Dnsreport is a simple tool to query DNS servers not only about the "first level" of records but also the deeper ones.
Authors:
$ dnsreport github.com
github.com using nameserver default
├─ SOA
│ ╰─ns1.p16.dynect.net. hostmaster.github.com. 1371943718 3600 600 604800 60
├─ A
│ ╰─204.232.175.90
│ ╰─github.com.
├─ AAAA
├─ MX
│ ├─20 ALT1.ASPMX.L.GOOGLE.com.
│ ├─10 ASPMX.L.GOOGLE.com.
│ ├─20 ALT2.ASPMX.L.GOOGLE.com.
│ ├─30 ASPMX3.GOOGLEMAIL.com.
│ ╰─30 ASPMX2.GOOGLEMAIL.com.
├─ SRV
├─ TXT
│ ╰─"v=spf1 include:_spf.google.com include:support.zendesk.com include:sendgrid.net include:mailgun.org a:smtp1-ext.rs.github.com ~all"
├─ DNAME
├─ NS
│ ├─ns2.p16.dynect.net.
│ ├─ns4.p16.dynect.net.
│ ├─ns1.p16.dynect.net.
│ ╰─ns3.p16.dynect.net.
├─ SPF
│ ╰─"v=spf1 include:_spf.google.com include:support.zendesk.com include:sendgrid.net include:mailgun.org a:smtp1-ext.rs.github.com ~all"
├─ PTR
├─ RP
╰─ CNAME