{
  "url": "https://phonelookup.dev/prefix/us-743",
  "npa": "743",
  "slug": "us-743",
  "iso": "US",
  "country": "United States",
  "regions": [
    {
      "code": "NC",
      "name": "North Carolina",
      "exchanges": 175
    }
  ],
  "exchanges": 175,
  "known": 160,
  "byLineType": {
    "fixed_line": 19,
    "mobile": 43,
    "unknown": 15,
    "voip": 98
  },
  "carriers": [
    {
      "name": "Onvoy",
      "exchanges": 36,
      "byLineType": {
        "voip": 36
      },
      "ranges": [
        "200",
        "226",
        "228",
        "260",
        "263–264",
        "270–274",
        "278–280",
        "290",
        "292–294",
        "333–334",
        "337",
        "344",
        "347",
        "373",
        "393",
        "437",
        "473",
        "500",
        "637",
        "730",
        "734",
        "740",
        "767",
        "774",
        "800",
        "910"
      ]
    },
    {
      "name": "Ton80 Communications",
      "exchanges": 21,
      "byLineType": {
        "voip": 21
      },
      "ranges": [
        "322",
        "342",
        "353",
        "374",
        "439",
        "542",
        "557",
        "583",
        "586",
        "625–626",
        "636",
        "642",
        "647",
        "649",
        "727",
        "746",
        "762",
        "795",
        "832",
        "837"
      ]
    },
    {
      "name": "T-Mobile",
      "exchanges": 14,
      "byLineType": {
        "mobile": 14
      },
      "ranges": [
        "210",
        "214",
        "218",
        "224",
        "232",
        "238–240",
        "250",
        "255",
        "268",
        "275",
        "285",
        "336"
      ]
    },
    {
      "name": "Verizon",
      "exchanges": 13,
      "byLineType": {
        "mobile": 13
      },
      "ranges": [
        "202",
        "207",
        "216",
        "220",
        "236",
        "244",
        "248",
        "256",
        "261",
        "267",
        "269",
        "284",
        "291"
      ]
    },
    {
      "name": "Fractel",
      "exchanges": 11,
      "byLineType": {
        "voip": 11
      },
      "ranges": [
        "234",
        "300",
        "345",
        "356",
        "400",
        "465",
        "529",
        "600",
        "666",
        "766",
        "900"
      ]
    },
    {
      "name": "Bandwidth.com",
      "exchanges": 10,
      "byLineType": {
        "voip": 10
      },
      "ranges": [
        "203",
        "205",
        "212–213",
        "215",
        "221",
        "233",
        "251",
        "259",
        "962"
      ]
    },
    {
      "name": "Emergency Networks",
      "exchanges": 9,
      "byLineType": {
        "mobile": 9
      },
      "ranges": [
        "225",
        "231",
        "237",
        "296",
        "343",
        "369",
        "887",
        "901–902"
      ]
    },
    {
      "name": "Spectrum",
      "exchanges": 7,
      "byLineType": {
        "fixed_line": 7
      },
      "ranges": [
        "206",
        "227",
        "243",
        "246–247",
        "277",
        "283"
      ]
    },
    {
      "name": "AT&T",
      "exchanges": 4,
      "byLineType": {
        "fixed_line": 1,
        "mobile": 3
      },
      "ranges": [
        "219",
        "241",
        "254",
        "262"
      ]
    },
    {
      "name": "COMMIO LLC",
      "exchanges": 4,
      "byLineType": {
        "voip": 4
      },
      "ranges": [
        "265–266",
        "770",
        "867"
      ]
    },
    {
      "name": "Dish Wireless",
      "exchanges": 3,
      "byLineType": {
        "mobile": 3
      },
      "ranges": [
        "242",
        "245",
        "288"
      ]
    },
    {
      "name": "Lumen",
      "exchanges": 3,
      "byLineType": {
        "fixed_line": 3
      },
      "ranges": [
        "201",
        "252–253"
      ]
    },
    {
      "name": "Skyetel",
      "exchanges": 3,
      "byLineType": {
        "voip": 3
      },
      "ranges": [
        "217",
        "330",
        "433"
      ]
    },
    {
      "name": "Five9",
      "exchanges": 2,
      "byLineType": {
        "fixed_line": 2
      },
      "ranges": [
        "281–282"
      ]
    },
    {
      "name": "HD Carrier",
      "exchanges": 2,
      "byLineType": {
        "voip": 2
      },
      "ranges": [
        "286",
        "643"
      ]
    },
    {
      "name": "Peerless Network",
      "exchanges": 2,
      "byLineType": {
        "voip": 2
      },
      "ranges": [
        "888",
        "999"
      ]
    },
    {
      "name": "TELNYX",
      "exchanges": 2,
      "byLineType": {
        "voip": 2
      },
      "ranges": [
        "444",
        "777"
      ]
    },
    {
      "name": "Brightlink Communications",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "235"
      ]
    },
    {
      "name": "CSC Wireless LLC",
      "exchanges": 1,
      "byLineType": {
        "mobile": 1
      },
      "ranges": [
        "209"
      ]
    },
    {
      "name": "Comcast",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "258"
      ]
    },
    {
      "name": "Exiant",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "229"
