Номер телефона 612 чей

From Wikipedia, the free encyclopedia

Area code 612 is a telephone area code in the North American Numbering Plan (NANP) in the U.S. state of Minnesota. The numbering plan area comprises the city of Minneapolis and a few surrounding municipalities such as Fort Snelling, St. Anthony, and Richfield. Geographically, it is the smallest area code in the state of Minnesota. The area code is one of the two original area codes in the 1947 nationwide numbering plan for the state, when it was assigned to a much larger area, including the entire Twin Cities region and a wide area surrounding it.

History[edit]

When the American Telephone and Telegraph Company (AT&T) created the first nationwide telephone numbering plan in 1947, Minnesota was divided into two numbering plan areas (NPAs), which were identified with area codes 612 and 218. According to historical maps, 612 comprised roughly the southeastern third of Minnesota. The rest of the state received area code 218, which formed an r-shaped region around the 612 NPA. The separating line extended westward from Duluth to the center of the state, then south through the center.

In 1954, the state’s area code boundaries were redrawn and the state was divided into three numbering plan areas. 612 was rotated to cover most of the central portion of Minnesota, stretching border to border from Wisconsin through the Twin Cities to South Dakota. In the process, it absorbed some of 218’s southern portion, including St. Cloud and Alexandria. Part of the southern portion of the original 612 territory, including Rochester and Mankato, was combined with the southwestern portion of 218 to form the new area code 507. The 218 region was reshaped to be more square, absorbing much of the old 612’s northeastern portion, and now consisted of roughly the northern half of the state. This configuration remained in place for 42 years.

In 1996, the northern and western portion of 612, including almost all of its territory outside of the Twin Cities, became area code 320. This was intended as a long-term solution. However, the continued growth of the Twin Cities and the proliferation of cell phone and pager services pushed 612 back to the brink of exhaustion within a year. In 1998, the 612 region was roughly split in half, mostly following the Mississippi River. Minneapolis and the area west of the Mississippi retained the old code, while most of the area east of the Mississippi, including St. Paul, became the new area code 651.

Within another year, however, it became apparent that the creation of 651 would not free up enough numbers in the western Twin Cities to meet demand. The Twin Cities are home to most of the state’s landlines, pagers, and cell phones, and their continued proliferation forced a three-way split of 612 that took effect in 2000. Minneapolis and a few suburbs to the north and south kept 612. The northwest suburbs (Brooklyn Park, Coon Rapids, Maple Grove) became area code 763 while the southwest suburbs (Bloomington, Eden Prairie, Minnetonka. St. Louis Park) got area code 952.

The eastern half of the University of Minnesota, Twin Cities campus, in the St. Paul suburb of Falcon Heights, is an exception to the regional numbering plan. Because of an integrated telephone system linking both campuses, the Falcon Heights campus remained in 612 after the 1998 split.

612 is one of the few urbanized area codes without an area code overlay, making Minneapolis one of the few major cities where seven-digit dialing is still possible. Under current projections, it will stay that way until at least 2039.^[1]

The area code splits in the Twin Cities are unusual because they split along municipal, rather than exchange area boundaries. This led to a division of numerous exchange areas between the two area codes, and a few being divided among three.^[2]

Even with the split into four area codes, most of the Twin Cities region is still a single rate center.^[3] The four Twin Cities area codes comprise one of the largest local calling areas in the United States; with a few exceptions, no long-distance charges are applied from one part of the Twin Cities to another. Portions of area codes 320 and 507 are local calls from the Twin Cities as well.

Service area[edit]

• City of Minneapolis
• Richfield
• St. Anthony
• Fort Snelling
• University of Minnesota, Twin Cities

See also[edit]

• List of North American area codes

References[edit]

External links[edit]

• NANPA: Minnesota area code map
• Area code history
• 1947 Area Code Assignment Map

Minnesota area codes: 218, 320, 507, 612, 651, 763, 952

	North: 763
West: 763, 952	612	East: 651
	South: 952

Coordinates: 44°57′N 93°17′W / 44.950°N 93.283°W

From Wikipedia, the free encyclopedia

Area code 612 is a telephone area code in the North American Numbering Plan (NANP) in the U.S. state of Minnesota. The numbering plan area comprises the city of Minneapolis and a few surrounding municipalities such as Fort Snelling, St. Anthony, and Richfield. Geographically, it is the smallest area code in the state of Minnesota. The area code is one of the two original area codes in the 1947 nationwide numbering plan for the state, when it was assigned to a much larger area, including the entire Twin Cities region and a wide area surrounding it.

