;; ANSWER SECTION:
351:;; ANSWER SECTION:
257:Domain Name System
137:Original author(s)
58:"Dig" command
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475:queries usefully
255:for querying the
253:command-line tool
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743:. Archived from
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697:Root name server
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293:and the program
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604:There are many
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282:(IDN) queries.
212:DNS lookup tool
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1301:Shell builtins
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884:shell builtins
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636:wikimedia.org.
618:wikimedia.org.
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567:wikimedia.org.
549:wikimedia.org.
519:;; Got answer:
506:
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396:208.77.188.166
336:;; Got answer:
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1428:Miscellaneous
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1364:Documentation
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882:programs and
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747:on 2021-08-22
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301:Example usage
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281:
278:dig supports
276:
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273:DNS root zone
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60: –
59:
55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
1528:DNS software
1504:
1482:
815:Bibliography
801:. Retrieved
797:
774:. Retrieved
772:. 2020-02-26
770:linuxize.com
769:
760:
749:. Retrieved
745:the original
735:
680:
669:
658:
657:
655:
603:
498:
483:
482:
480:
471:
470:
461:
460:
458:
454:time to live
448:
447:
445:
399:example.com.
384:example.com.
369:example.com.
354:example.com.
317:
312:
311:
309:
284:
277:
261:
245:
244:
229:before 9.11)
154:(originally
147:Developer(s)
105:
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
891:File system
693:name server
489:record type
467:around 2019
446:The number
318:example.com
269:resolv.conf
265:name server
227:ISC license
1522:Categories
1483:Categories
803:2024-05-17
776:2024-03-07
751:2021-09-19
727:References
501:MX records
417:2007051703
99:April 2011
69:newspapers
1343:Searching
1032:Processes
1151:basename
720:nslookup
685:See also
291:nslookup
1256:strings
1176:dirname
1100:logname
1049:crontab
666:History
426:1209600
259:(DNS).
234:Website
218:License
201:OpenVMS
197:illumos
193:Solaris
189:Windows
181:OpenBSD
177:FreeBSD
83:scholar
1236:printf
1161:csplit
903:chattr
656:Where
449:172719
402:172719
387:172719
372:172719
357:172719
173:NetBSD
85:
78:
71:
64:
56:
1460:sleep
1414:strip
1394:ctags
1329:unset
1309:alias
1291:xargs
1271:troff
1231:patch
1226:paste
1201:iconv
1130:write
1120:uname
1023:umask
1013:touch
1003:split
998:rmdir
973:mkdir
958:fuser
923:cksum
918:chgrp
913:chown
908:chmod
709:whois
429:86400
306:Basic
248:is a
185:macOS
169:Linux
90:JSTOR
76:books
1506:List
1445:expr
1419:yacc
1404:make
1355:grep
1350:find
1334:wait
1324:test
1319:echo
1276:uniq
1261:tail
1251:sort
1241:read
1216:more
1206:join
1196:head
1191:fold
1171:diff
1156:comm
1115:tput
1110:talk
1105:mesg
1095:exit
1074:time
1064:nice
1059:kill
1018:type
953:file
877:Unix
714:host
691:BIND
672:BIND
639:3600
621:3600
570:3600
552:3600
459:The
423:3600
420:7200
295:host
287:BIND
208:Type
62:news
1440:cal
1399:lex
1371:man
1246:sed
1166:cut
1146:awk
1125:who
1090:env
1008:tee
988:pwd
983:pax
928:cmp
898:cat
484:ANY
481:If
472:ANY
462:any
408:SOA
313:any
246:dig
122:dig
45:by
1524::
1455:od
1450:lp
1435:bc
1409:nm
1389:ar
1314:cd
1286:wc
1281:vi
1266:tr
1221:nl
1211:m4
1186:ex
1181:ed
1069:ps
1054:fg
1044:bg
1039:at
993:rm
978:mv
968:ls
963:ln
948:df
943:du
938:dd
933:cp
796:.
785:^
768:.
648:50
645:MX
642:IN
630:10
627:MX
624:IN
579:50
576:MX
573:IN
561:10
558:MX
555:IN
503::
478:.
405:IN
390:IN
378:NS
375:IN
363:NS
360:IN
320::
275:.
199:,
195:,
191:,
187:,
183:,
179:,
175:,
171:,
869:e
862:t
855:v
806:.
779:.
754:.
393:A
225:(
158:)
112:)
106:(
101:)
97:(
87:·
80:·
73:·
66:·
39:.
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