Possible Questions:
- Communications debut of 1947
- Three before seven
- Prefix for calling
- Numbers after 1
- Three-digit number
- Phone number prefix
- Parenthetical information
- Numbers following 1
- Long-distance requirement
- Information information
- Important prefix
- Dialer's need
- Certain three-digit number
- Certain numerical prefix
- 727 in Florida, e.g.
- (410) or (212), e.g.
- Trio preceding an exchange
- Three-digit starter for a dialer
- Three-digit ID
- Three numbers that are usually in parentheses
- Three numbers after 1
- Three digits for dialers
- Three digits after 1
- Seattle's 206, e.g.
- Regional figure
- Prefix with triple digits
- Prefix in parentheses
- Phone number?
- Phone number part
- Part of a phone number
- Parenthetical figure
- Opening number
- One often precedes it
- Numerical prefix, of a sort
- Number prefix
- Number after 1?
- N.Y.C.'s is 212
- Montana has only one
- Long-distance need
- Locale identifier
- It precedes a phone number
- It might be the initial number of callers
- It may precede an exchange
- Hawaii's is 808
- Hawaii's 808
- Geographical indicator
- First three numbers, in some directories
- Exchange preceder
- Customer-file entry
- Customer file entry
- Cartoonist Gardner's unlisted number?
- Caller's prefix
- Call numbers?
- Baltimore's 410
- Alaska's 907, e.g.
- 800, e.g.
- 747 in California, e.g.
- 718, e.g.
- 410 or 212, e.g.
- 407 in Orlando, e.g.
- 212 or 718, e.g.
- 208, for Idaho
- 208 in Idaho, e.g.
- 201, e.g.
- 201 or 202, e.g.