History[edit]

When the American Telephone and Telegraph Company (AT&T) created the first nationwide telephone numbering plan in 1947, Minnesota was divided into two numbering plan areas (NPAs), which were identified with area codes 612 and 218. According to historical maps, 612 comprised roughly the southeastern third of Minnesota. The rest of the state received area code 218, which formed an r-shaped region around the 612 NPA. The separating line extended westward from Duluth to the center of the state, then south through the center.

In 1954, the state’s area code boundaries were redrawn and the state was divided into three numbering plan areas. 612 was rotated to cover most of the central portion of Minnesota, stretching border to border from Wisconsin through the Twin Cities to South Dakota. In the process, it absorbed some of 218’s southern portion, including St. Cloud and Alexandria. Part of the southern portion of the original 612 territory, including Rochester and Mankato, was combined with the southwestern portion of 218 to form the new area code 507. The 218 region was reshaped to be more square, absorbing much of the old 612’s northeastern portion, and now consisted of roughly the northern half of the state. This configuration remained in place for 42 years.

In 1996, the northern and western portion of 612, including almost all of its territory outside of the Twin Cities, became area code 320. This was intended as a long-term solution. However, the continued growth of the Twin Cities and the proliferation of cell phone and pager services pushed 612 back to the brink of exhaustion within a year. In 1998, the 612 region was roughly split in half, mostly following the Mississippi River. Minneapolis and the area west of the Mississippi retained the old code, while most of the area east of the Mississippi, including St. Paul, became the new area code 651.

Within another year, however, it became apparent that the creation of 651 would not free up enough numbers in the western Twin Cities to meet demand. The Twin Cities are home to most of the state’s landlines, pagers, and cell phones, and their continued proliferation forced a three-way split of 612 that took effect in 2000. Minneapolis and a few suburbs to the north and south kept 612. The northwest suburbs (Brooklyn Park, Coon Rapids, Maple Grove) became area code 763 while the southwest suburbs (Bloomington, Eden Prairie, Minnetonka. St. Louis Park) got area code 952.

The eastern half of the University of Minnesota, Twin Cities campus, in the St. Paul suburb of Falcon Heights, is an exception to the regional numbering plan. Because of an integrated telephone system linking both campuses, the Falcon Heights campus remained in 612 after the 1998 split.

612 is one of the few urbanized area codes without an area code overlay, making Minneapolis one of the few major cities where seven-digit dialing is still possible. Under current projections, it will stay that way until at least 2039.^[1]

The area code splits in the Twin Cities are unusual because they split along municipal, rather than exchange area boundaries. This led to a division of numerous exchange areas between the two area codes, and a few being divided among three.^[2]

Even with the split into four area codes, most of the Twin Cities region is still a single rate center.^[3] The four Twin Cities area codes comprise one of the largest local calling areas in the United States; with a few exceptions, no long-distance charges are applied from one part of the Twin Cities to another. Portions of area codes 320 and 507 are local calls from the Twin Cities as well.

Service area[edit]

• City of Minneapolis
• Richfield
• St. Anthony
• Fort Snelling
• University of Minnesota, Twin Cities

See also[edit]

• List of North American area codes

References[edit]

External links[edit]

• NANPA: Minnesota area code map
• Area code history
• 1947 Area Code Assignment Map

Minnesota area codes: 218, 320, 507, 612, 651, 763, 952

	North: 763
West: 763, 952	612	East: 651
	South: 952

Coordinates: 44°57′N 93°17′W / 44.950°N 93.283°W

Телефонный код 612 является частью Североамериканский план нумерации (NANP) телефонная сеть общего пользования для города Миннеаполис, Миннесота и несколько прилегающих территорий, таких как Форт Снеллинг, Святой Антоний и Richfield. По географическому признаку это самый маленький код города в штате Миннесота. Однако, как и многие другие городские коды в Соединенных Штатах, регион раньше был намного больше, составляя все Города-побратимы регион и обширная территория вокруг него.

