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A radar beacon (racon) is a device that returns a distinctive signal when triggered by a radar, providing range, bearing and identification information. Learn about the principle of operation, the characteristics, the applications and the proposal for enhanced RACON.
Find out the telephone prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks. The list is organized by world zones and includes the ITU-T standards and the exceptions for political and historical alignment.
Learn about the geographic and non-geographic area codes used in the North American Numbering Plan (NANP), which divides the territories of its members into numbering plan areas (NPAs). See the numerical order, date, territory or use, and notes of each area code.
Look up official contact information online and call that number to verify the legitimacy of the initial call. To further protect yourself, enable spam-blocking features on your phone.
Learn how to find out who owns any phone number by using a free reverse phone lookup service. Compare the features and benefits of eight sites, including Spy Dialer, that offer this service.
AOL Mail offers features like news, weather, security and spam-blocking for free. You can sign up for an AOL account and access your email on the go with an app or on the web.
Learn how different countries and agencies use predefined systems to describe the priority and response assigned to calls for service. Compare the codes and methods used by emergency services in the United States, the United Kingdom, and other jurisdictions.
Distraction is the process of diverting attention from a desired focus and blocking or diminishing the reception of information. Learn about the types, sources, and impacts of distraction in various domains such as driving, education, workplace, fiction, religion, warfare and medicine.