Name

PTR (pointer) — (From RFC 1035, page 18)

Textual representation

owner ttl class 
PTR dname

Example

1.249.249.192.in-addr.arpa.  IN PTR wormhole.movie.edu.

Binary representation

PTR type code: 12
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
    /                   PTRDNAME                    /
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

where:

PTRDNAME

Is a domain-name that points to some location in the domain name space.

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