;; Answer received from 127.0.1.1:53 (260 bytes)
;;
;; HEADER SECTION
;; id = 36568
;; qr = 1 opCode: QUERY aa = 0 tc = 0 rd = 1
;; ra = 1 ad = 0 cd = 0 rcode = NoError
;; qdCount = 1 anCount = 6 nsCount = 4 arCount = 4
;; QUESTION SECTION (1 record):
;; google.com. IN A
;; ANSWER SECTION (6 records):
google.com. 31 IN A 64.233.183.102
google.com. 31 IN A 64.233.183.113
google.com. 31 IN A 64.233.183.100
google.com. 31 IN A 64.233.183.139
google.com. 31 IN A 64.233.183.101
google.com. 31 IN A 64.233.183.138
;; AUTHORITY SECTION (4 records):
google.com. 152198 IN NS ns1.google.com.
google.com. 152198 IN NS ns3.google.com.
google.com. 152198 IN NS ns4.google.com.
google.com. 152198 IN NS ns2.google.com.
;; ADDITIONAL SECTION (4 records):
ns3.google.com. 152198 IN A 216.239.36.10
ns4.google.com. 152198 IN A 216.239.38.10
ns2.google.com. 152198 IN A 216.239.34.10
ns1.google.com. 345090 IN A 216.239.32.10
As you can see from response above, there are 5 sections
Header section: DNS lookup headers
Question section: DNS question,
Answer section: Array of the exact lookup answer (base on lookup type. ex. A, NS, MX , etc)
Authority section: Array of authority nameserver
Additional section: Array array of nameserver lookup
Since its all are objects, we can call each section like that
will return an array with all IPs assigned to this domain
[google.com. 34 IN A 74.125.239.35,
google.com. 34 IN A 74.125.239.39,
google.com. 34 IN A 74.125.239.33,
google.com. 34 IN A 74.125.239.34,
google.com. 34 IN A 74.125.239.36,
google.com. 34 IN A 74.125.239.32,
google.com. 34 IN A 74.125.239.46,
google.com. 34 IN A 74.125.239.40,
google.com. 34 IN A 74.125.239.38,
google.com. 34 IN A 74.125.239.37,
google.com. 34 IN A 74.125.239.41]
[google.com. 212 IN MX 40 alt3.aspmx.l.google.com.,
google.com. 212 IN MX 30 alt2.aspmx.l.google.com.,
google.com. 212 IN MX 20 alt1.aspmx.l.google.com.,
google.com. 212 IN MX 50 alt4.aspmx.l.google.com.,
google.com. 212 IN MX 10 aspmx.l.google.com.]
All lookup
any =Net::DNS::Resolver.start("facebook.com",Net::DNS::ANY).answer
returns
[facebook.com. 385 IN A 173.252.120.6,
facebook.com. 85364 IN TXT ,
facebook.com. 149133 IN NS b.ns.facebook.com.,
facebook.com. 149133 IN NS a.ns.facebook.com.]