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 | | This would have been affected by use of area codes 52x (x not 0) for Mexico, and was affected anyway by the first announcement of an NNX area code on 22 July 1993 (334, to be formed in 1995 by splitting 205, which had served all of Alabama). |
 | | 202 area code, previously useable for all but the outermost Maryland and Virginia suburbs, was restricted to DC proper, with 301 or 703, as the case may be, necessary for suburbs. |
 | | Prefixes in the Pentagon, which is in Virginia, were previously in area 202 (not 703), and moved to area 703 in 1990 because of local calls across area code border changing from 7D to NPA+7D; 202- 694 had to be replaced by 703-614 because 703-694 was in use at Stuart. |
| massis.lcs.mit.edu /telecom-archives/archives/areacodes/history.of.area.splits (1632 words) |
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