Вначале Миннесота получила два кода города: 612 и 218. Карта NANP 1947 года показала регион, определяемый примерно как юго-восточная треть Миннесоты. Остальное государство составляло 218, что составляло р-образный регион вокруг кода города 612. Разделительная линия проходила на запад от Дулут в центр штата, затем вниз через центр.

Из-за опасений, что первоначальная конфигурация пересекала маршруты платного движения в городах-побратимах, коды городов Миннесоты были перенастроены в 1954 году. Часть южной части предыдущей территории 612, включая Рочестер и Манкато, был объединен с юго-западной частью 218 г., чтобы сформировать новый код города 507. Код города 612 был заменен на большую часть центральной Миннесоты, простираясь от границы до границы от Висконсин через города-побратимы в южная Дакота. В процессе он поглотил часть южной части 218, включая Сент-Клауд и Александрия. Область 218 была преобразована в более квадратную, поглотив большую часть северо-восточной части старого 612 года, и теперь охватывала примерно северную половину штата. Эта конфигурация оставалась в силе 42 года.

В 1996 году северная и западная часть старой территории 612, включая почти всю ее территорию за пределами городов-побратимов, стала код города 320. Это было задумано как долгосрочное решение, но в течение года 612 снова оказался на грани истощения из-за продолжающегося роста городов-побратимов и распространения сотовых телефонов и пейджеров. В 1998 году регион 612 был примерно разделен пополам, в основном после Река Миссисипи. Миннеаполис и область к западу от Миссисипи сохранили старый код, в то время как большая часть области к востоку от Миссисипи, включая св. Павел — стал новым код города 651.

Это было задумано как долгосрочное решение для обмена в городах-побратимах. Однако города-побратимы являются домом не только для большинства стационарных телефонов штата, но и для большинства пейджеров и сотовых телефонов. Это привело к тому, что 612 снова оказались на грани истощения менее чем через год после разделения 651. В результате код 612 сократился до текущего размера в результате трехстороннего разделения, которое вступило в силу в 2000 году. Код 612 был сокращен до Миннеаполиса и нескольких пригородов к северу и югу. Северо-западные окраины (Бруклинский парк, Кун Рэпидс, Maple Grove ) стал код города 763 а юго-западные окраины (Блумингтон, Eden Prairie, Миннетонка. Сент-Луис Парк ) стал код города 952.

Восточная половина Университет Миннесоты, города-побратимы кампус в пригороде Сент-Пол Falcon Heights, является заметным исключением из регионального плана нумерации. Из-за интегрированной телефонной системы, соединяющей оба кампуса, кампус Falcon Heights остался в 612 после разделения 1998 года.

612 — один из немногих кодов урбанизированных зон без наложение, что делает Миннеаполис одним из немногих крупных городов, где все еще возможен семизначный набор номера. По текущим прогнозам, так оно и будет как минимум до 2039 года.^[1]

Разделение кода города в городах-побратимах необычно, потому что они разделены по муниципальным, а не центральным границам. Это привело к тому, что значительное количество телефонных станций было разделено между двумя кодами зоны, а некоторые — между тремя.^[2]

Коды четырех городов-побратимов составляют одну из крупнейших зон телефонной связи в Соединенных Штатах; За некоторыми исключениями, плата за междугороднюю связь не взимается из одной части городов-побратимов в другую. Части кодов 320 и 507 являются местными звонками из городов-побратимов.

• Город Миннеаполис
• Richfield
• Святой Антоний
• Форт Снеллинг
• Университет Миннесоты, города-побратимы

Смотрите также

• Список кодов регионов Северной Америки

Рекомендации

внешняя ссылка

• NANPA: карта кодов города Миннесота
• История телефонных кодов
• Карта назначения телефонного кода 1947 года

Миннесота коды городов: 218, 320, 507, 612, 651, 763, 952

	север: 763
Запад: 763, 952	612	Восток: 651
	юг: 952

Координаты: 44 ° 57′N 93 ° 17’з.д. / 44,950 ° с. Ш. 93,283 ° з.

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