{
  "url": "https://phonelookup.dev/prefix/us-820",
  "npa": "820",
  "slug": "us-820",
  "iso": "US",
  "country": "United States",
  "regions": [
    {
      "code": "CA",
      "name": "California",
      "exchanges": 112
    }
  ],
  "exchanges": 112,
  "known": 98,
  "byLineType": {
    "fixed_line": 4,
    "mobile": 37,
    "unknown": 14,
    "voip": 57
  },
  "carriers": [
    {
      "name": "Fractel",
      "exchanges": 32,
      "byLineType": {
        "voip": 32
      },
      "ranges": [
        "222",
        "234",
        "288",
        "299",
        "333",
        "336",
        "345–346",
        "348",
        "356",
        "386",
        "432",
        "444",
        "465",
        "500",
        "529",
        "587",
        "600",
        "666–667",
        "732",
        "758",
        "777",
        "786",
        "799",
        "800",
        "822",
        "842",
        "899",
        "900",
        "946",
        "999"
      ]
    },
    {
      "name": "AT&T",
      "exchanges": 18,
      "byLineType": {
        "mobile": 18
      },
      "ranges": [
        "204–205",
        "207",
        "210",
        "212–215",
        "218",
        "221",
        "229–230",
        "238–239",
        "245",
        "250",
        "253–254"
      ]
    },
    {
      "name": "Onvoy",
      "exchanges": 12,
      "byLineType": {
        "voip": 12
      },
      "ranges": [
        "226",
        "242–244",
        "247–248",
        "251–252",
        "300",
        "380",
        "823",
        "998"
      ]
    },
    {
      "name": "T-Mobile",
      "exchanges": 8,
      "byLineType": {
        "mobile": 8
      },
      "ranges": [
        "203",
        "206",
        "225",
        "235",
        "237",
        "241",
        "246",
        "249"
      ]
    },
    {
      "name": "Verizon",
      "exchanges": 5,
      "byLineType": {
        "mobile": 5
      },
      "ranges": [
        "223",
        "227",
        "231–232",
        "255"
      ]
    },
    {
      "name": "COMMIO LLC",
      "exchanges": 3,
      "byLineType": {
        "voip": 3
      },
      "ranges": [
        "219–220",
        "224"
      ]
    },
    {
      "name": "Dish Wireless",
      "exchanges": 2,
      "byLineType": {
        "mobile": 2
      },
      "ranges": [
        "216–217"
      ]
    },
    {
      "name": "Emergency Networks",
      "exchanges": 2,
      "byLineType": {
        "mobile": 2
      },
      "ranges": [
        "502",
        "850"
      ]
    },
    {
      "name": "Ton80 Communications",
      "exchanges": 2,
      "byLineType": {
        "voip": 2
      },
      "ranges": [
        "426",
        "837"
      ]
    },
    {
      "name": "Twilio International",
      "exchanges": 2,
      "byLineType": {
        "voip": 2
      },
      "ranges": [
        "228",
        "400"
      ]
    },
    {
      "name": "8x8",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "880"
      ]
    },
    {
      "name": "Advanced Telecom Solutions",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "200"
      ]
    },
    {
      "name": "Bandwidth.com",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "209"
      ]
    },
    {
      "name": "Brightlink Communications",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "236"
      ]
    },
    {
      "name": "CSC Wireless LLC",
      "exchanges": 1,
      "byLineType": {
        "mobile": 1
      },
      "ranges": [
        "202"
      ]
    },
    {
      "name": "HD Carrier",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "280"
      ]
    },
    {
      "name": "Leap Telecom",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "233"
      ]
    },
    {
      "name": "Opentact",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "820"
      ]
    },
    {
      "name": "Shelltel",
      "exchanges": 1,
      "byLineType": {
        "mobile": 1
      },
      "ranges": [
        "201"
      ]
    },
    {
      "name": "Terra Nova Telecom",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "888"
      ]
    },
    {
      "name": "Tpx Communications",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "208"
      ]
    },
    {
      "name": "Wavenation",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "240"
      ]
    }
  ],
  "grid": "vmmmmmmmfvmummmmmmmvvmvmvmvmvmmmmfvmvmmmfmvvvmmvvmmvvmmm------------------------v-------v----------vv----------u---------------------v--v--------vv-v-------v-----------------------v-----v-------------v----------u--------------v-----v-----------v--------------------v----------------------------------v-m--------u-----------------v-------------------------u-------------------------------v------------v----------u------------------------------------------------------vv--------------------------------u----------u--------------------v-------------------------v------------------v--------v------------vv----------u--------f-vv-------------v----v-------m-----------------------------v-------v----------vv----------u----------------------------------v---u-------uu----------------u---------------------vv",
  "patterns": {
    "all": "^\\+1820[2-9]\\d{6}$",
    "fixed_line": "^\\+1820(?:2(?:08|33|40)|820)\\d{4}$",
    "mobile": "^\\+1820(?:2(?:0[1-7]|1[02-8]|2[13579]|3[0-257-9]|4[1569]|5[03-5])|502|850)\\d{4}$",
    "voip": "^\\+1820(?:2(?:0[09]|[19]9|2[02468]|3[46]|4[2-478]|5[12]|8[08])|3(?:00|3[36]|4[568]|56|8[06])|4(?:00|26|32|44|65)|5(?:00|29|87)|6(?:00|6[67])|7(?:32|58|77|86|99)|8(?:00|2[23]|37|42|8[08]|99)|9(?:00|46|9[89]))\\d{4}$"
  },
  "sandbox": {
    "input": "+18205550123",
    "valid": true,
    "type": "Fixed line or mobile",
    "region": "US",
    "formats": {
      "e164": "+18205550123",
      "international": "+1 820-555-0123",
      "national": "(820) 555-0123",
      "rfc3966": "tel:+1-820-555-0123"
    },
    "parts": {
      "countryCode": "+1",
      "destinationCode": "820",
      "destinationKind": "area code",
      "subscriber": "5550123"
    }
  },
  "faq": [
    {
      "question": "Where is area code 820?",
      "answer": "Area code 820 is in California, in the United States: all 112 of its exchanges on record are there. From abroad it is dialled +1 820, then the seven-digit number."
    },
    {
      "question": "Is a 820 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 112 exchanges on record in 820, 37 (33%) were allocated as mobile, 4 (4%) as fixed line, 57 (51%) as VoIP and 14 (13%) 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 820?",
      "answer": "22 carriers hold exchanges in 820 on record; the most: Fractel (32), AT&T (18) and Onvoy (12). 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 820 phone number?",
      "answer": "In E.164 a 820 number matches ^\\+1820[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 (820) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP."
    }
  ],
  "neighbours": {
    "sameRegion": [
      "us-209",
      "us-213",
      "us-279",
      "us-310",
      "us-323",
      "us-341",
      "us-350",
      "us-369",
      "us-408",
      "us-415",
      "us-424",
      "us-442",
      "us-510",
      "us-530",
      "us-559",
      "us-562",
      "us-619",
      "us-626",
      "us-628",
      "us-650",
      "us-657",
      "us-661",
      "us-669",
      "us-707",
      "us-714",
      "us-738",
      "us-747",
      "us-760",
      "us-805",
      "us-818",
      "us-831",
      "us-840",
      "us-858",
      "us-909",
      "us-916",
      "us-925",
      "us-949",
      "us-951"
    ],
    "previous": "ca-819",
    "next": "us-821"
  },
  "meta": {
    "dataAsOf": "2026-10-25",
    "dataPoints": 112,
    "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"
      }
    ]
  }
}