Clue: Opening digits America's used with most of communication lines?
We have 1 possible answer for the clue Opening digits America's used with most of communication lines? which appears 1 time in our database.
Possible Answers:
Related Clues:
- Seattle's 206, e.g.
- Three-digit ID
- Numerical prefix, of a sort
- First three numbers, in some directories
- Prefix with triple digits
- Long-distance requirement
- 407 in Orlando, e.g.
- Number prefix
- Prefix for calling
- Telephone prefix assigned to a region
- Telephone prefix for a region
- 410 or 212, e.g
- Alaska's 907, e.g
- Are a set of rules needed when calling elsewhere?
- (410) or (212), e.g