      ]
    },
    {
      "name": "IP Horizon",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "230"
      ]
    },
    {
      "name": "Leap Telecom",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "287"
      ]
    },
    {
      "name": "North State Comm Advanced Service",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "223"
      ]
    },
    {
      "name": "Nuso",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "257"
      ]
    },
    {
      "name": "Paetec Itel",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "249"
      ]
    },
    {
      "name": "Terra Nova Telecom",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "222"
      ]
    },
    {
      "name": "Twilio International",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "895"
      ]
    },
    {
      "name": "Vonage",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "208"
      ]
    },
    {
      "name": "Wavenation",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "289"
      ]
    },
    {
      "name": "Wide Voice",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "413"
      ]
    }
  ],
  "grid": "vfmvuvfmvmmuvvmvmvmmmvvfmmvfvvvmmvvvmmmmmfmfmmffmfmvffmmmfvvvmmvvvvmmmvvvvvm-fvvvfffmmvfmfvmvvv-m---v----------u----------v-------v--vv-mv----vmvv-v-----v--v------------m---vv------------------v------v----------u-f-------------------v---v-v----v--------------------v-------v--------------------------v----------u-----------------v------------v------------u-v-------------------------v--v-------------v----------u-------------vv---------vv----vv---v-v----------------v---------------------------------u----------u---------------v--v---v-----v-----v---------------v---vv--v---v--v-----------------v----v----------u--------------------v----v-----------------------------v-------------------mv------v----vmm-------vu--------------------------------------u-------uu--v-------------u----------------------v",
  "patterns": {
    "all": "^\\+1743[2-9]\\d{6}$",
    "fixed_line": "^\\+1743(?:2(?:0[16]|2[37]|4[13679]|5[237]|77|8[1-379])|413)\\d{4}$",
    "mobile": "^\\+1743(?:2(?:0[279]|1[04689]|2[045]|3[126-9]|4[02458]|5[04-6]|6[127-9]|75|8[458]|9[16])|3(?:36|43|69)|887|90[12])\\d{4}$",
    "voip": "^\\+1743(?:2(?:0[0358]|1[2357]|2[12689]|3[03-5]|5[189]|6[03-6]|7[0-489]|8[06]|9[02-4])|3(?:00|22|3[0347]|4[2457]|5[36]|7[34]|93)|4(?:00|3[379]|44|65|73)|5(?:00|29|42|57|8[36])|6(?:00|2[56]|3[67]|4[2379]|66)|7(?:27|3[04]|4[06]|6[267]|7[047]|95)|8(?:00|3[27]|67|88|95)|9(?:[01]0|62|99))\\d{4}$"
  },
  "sandbox": {
    "input": "+17435550123",
    "valid": true,
    "type": "Fixed line or mobile",
    "region": "US",
    "formats": {
      "e164": "+17435550123",
      "international": "+1 743-555-0123",
      "national": "(743) 555-0123",
      "rfc3966": "tel:+1-743-555-0123"
    },
    "parts": {
      "countryCode": "+1",
      "destinationCode": "743",
      "destinationKind": "area code",
      "subscriber": "5550123"
    }
  },
  "faq": [
    {
      "question": "Where is area code 743?",
      "answer": "Area code 743 is in North Carolina, in the United States: all 175 of its exchanges on record are there. From abroad it is dialled +1 743, then the seven-digit number."
    },
    {
      "question": "Is a 743 number mobile or landline?",
      "answer": "Either: in the North American Numbering Plan the line type belongs to the exchange (the three digits after the area code), not to the area code. Of the 175 exchanges on record in 743, 43 (25%) were allocated as mobile, 19 (11%) as fixed line, 98 (56%) as VoIP and 15 (9%) have no line type on record. A number can have been ported since, to another carrier and even to another line type."
    },
    {
      "question": "Which carriers have numbers in area code 743?",
      "answer": "31 carriers hold exchanges in 743 on record; the most: Onvoy (36), Ton80 Communications (21) and T-Mobile (14). These are the original allocations: with number portability, a number may be served by another carrier today, which only a live carrier lookup (an HLR or MNP query) can tell."
    },
    {
      "question": "How do I validate a 743 phone number?",
      "answer": "In E.164 a 743 number matches ^\\+1743[2-9]\\d{6}$: +1, the area code, a central office code that does not start with 0 or 1, then four digits. Written nationally it reads (743) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP."
    }
  ],
  "neighbours": {
    "sameRegion": [
      "us-252",
      "us-336",
      "us-472",
      "us-704",
      "us-828",
      "us-910",
      "us-919",
      "us-980",
      "us-984"
    ],
    "previous": "ca-742",
    "next": "us-747"
  },
  "meta": {
    "dataAsOf": "2026-10-25",
    "dataPoints": 175,
    "references": [
      {
        "authority": "NANPA",
        "title": "North American Numbering Plan Administrator",
        "url": "https://nanpa.com/"
      },
      {
        "authority": "CNAC",
        "title": "Canadian Numbering Administrator",
        "url": "https://www.cnac.ca/"
      },
      {
        "authority": "ITU",
        "title": "National numbering plan: United States",
        "url": "https://www.itu.int/oth/T02020000DE/en"
      }
    ]
  }
}