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  2. List of Illinois area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Illinois_area_codes

    In March 2007, an overlay plan was created for NPA 630 adding area code 331, and 779 was added to 815. With the depletion of new numbers in area codes 312 and 773, an overlay of both of them, area code 872, was created in November 2009, beginning ten-digit dialing within the city limits of Chicago. The remaining area without an overlay in the ...

  3. Area codes 630 and 331 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_630_and_331

    Area code 630 is the parent area code of the numbering plan area, created in a three-way area code split of area code 708 on August 3, 1996, with the southern suburbs keeping 708 and the northern suburbs receiving 847. Within a decade, 630 was close to exhaustion due to the growth of the Chicago suburbs and the proliferation of cell phones and ...

  4. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    2023: returned to the pool of area codes available for future area code relief; 457: Louisiana (Shreveport–Bossier City, Monroe, Alexandria, Fisher, Tallulah, and most of northern Louisiana) September 25, 2025 [3] to be overlaid on 318; previously a fictitious area code assigned to identify Naked DSL/Dry Loop and dedicated data lines in ...

  5. Area code 872 - Wikipedia

    en.wikipedia.org/wiki/Area_code_872

    Area code 872 is a telephone area code in the North American Numbering Plan for Chicago in the U.S. state of Illinois. It is an overlay code for a numbering plan area that comprises those of area codes 312 and 773. The overlay commenced service on November 7, 2009. [1]

  6. Category:Area codes in Illinois - Wikipedia

    en.wikipedia.org/wiki/Category:Area_codes_in...

    Area codes 217 and 447; Area codes 309 and 861; Area code 312; Area code 447; Area codes 618 and 730; Area codes 630 and 331; Area codes 708 and 464; Area code 773; Area codes 815 and 779; Area codes 847 and 224; Area code 872

  7. Category:Lists of United States area codes - Wikipedia

    en.wikipedia.org/wiki/Category:Lists_of_United...

    Pages in category "Lists of United States area codes" The following 52 pages are in this category, out of 52 total. ... Code of Conduct; Developers; Statistics;

  8. Area codes 815 and 779 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_815_and_779

    The new area code was one of the first area codes not serving an entire state, but having the digit 0 in the middle position of the code. It was the only new area code created in Illinois between 1947 and the 1989 creation of area code 708. [2] In preparation of an overlay plan with the new area code 779, all calls from the 815 area needed to ...

  9. Area codes 708 and 464 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_708_and_464

    Area code 708 was created on November 11, 1989, in a split of area code 312. It once served almost all of Chicago's suburbs in Illinois. In 1996, its numbering plan area was reduced in a three-way area code split. The northern suburbs received area code 847, while the western suburbs were assigned area code 630.