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2. List of Illinois area codes - Wikipedia

   en.wikipedia.org/wiki/List_of_Illinois_area_codes

   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 northern part of Illinois, 708, eventually received such with area code 464 taking effect on January 21 ...

3. Area codes 847 and 224 - Wikipedia

   en.wikipedia.org/wiki/Area_codes_847_and_224

   Area code 847 was created on January 20, 1996, in a three-way split of area code 708. Area code 847 was involved in the first trial of telephone number pooling in the United States in June 1998, to avert central office code exhaustion in the numbering plan area. [1] Nevertheless, within only five years, 847 was already close to exhaustion from ...

4. Category:Area codes in Illinois - Wikipedia

   en.wikipedia.org/.../Category:Area_codes_in_Illinois

   List of Illinois area codes; 0–9. 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;

5. 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 ...

6. No longer just ‘the 618,’ southern Illinois is scheduled for ...

   www.aol.com/news/no-longer-just-618-southern...

   The 618 area code dates to 1947. A new 730 area code overlaying the current 618 area code will be introduced in southern Illinois next year, the Illinois Commerce Commission announced Wednesday.

7. Navteq - Wikipedia

   en.wikipedia.org/wiki/Navteq

   Navteq Corporation (styled as 'NAVTEQ') was an American Chicago-based provider of geographic information system (GIS) data and a major provider of base electronic navigable maps. The company was acquired by Nokia in 2007–2008, and fully merged into Nokia in 2011 to form part of the Here business unit.