Researchers exploited WhatsApp's API vulnerability to scrape 3.5 billion phone numbers. Learn how this massive data breach ...

In the beginning, there were telephones, but no telephone numbers. Calls were placed by operators, who connected people by name. Then came numbers, but the first phone numbers were short — “5” could ...

The new number system code would be at a telecom circle or state level. Fixed-line users will soon be required to dial a full 10-digit number, even for local calls, if the government accepts the ...

In the mid-20th century, in response to the United States’ rapidly expanding telephone network, executives at the Bell System introduced a new way of dialing the phone. Until then, for the most part, ...