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

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

   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 dialing code in the group NXX for various other purposes.

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

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

   AT&T: AT&T Mobility: Not operational: GSM 850 / GSM 1900 / UMTS 850 / UMTS 1900: Former AT&T Wireless Services, then Cingular Wireless (known as "Cingular Blue") 310: 390: Cellular One of East Texas: TX-11 Acquisition, LLC: Operational: GSM 850 / LTE 700 / CDMA: Former Yorkville Telephone Cooperative: 310: 400: IT&E Wireless: IT&E Overseas, Inc ...

4. AT&T - Wikipedia

   en.wikipedia.org/wiki/AT&T

   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. [4] It is the world's fourth-largest telecommunications company by revenue and the largest wireless ...

5. AT&T restores service after hours of outage - AOL

   www.aol.com/news/cellular-outage-us-hits-t...

   800-290-4726 more ways to reach us. ... The number of outage incidents to about 3,255 by around 2:47 p.m. ET (1947 GMT), according to tracking website Downdetector.com. ... "We are aware of an ...

6. AT&T outage: Company says network is fully restored after ...

   www.aol.com/news/thousands-t-customers-report...

   AT&T, the nation’s largest carrier, has more than 240 million subscribers. More than 70,000 outages were reported after 8 a.m. ET, according to Downdetector , a website that detects outages.

7. Toll-free telephone number - Wikipedia

   en.wikipedia.org/wiki/Toll-free_telephone_number

   800-toll-free numbers. 800 toll-free numbers are commonly called "800 免费电话". The official name is "被叫集中付费业务" (called party collect paid service), which means the cost of the call is borne not by the caller but by the party receiving the call. 800-toll-free numbers in China are ten-digit numbers beginning with "800".

8. North American Numbering Plan - Wikipedia

   en.wikipedia.org/wiki/North_American_Numbering_Plan

   1. International access. 011. List of dialing codes. The North American Numbering Plan ( NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1. Some North American countries, most notably ...

9. Directory assistance - Wikipedia

   en.wikipedia.org/wiki/Directory_assistance

   Toll-free directory assistance. In the U.S., directory assistance for companies with toll-free "800 numbers" (with area codes 800, 833, 844, 855, 866, 877, and 888) was available from toll-free directory assistance, reachable by dialing 1-800-555-1212, for many decades until it was discontinued in 2020.