[dx2]

以下自己看，懶的打字，有問題再問
Domain name availability is subject to the name reservation rules listed
below. The following domain name-types are unavailable for public registration:

Reserved Name Rules:

All domains of any length beginning with 18XX or 1-8XX or 8XX
where X is any number from 0 to 9 inclusive.


All domains beginning with NXX or 1NXX or 1-NXX followed by exactly seven numbers not including hyphens,where N is any number from 2 to 9 inclusive and X is any number from 0 to 9 inclusive.


All domains beginning with XXXXX where X is any number from 0 to 9 inclusive.
Example of reserved domains:

1800abc.us (rule #1)
812abc-def.us (rule #1)
1-805-999-9999.us (rule #1)
212-999-9999.us (rule #2)
19009998888.us (rule #2)
1-212---1-2-3-4-5-6-7--.us (rule #2)
20176.us (rule #3)
90210-Melrose.us (rule #3)
Example of non-reserved domains

18-00bar.us
1111.us
yourname.us
1-212-5.us
1-212---1-2-3-4-5-6-7--abc.us
2222.us