| 11. | The new numbering plan area ( NPA ) entered service on October 11, 1993.
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| 12. | A broad division is commonly recognized, distinguishing open numbering plans and closed numbering plans.
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| 13. | The telephone numbering plan for the country is known as the National Numbering Plan.
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| 14. | The numbering plan area retains its original boundaries, having never been split or overlaid.
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| 15. | And Dionysius Exiguus'year-numbering plan took centuries to win widespread acceptance.
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| 16. | The Alaska numbering plan area ( NPA ) was assigned the area code 907.
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| 17. | In this sense, too, the numbering plan betrays a desire to expand ministerial interests.
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| 18. | Spain changed to a closed telephone numbering plan in 1998.
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| 19. | Russia has an open numbering plan with 10-digit phone numbers.
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| 20. | A broad division is commonly recognized, distinguishing open numbering plans and closed numbering plans.
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