Telephone numbering plan

A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing. Telephone numbering plans are defined in each of administrative regions of the public switched telephone network (PSTN) and they are also present in private telephone networks.

Numbering plans may follow a variety of design strategies which have often arisen from the historical evolution of individual telephone networks and local requirements. A broad division is commonly recognized, distinguishing open numbering plans and closed numbering plans. A closed numbering plan imposes a fixed number of digits to every telephone number, while an open numbering plan allows variance in the numbers of digits. Many numbering plans subdivide their territory of service into geographic regions designated by an area code, which is a fixed-length or variable-length set of digits forming the most-significant part of the dialing sequence to reach a telephone subscriber.

Telephone numbers in the Americas

Canada, the United States and some Caribbean countries use the country calling code 1. Local area codes in these countries are managed by the North American Numbering Plan.

Greenland and Aruba have a country calling code that has the number "2" as first digit, which mostly is used by countries in Africa. All other countries use codes that start with "5".

North American Numbering Plan

Country Code: +1
International Call Prefix: 011
Trunk Prefix: 1

In the United States (including its territories), Canada, Bermuda, and 18 Caribbean nations, area codes are regulated by the North American Numbering Plan. Currently, all area codes (officially called numbering plan areas) in the NANP must have 3 digits. Historically, the second digit was always "0" or "1", while the second digit of the 3-digit exchange prefix was never "0" or "1." With the increased demand for area codes because of additional lines, FAX lines, pagers, cell phones, etc., the restrictions on the second digit were lifted in 1995. At the same time, the historic restriction on a local (7-digit) telephone number's second digit, which previously could not be a "0" or "1" (to avoid confusion with area codes), was also lifted. Under the new rules, a telephone number such as (378) 400-1234 is perfectly legal, whereas before 1995 it was not permitted.

Telephone numbers in Asia

States and territories with country calling codes

States and territories without a separate country calling code

See also

  • Telephone numbering plan
  • List of country calling codes
  • List of international call prefixes
  • Category:Telephone numbers by country
  • Podcasts:

    PLAYLIST TIME:

    Area Codes

    by: Ludacris

    Featuring: Nate Dogg
    I've got hoes
    (I've got hoes)
    In different area codes, area codes
    (Area, codes)
    Hoes
    (Hoes,hoes)
    In different area codes, area codes
    (Area, codes)
    Now you thought I was just 7-7-0, and 4-0-4?
    I'm worldwide, bitch act like y'all know, it's the abominabol-hoe man
    Globe-trot international post man, neighbor-dick dope man
    7-1-8's, 2-0-2's, I send small cities and states I-O-U's
    9-0-1, matter fact 3-0-5, I'll jump off the G4, we can meet outside
    So control your hormones and keep your drawers on
    'Til I close the door and I'm jumping your bones
    3-1-2's, 3-1-3's, 2-1-5's, 8-0-tree's
    Read your horoscope and eat some horderves
    Ten on pump one, these hoes is self serve
    7-5-7, 4-1-0's, my cell phone just overloads
    I've got hoes
    (I've got hoes)
    In different area codes, area codes
    (Area, codes)
    Hoes
    (Hoes,hoes)
    In different area codes, area codes
    (Area, codes)
    Now everyday is a hoe-ly day, so stop the violence
    And put the 4-4 away, skeet shoot a hoe today
    5-0-4, 9-7-2's, 7-1-tree, whatcha gon' do?
    You checkin' out the scene, I'm checkin' a hoe tonight
    With perpendicular, vehicular homicide
    3-1-4, 2-0-1, too much green, too much fun
    I bang cock in Bangkok, can't stop, I turn and hit the same spot
    Think not, I'm the thriller in Manilla
    Schlong in Hong Kong, pimp 'em like Bishop, Magic, Don Juan
    Man after Henny with a coke and a smile
    I just pick up the motherfuckin' phone and dial
    I got my condoms in a big ass sack
    I'm slangin' this dick like a New Jack
    (Biatch)
    Is it 'cuz they like my gangsta walk?
    (Gangsta walk)
    Is it 'cuz they like my gangsta talk?
    (Gangsta talk, ohh)
    Is it 'cuz they like my handsome face?
    (Handsome face)
    Is it 'cuz they like my gangsta ways?
    (Gangsta talk, ohh)
    Whatever it is, they love it, and they just won't let me be
    I handles my biz, don't rush me, just relax and let me be free
    Whenever I call, come runnin' 2-1-2 or 2-1-3
    You know that I ball, stop frontin' or I'll call my substitute freak
    (Hoes)
    I've got hoes
    (I've got hoes)
    In different area codes, area codes
    (Area, codes)
    Hoes
    (Hoes,hoes)
    In different area codes, area codes
    (Area, codes)
    Uh, 9-1-6, 4-1-5, 7-0-4, shout out to the 2-0-6
    Everybody in the 8-0-8, ha-ah, 2-1-6, 7-0-2, 4-1-4
    3-1-7, 2-1-4's and the 2-8-1's, 3-3-4, 2-0-5, I see ya
    Uh-uh, 3-1-8, 6-0-1's, 2-0-tree, 8-0-4, 4-0-2, 3-0-1
    9-0-4, 4-0-7, 8-5-0, 7-0-8, 5-0-2
    Hoes in different area codes, know that
    Southern Hoes-pitality, Northern Exhoes-ure
    Ha-ha, hoe ridin' on the West coast
    Ya understand what I'm sayin'?
    Uh-uh, hoe-cus pocus, you the dopest
    Uh, hoes to the right, hoes to the left, five hoes this time
    Whoo! Hoe-no!
    The Hip-hop hoeoller-coster, that's what we on right now
    Ha-ha, no need to get all hoes-tile
    Yeah! Whoo!
    Def Jam South baby, Disturbing Tha Peace
    Dazaphy-zy, Uncle Face




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