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2. List of mobile telephone prefixes by country - Wikipedia

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

   Mobile phones use geographic area codes. Exchanges may service on mobile devices; local numbers are portable between wired and wireless carriers. While area code 600 has been established as a non-geographic code that can be used by mobile phones, the only significant mobile usage has been for satellite phone service in remote regions. Cape ...

3. Porting Authorisation Code - Wikipedia

   en.wikipedia.org/wiki/Porting_Authorisation_Code

   The current service provider must give the customer a Porting Authorisation Code (PAC), or a reason why it cannot be issued, within two working hours of their request (if for fewer than 26 numbers) or ten working days (for 26+ numbers) A PAC is valid for a period of 30 calendar days from the day of issue, and the customer's request must be ...

4. Mobile number portability - Wikipedia

   en.wikipedia.org/wiki/Mobile_number_portability

   A key technical aspect of Mobile Number Portability (MNP) involves the routing of calls or mobile messages (SMS, MMS) to a number once it has been ported.Various call routing implementations exist globally, but the International and European best practice employs a central database (CDB) of ported numbers.

5. How to Do a Free Reverse Phone Lookup & the 8 Best ... - AOL

   www.aol.com/finance/free-reverse-phone-lookup-8...

   Spy Dialer is a free reverse phone lookup service that accesses public databases of registered phone numbers to help users find information on cell phone and landline numbers and emails.

6. List of countries by number of mobile numbers in use

   en.wikipedia.org/wiki/List_of_countries_by...

   This list ranks the countries of the world by the number of mobile phone numbers in use. As an important caveat, this list does not provide the number of mobile phones in use. It is common for each SIM card has a separate phone number, so phones with multiple SIM cards will have multiple phone numbers.

7. International mobile subscriber identity - Wikipedia

   en.wikipedia.org/wiki/International_Mobile...

   This is mainly important for international mobile roaming. Outside North America, the IMSI is converted to the Mobile Global Title (MGT) format, standard E.214, which is similar to an E.164 number. E.214 provides a method to convert the IMSI into a number that can be used for routing to international SS7 switches.

8. 30 Scam Phone Numbers To Block and Area Codes To Avoid - AOL

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

   Scammer phone number lookup: Another option to determine if a phone number calling you is likely scam activity is to search for it on Google. Several websites track scam numbers, and a quick ...

9. List of telephone country codes - Wikipedia

   en.wikipedia.org/wiki/List_of_telephone_country...

   Worldwide distribution of country calling codes. Regions are coloured by first digit. Telephone country codes, but also sometimes referred to as country dial-in codes, or historically international subscriber dialing (ISD) codes in the U.K., are telephone number dialing prefixes for reaching subscribers in foreign countries or areas via international telecommunication networks.