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  2. Vertical service code - Wikipedia

    en.wikipedia.org/wiki/Vertical_service_code

    *70 1170 Call waiting disable *71 1171 Usage sensitive three-way call *72 1172 Unconditional forward: All calls *73 1173 Call forward: Cancel *74 1174 Speed calling (8 numbers) *75 1175 Speed calling (30 numbers) *77 1177 Anonymous call rejection activation *78 1178 Do not disturb *79 1179 Do not disturb disable *80 1180 Call blocking disable ...

  3. Call blocking - Wikipedia

    en.wikipedia.org/wiki/Call_blocking

    [1] [2] Such devices and services enable the user to block a call as it is in progress or alternatively block the number after the call is made. These devices rely on caller ID information and thus a phone blocker requires a caller ID service active on the line for blocking to function. Treatment of blocked calls may include: Sending the caller ...

  4. Automatic number identification - Wikipedia

    en.wikipedia.org/wiki/Automatic_number...

    Automatic number identification (ANI) [1] [2] is a feature of a telecommunications network for automatically determining the origination telephone number on toll calls for billing purposes. Automatic number identification was originally created by the American Telephone and Telegraph Company (AT&T) for long distance service in the Bell System ...

  5. List of mobile telephone prefixes by country - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_telephone...

    Mobile phones use geographic area codes (two digits): after that, all numbers assigned to mobile service have nine digits, starting with 6, 7, 8 or 9 (example: 55 15 99999–9999). 90 is not possible, because collect calls start with this number.

  6. The call and text message records of hundreds of millions of AT&T cellphone customers in mid-to-late 2022 were exposed in a massive data breach, the telecom company revealed Friday.

  7. Malicious caller identification - Wikipedia

    en.wikipedia.org/wiki/Malicious_caller...

    Malicious caller identification, introduced in 1992 as Call Trace, [1] also called malicious call trace or caller-activated malicious call trace, is activated by the vertical service code *57 ("star fifty-seven"), and is an upcharge fee subscription service offered by telephone company providers which, when dialed immediately after a malicious call, records metadata for police follow-up.

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. List of telephone country codes - Wikipedia

    en.wikipedia.org/.../List_of_telephone_country_codes

    An area code of three digits dialed after the country code determines the area served in the United States and its territories, Canada, and much of the Caribbean. Zone 2 uses two 2-digit codes (20, 27) and eight sets of 3-digit codes (21x–26x, 28x, 29x), mostly to serve Africa , but also Aruba , Faroe Islands , Greenland and British Indian ...