Joseph S D Yao writes:
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
restrictions on the length. Labels must be 63 characters or less.
A label must start with a letter? oh I don't think so.
How about these domains which all have huge DNS traffic?
163.com
126.com
51.com
56.com
yes 163.com is a domain name but "163" also can be treated as a label for
domain "com.", is it?
Thanks.
Regards.
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