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2. North American Numbering Plan - Wikipedia

   en.wikipedia.org/wiki/North_American_Numbering_Plan

   The Glenn Miller tune PEnnsylvania 6-5000 refers to telephone number PE6-5000, a number in service at the Hotel Pennsylvania (212 736-5000) in New York City until the hotel's closing in 2020. Similarly, the movie BUtterfield 8 is set in the East Side of Manhattan between roughly 64th and 86th Streets, where the telephone prefixes include 288.

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

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

   Contents. Toll-free telephone numbers in the North American Numbering Plan. Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, and 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special ...

4. AT&T - Wikipedia

   en.wikipedia.org/wiki/AT&T

   AT&T Inc. (with "AT&T" being an abbreviation for its former name, the American Telephone and Telegraph Company) is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. [5] It is the world's fourth-largest telecommunications company by revenue and the largest wireless carrier in ...

5. AT&T made big benefits changes to keep up with the well-being ...

   www.aol.com/finance/t-made-big-benefits-changes...

   AT&T is among several companies pursuing alternative worker mental health support ... 800-290-4726 more ways to ... which launched in Jan. 2020. Michelle Jordan, AT&T’s chief diversity officer ...

6. List of country calling codes - Wikipedia

   en.wikipedia.org/wiki/List_of_country_calling_codes

   Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.

7. Identify legitimate AOL websites, requests, and communications

   help.aol.com/articles/identify-legitimate-aol...

   • Fake email addresses - Malicious actors sometimes send from email addresses made to look like an official email address but in fact is missing a letter(s), misspelled, replaces a letter with a lookalike number (e.g. “O” and “0”), or originates from free email services that would not be used for official communications.

8. Mobile network codes in ITU region 3xx (North America)

   en.wikipedia.org/wiki/Mobile_network_codes_in...

   AT&T: AT&T Mexico: Not operational: iDEN 800: Former Nextel; shut down 2017: 334: 020: Telcel: América Móvil: Operational: UMTS 850 / UMTS 1900 / LTE 850 / LTE 1700 / LTE 2600 / 5G 3500: former Radiomóvil Dipsa; GSM shut down Sep 2020: 334: 030: Movistar: Telefónica: Operational: MVNO: former Pegaso PCS; MVNO on AT&T, own spectrum returned ...

9. Cellular frequencies in the United States - Wikipedia

   en.wikipedia.org/wiki/Cellular_frequencies_in...

   There are 51 MTAs, 493 BTAs and 175 EAs in the United States. The Advanced Wireless Services (AWS) bands, auctioned in the summer of 2006, were for 1,710–1,755 MHz, and 2,110–2,155 MHz. The spectrum was divided into blocks: A blocks were for Cellular Market Areas, based on existing cellular (1G) licenses, and were 2 × 10 MHz.