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513 designates a specific geographic region within the North American Numbering Plan (NANP). This three-digit numerical prefix allows for telephone calls to be routed to southwestern Ohio, primarily encompassing the Cincinnati metropolitan area. For example, a phone number using this designator would begin 513-XXX-XXXX.

The aforementioned numerical identifier is crucial for efficient telecommunications infrastructure. Its implementation ensures proper call delivery and facilitates regional identification. Initially established in 1947 as one of the original area codes, its continued use provides a historical link to the development of the modern telephone network and represents a consistent method for directing calls within its designated service area.

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A numbering plan area, designated numerically, serves as a geographic identifier within a telecommunications network. This three-digit code precedes the seven-digit telephone number and is essential for routing calls to the correct destination. For example, a call placed from outside a designated area requires dialing this code before the local number.

These numerical designators streamline telecommunications by dividing service areas and preventing number duplication. Their implementation facilitated the expansion of telephone networks and efficient call routing. Historical context reveals their creation as a response to growing demand and the need for standardized routing protocols. The system allows for manageable growth and adaptation to evolving telecommunications technologies.

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The numerical designator 339 identifies a specific geographic region within the North American Numbering Plan. This area code serves communities within the Commonwealth of Massachusetts, operating alongside the established 781 code as an overlay. As an overlay code, it serves the same geographic area as another established code. As an example, a phone number assigned under this code might look like 339-555-0100.

Its introduction became essential due to the increasing demand for telephone numbers in the region it serves. Implementing this new designation allowed for continued expansion of telecommunication services without requiring existing users to change their numbers. The historical context involves anticipating future needs within a rapidly growing technological landscape, where mobile devices and internet-based communication have become ubiquitous.

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The numerical designation ‘228’ represents a specific geographic area within the North American Numbering Plan (NANP). This identifier, when dialed prior to a local telephone number, directs the call to the correct telecommunications routing switch within the assigned region. As an example, any telephone number within the outlined zone will require this prefix for successful call completion from outside the local calling area.

This numbering convention is vital for effective communication infrastructure and supports business operations and personal connectivity. Its implementation allows telecommunication networks to efficiently manage call traffic and ensure accurate delivery of information. Established protocols ensure its consistent application and management over time to support growth and technological changes in communications.

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The numerical sequence 306 designates a specific geographic telephone numbering plan area. This area encompasses the entire province of Saskatchewan, Canada. When placing a call to any location within Saskatchewan from outside the region, this three-digit identifier is required as the initial component of the ten-digit dialing sequence. For example, a call to Regina, Saskatchewan, would begin with 306, followed by a seven-digit local number.

This identifier is crucial for telecommunications routing, ensuring calls originating outside Saskatchewan are directed accurately. Its establishment facilitates both personal and business communication across the province and provides a distinct identity for Saskatchewan within the North American Numbering Plan. Originally implemented in 1947, it has served as the sole designation for Saskatchewan for many years, contributing to a consistent and recognizable telecommunications landscape.

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