
This is how "dig @127.0.0.3 example.com" looked on the rtest server:


Received DNS query
Query id: 6
Query type: 0
Opcode: 0
Authoritative: 0
Truncated: 0
Recurs desired: 1
Recurs available: 0
Z data: 0
Result code: 0
Num Questions: 1
Num Answers: 0
Number NS records: 0
Number additional records: 0

Question name: Aexample.com.
Question type: 1
Question class: 1

2 Queries were received before it gave up.

This is what the obsolete tool nslookup did when performing a 
"nslookup example.com 127.0.0.3"


Received DNS query
Query id: 34669
Query type: 0
Opcode: 0
Authoritative: 0
Truncated: 0
Recurs desired: 1
Recurs available: 0
Z data: 0
Result code: 0
Num Questions: 1
Num Answers: 0
Number NS records: 0
Number additional records: 0

Question name: P3.0.0.127.in-addr.arpa.
Question type: 12
Question class: 1

Note that nslookup gave up when it did not get a PTR record for its own 
hostname.

Nslookup did not give up until four tries were completed.

