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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. Project Management Professional - Wikipedia

    en.wikipedia.org/wiki/Project_Management...

    Project Management Professional (PMP) is an internationally recognized professional designation offered by the Project Management Institute (PMI). [1] As of 31 July 2020, there are 1,036,368 active PMP-certified individuals and 314 chartered chapters across 214 countries and territories worldwide.

  4. Chicago metropolitan area - Wikipedia

    en.wikipedia.org/wiki/Chicago_metropolitan_area

    As a result, the city of Chicago was divided into two area codes, 312 and 773. Rather than divide the city by a north–south area code, the central business district retained the 312 area code, while the remainder of the city took the new 773 code. In 2002, the 847 area code was supplemented with the overlay area code 224.

  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. 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 ...

  7. Project Management Institute - Wikipedia

    en.wikipedia.org/wiki/Project_Management_Institute

    In the 1960s project management as such began to be used in the US aerospace, construction, and defense industries. [7] The Project Management Institute was founded by Ned Engman (McDonnell Douglas Automation), James Snyder, Susan Gallagher (SmithKline & French Laboratories), Eric Jenett (Brown & Root), and J Gordon Davis (Georgia Institute of Technology) at the Georgia Institute of Technology ...

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