host name
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...
For hosts, the mapping depends on the existing syntax for host names
which is a subset of the usual text representation for domain names,
...
... addresses, etc. Because we
need a reliable inverse mapping from address to host name, a special
mapping for addresses into the IN-ADDR.ARPA ...
... domain, the user should satisfy both the
rules of this memo and those in RFC-822std11(-> 2822prop). When creating a new host name,
the old rules for HOSTS.TXT should be followed. This avoids problems
...
...
The labels must follow the rules for ARPANET host names. They must
start with a letter, end with a letter or digit, and have as interior
characters only letters, digits, and hyphen. There are also some
...
... a 16 bit preference value (lower is
better) followed by a host name willing
to act as a mail exchange for the owner
domain ...
... a host name. ...
... RR with the primary name of
the host. For example, a request for the host name
corresponding to IP address 1.2.3.4 looks for PTR RRs ...
... This happens when the referenced name does not exist. For
example, a user may have mistyped a host name. ...
... that the name in question is an alias. For example, the resolver might
find that the name given for host name to address translation is an
alias when it finds the ...
... plus a referral to the name servers for ISI.EDU. This sort of reply
isn't very likely given that the query is for the host name of the name
server being asked, but would be common for other aliases.
...