List of original NANP area codes
original area codesoriginal 86 area codesoriginal area codeoriginal numbering plan areas86 allocated area codes86 area codes86 original area codes86 three-digit routing codesarea codesinitial 86 area codes
This is the list of original North American Numbering Plan area codes of 86 plan areas as defined by AT&T in 1947.wikipedia
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Area codes 204 and 431
204431204, 431
204 is one of the original 86 area codes assigned in 1947 in the contiguous United States and the then-nine-province extent of Canada.
Telephone exchange names
central office nametelephone exchangetelephone exchange name
This included a three-digit central office prefix, dialed as the first two letters of the local central office name and one digit, and the four-digit subscriber station number.
In the 1940s, the Bell System developed the North American Numbering Plan, a system of initially 86 allocated area codes which were used at first only by switchboard operators to route trunk calls between plan areas.
Area code 202
202Area codes in Washington, D.C.
The area code was one of the original area codes established in October 1947 by AT&T in the North American Numbering Plan (NANP).
North American Numbering Plan
Area codeArea codesArea code(s)
In preparation for direct distance dialing, AT&T and the Bell System developed the North American Numbering Plan in the 1940s.
Originally only 86 area codes were assigned.
Area codes 214, 469, and 972
972214469
Area code 214 was one of the original area codes established with the North American Numbering Plan in October 1947.
Area codes 201 and 551
201area code 201551
Area code 201 was the first-assigned numbering plan area (NPA) code of the original NPAs when AT&T devised the North American Numbering Plan in 1947.

Area codes 212, 646, and 332
212, 332, 646212area code 212
Area code 212 is one of the original 86 area codes assigned by AT&T in 1947, when it served the entire five boroughs of New York City until 1984.
Area code 216
216area code
It was one of the original area codes issued in the North American Numbering Plan on January 1, 1947.
Area code 217
217XXX
217 was one of the original area codes, which were created in 1947.


Area codes 215, 267, and 445
Area code 215215215 and 267
In 1947, when AT&T established the North American Numbering Plan, the original area code 215 included the entire southeastern part of the Commonwealth, from the Delaware border to the Lehigh Valley.

Area codes 305 and 786
305305, 786786
Area code 305 was one of the original area codes created in 1947, and originally covered the entire state of Florida.
Area code 206
206area code
Area code 206 was one of the original area codes assigned in 1947, and originally covered the entire state of Washington.

Area codes 301 and 240
301240 & 301240
Area code 301 was one of the original area codes established in 1947 when the North American Numbering Plan (NANP) was created, and originally covered the entire state of Maryland.
Area code 404
404Atlanta calling area
Area code 404 was created in 1947 as one the original numbering plan areas in North America.
Area codes 303 and 720
303720303, 720
Area code 303 was one of the original area codes put into service in 1947, and originally covered the entire state of Colorado.
Area codes 416, 647, and 437
416416, 647416, 647, 437
The main area code, 416, was one of the 86 original area codes introduced in 1947.



Area codes 518 and 838
518518 & 838838
518 was established as one of the original area codes in 1947.
Area codes 503 and 971
503 and 971503971
Area code 503 was one of the original area codes created as part of the North American Numbering Plan by AT&T and Bell Laboratories in 1947.

Area codes 512 and 737
512512 & 737737
Area code 512 was one of the original area codes established in October 1947.
Area code 207
207telephone area codeArea codes in Maine
Area code 207 was created as one of the original area codes in 1947.

Area codes 601 and 769
601601 & 769Area code 601
The main area code, 601, was one of the original area codes implemented in 1947, and covered the entire state of Mississippi.
Area codes 315 and 680
315315 & 680680
The main area code, 315, was one of the original area codes created in 1947.
Area codes 613 and 343
613613, 343343
613 is one of the 86 original area codes in the NANP assigned in October 1947.


Area codes 317 and 463
317317 and 463317 & 463
317 was one of the original area codes introduced in 1947.

Area code 504
504
504 was one of the original area codes created in 1947, and originally covered all of Louisiana.

