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  2. Mobile telephone numbering in India - Wikipedia

    en.wikipedia.org/wiki/Mobile_telephone_numbering...

    Mobile telephone numbering in India. In India, mobile numbers (including pagers) on GSM, WCDMA, LTE and NR networks start with either 9, 8, 7 or 6. Each telecom circle is allowed to have multiple private operators; earlier it was two private + BSNL/MTNL, subsequently it changed to three private + BSNL/MTNL in GSM; now each telecom circle has ...

  3. Telephone numbers in India - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_India

    A typical mobile number in India is "+91 xxxx-nnnnnn". The first four digits initially indicated an operator's code, while the remaining six digits are unique to the subscriber. However, with mobile number portability in place, the first four digits no longer indicate a particular operator.

  4. Multi-factor authentication - Wikipedia

    en.wikipedia.org/wiki/Multi-factor_authentication

    Two-step authentication involving mobile phones and smartphones provides an alternative to dedicated physical devices. To authenticate, people can use their personal access codes to the device (i.e. something that only the individual user knows) plus a one-time-valid, dynamic passcode, typically consisting of 4 to 6 digits.

  5. Identify legitimate AOL websites, requests, and communications

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

    Scammers and bad actors are always looking for ways to get personal info with malicious intent. Know how to recognize legitimate AOL websites, requests, and communications to keep your account secure.

  6. Add, replace or remove AOL account recovery info - AOL Help

    help.aol.com/articles/add-or-update-aol-account...

    Add, replace or remove AOL account recovery info. Keep a valid mobile phone number or email address on your account in case you ever lose your password or run into a prompt to verify your...

  7. Caller ID spoofing - Wikipedia

    en.wikipedia.org/wiki/Caller_ID_spoofing

    Caller ID spoofing is a spoofing attack which causes the telephone network's Caller ID to indicate to the receiver of a call that the originator of the call is a station other than the true originating station. This can lead to a display showing a phone number different from that of the telephone from which the call was placed.

  8. Add or disable 2-step verification for extra security - AOL Help

    help.aol.com/articles/2-step-verification...

    Call paid premium support at 1-800-358-4860 to get live expert help from AOL Customer Care. Take control of your account's security and require a verification code, in addition to your password, to sign in to AOL.

  9. Telecommunications in India - Wikipedia

    en.wikipedia.org/wiki/Telecommunications_in_India

    India's telecommunication network is the second largest in the world by number of telephone users (both fixed and mobile phones) with over 1.1 billion subscribers as of December 2023. It has one of the lowest call tariffs in the world enabled by multiple large-scale telecom operators and the ensuant hyper-competition between them.

  10. Why am I asked to verify my account after signing in?

    help.aol.com/articles/why-am-i-asked-to-verify...

    You may be prompted to get a verification code at your recovery phone number or recovery email address for any of the following reasons: • AOL notices suspicious account activity. • You're using an unfamiliar browser or device. • You're traveling away from your usual location.

  11. Personal identification number - Wikipedia

    en.wikipedia.org/wiki/Personal_identification_number

    Mobile phone passcodes. A mobile phone may be PIN protected. If enabled, the PIN (also called a passcode) for GSM mobile phones can be between four and eight digits and is recorded in the SIM card.