North American Numbering Plan

（重定向自Exchange Code）

Letters of the alphabet are mapped to the digits of the telephone dial pad.

The North American Numbering Plan (NANP) is a telephone numbering plan that encompasses 25 distinct regions in twenty countries primarily in North America, including the Caribbean and the U.S. territories. Not all North American countries participate in the NANP. Each participating country forms a regulatory authority that has plenary control over local numbering resources.

单词	Exchange Code
释义	Exchange Code 原声例句 TED演讲（视频版） 2018年3月合集 Consider again exchanging the code for the lock with James Bond. 再次考虑与詹姆斯·邦德交换锁的密码。英语百科 North American Numbering Plan （重定向自Exchange Code） The North American Numbering Plan (NANP) is a telephone numbering plan that encompasses 25 distinct regions in twenty countries primarily in North America, including the Caribbean and the U.S. territories. Not all North American countries participate in the NANP. Each participating country forms a regulatory authority that has plenary control over local numbering resources.
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