single-character host names

[Mike Bernhardt]

I've been looking into the RFCs regarding whether or not single-character
(alpha) host names are allowed or not. RFC 952 says no, but 2181 says that
host names must between 1 and 63 octets in length, which would appear to say
"yes."

Certainly, several large organizations (Google, Yahoo and CNN, to name 3)
are using at least 1: "m"

So what is the accepted view on this currently? Is there another RFC that
has made it OK now?

Mike