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2. List of Oregon area codes - Wikipedia

   en.wikipedia.org/wiki/List_of_Oregon_area_codes

   971: An overlay of area code 503. Until 2008, 971 was a concentrated overlay, meaning it was only present in some parts of the 503 area. Today it is a standard overlay. 458: An overlay of area code 541. Under the original North American Numbering Plan of 1947, area code 503 covered all of Oregon. Area code 541 was split off in 1995, the 971 ...

3. Area codes 503 and 971 - Wikipedia

   en.wikipedia.org/wiki/Area_codes_503_and_971

   On July 1, 1999, area code 971 was created as a concentrated overlay for most of the numbering plan area, with the exceptions of Clatsop and Tillamook counties. [3] Initially, ten-digit dialing was to become mandatory in that service area on January 30, 2000, but the date was extended until October 1, 2000.

4. Toll-free telephone numbers in the North American Numbering ...

   en.wikipedia.org/wiki/Toll-free_telephone...

   The first automated toll-free telephone numbers were assigned with area code 800, created as inbound Wide Area Telephone Service (InWATS) in 1966 (U.S. intrastate) and 1967 (interstate). These terminated on special fixed-rate trunks which would accept calls from a specified calling area with either no limit or a specific maximum number of hours ...

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

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

   Look at the area code: Start by comparing the phone number’s area code to the list of area codes you should never answer. If it’s on the list, there’s a good chance there’s a scammer on ...

6. Still love your landline? Phone service providers are getting ...

   www.aol.com/finance/still-love-landline-phone...

   “Traditional landline telephone service is the most dependable communications tool currently available in rural communities and is vital to reliably accessing 9-1-1,” he said.

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

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

   The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits.