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  2. Telephone exchange names - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange_names

    In large cities with coexisting manual and dial areas, the numbering was generally standardized to one format. For example, when the last manual exchange in San Francisco was converted to dial in 1953, the numbers had for several years been in the format of JUniper 6-5833. JUniper 4 was an automatic switching system, but JUniper 6 was manual.

  3. ARC Document Solutions - Wikipedia

    en.wikipedia.org/wiki/ARC_Document_Solutions

    The Delaware corporation name was formally changed to "ARC Document Solutions" in 2012. [4] [non-primary source needed] ARC has received recognition from Forbes magazine (as one of its "Best 200 Small Companies"), Gartner, MPSA, BERTL, and Océ. [citation needed] In Fiscal 2017, the company's revenue was $406 million. [2]

  4. List of companies based in the San Francisco Bay Area

    en.wikipedia.org/wiki/List_of_companies_based_in...

    This is a list of current and former companies based in the San Francisco Bay Area, broken down by type of business.. Fortune 500 rankings are indicated in parentheses. As of 2020, 38 Fortune 500 companies had headquarters in the San Francisco Bay Area.

  5. 30 Scam Phone Numbers To Block and Area Codes To Avoid - AOL

    www.aol.com/19-dangerous-scam-phone-numbers...

    What phone number can I call to report a spam call? You can call 888-382-1222 or visit DoNotCall.gov to report spam calls, telemarketers or robo-callers. Are 877 numbers spam?

  6. North American Numbering Plan - Wikipedia

    en.wikipedia.org/wiki/North_American_Numbering_Plan

    For example, 234 235-5678 is a valid telephone number; with area code 234, central office prefix (exchange) 235, and line number 5678. The number 234 911-5678 is invalid, because the central office code must not be in the form N11. 314 159-2653 is invalid, because the office code must not begin with 1.

  7. Seven-digit dialing - Wikipedia

    en.wikipedia.org/wiki/Seven-digit_dialing

    On July 16, 2020, the FCC adopted rules to establish 988 as the three-digit phone number for the National Suicide Prevention Lifeline. [2] This required 82 area codes to switch to mandatory ten-digit dialing by October 24, 2021, because they had already used 988 as a central office code .

  8. List of California area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_California_area_codes

    Most of the San Gabriel Valley including Pasadena, El Monte, West Covina. Split from 818 on June 14, 1997 628: San Francisco, San Rafael, Novato; all of San Francisco County, most of Marin County and a small portion of northern San Mateo County: Overlay with 415, started service on March 21, 2015 [3] 650

  9. RR Donnelley - Wikipedia

    en.wikipedia.org/wiki/RR_Donnelley

    In 2010 and 2011, R.R. Donnelley acquired Bowne & Co., San Francisco-based Nimblefish Technologies, [37] Helium.com, [38] and Austin-based LibreDigital. [ 39 ] During the Labor Day weekend in September 2011, R.R. Donnelley announced it would close its Bloomsburg printing plant where Penguin Classics and paperbacks in the best-selling Twilight ...