{
  "url": "https://phonelookup.dev/prefix/us-878",
  "npa": "878",
  "slug": "us-878",
  "iso": "US",
  "country": "United States",
  "regions": [
    {
      "code": "PA",
      "name": "Pennsylvania",
      "exchanges": 204
    }
  ],
  "exchanges": 204,
  "known": 190,
  "byLineType": {
    "fixed_line": 27,
    "mobile": 48,
    "unknown": 14,
    "voip": 115
  },
  "carriers": [
    {
      "name": "Onvoy",
      "exchanges": 51,
      "byLineType": {
        "voip": 51
      },
      "ranges": [
        "205–206",
        "216",
        "222",
        "225–226",
        "231–232",
        "251",
        "257",
        "262",
        "269",
        "277–278",
        "281–284",
        "286–287",
        "298–299",
        "303",
        "305–307",
        "333",
        "378",
        "400",
        "444",
        "477",
        "666",
        "728",
        "768",
        "777–778",
        "788–789",
        "847",
        "870",
        "877",
        "879–881",
        "884",
        "887–888",
        "898",
        "900",
        "978",
        "999"
      ]
    },
    {
      "name": "Ton80 Communications",
      "exchanges": 19,
      "byLineType": {
        "voip": 19
      },
      "ranges": [
        "252–253",
        "288",
        "322",
        "335",
        "433",
        "598–599",
        "626",
        "673",
        "723",
        "732",
        "736",
        "782–784",
        "786",
        "834",
        "844"
      ]
    },
    {
      "name": "T-Mobile",
      "exchanges": 15,
      "byLineType": {
        "mobile": 15
      },
      "ranges": [
        "221",
        "227",
        "234",
        "236",
        "244–245",
        "247",
        "249",
        "264",
        "289–290",
        "293",
        "295–296",
        "355"
      ]
    },
    {
      "name": "Emergency Networks",
      "exchanges": 14,
      "byLineType": {
        "mobile": 14
      },
      "ranges": [
        "255",
        "301",
        "329",
        "489",
        "522",
        "587",
        "707",
        "744",
        "780",
        "808",
        "840",
        "868",
        "878",
        "988"
      ]
    },
    {
      "name": "Verizon",
      "exchanges": 13,
      "byLineType": {
        "fixed_line": 6,
        "mobile": 7
      },
      "ranges": [
        "208",
        "212",
        "218",
        "220",
        "229",
        "254",
        "274",
        "313",
        "379",
        "439",
        "545",
        "553",
        "645"
      ]
    },
    {
      "name": "Fractel",
      "exchanges": 11,
      "byLineType": {
        "voip": 11
      },
      "ranges": [
        "336",
        "345",
        "348",
        "356",
        "377",
        "465",
        "500",
        "529",
        "677",
        "688",
        "787"
      ]
    },
    {
      "name": "AT&T",
      "exchanges": 8,
      "byLineType": {
        "fixed_line": 2,
        "mobile": 6
      },
      "ranges": [
        "224",
        "250",
        "256",
        "263",
        "267–268",
        "294",
        "297"
      ]
    },
    {
      "name": "COMMIO LLC",
      "exchanges": 7,
      "byLineType": {
        "voip": 7
      },
      "ranges": [
        "259",
        "275–276",
        "279–280",
        "670",
        "867"
      ]
    },
    {
      "name": "Comcast",
      "exchanges": 7,
      "byLineType": {
        "voip": 7
      },
      "ranges": [
        "207",
        "219",
        "239",
        "246",
        "260",
        "272–273"
      ]
    },
    {
      "name": "Bandwidth.com",
      "exchanges": 6,
      "byLineType": {
        "voip": 6
      },
      "ranges": [
        "213",
        "233",
        "241–242",
        "265",
        "309"
      ]
    },
    {
      "name": "Lumen",
      "exchanges": 6,
      "byLineType": {
        "fixed_line": 3,
        "voip": 3
      },
      "ranges": [
        "203",
        "217",
        "228",
        "261",
        "271",
        "332"
      ]
    },
    {
      "name": "Dish Wireless",
      "exchanges": 5,
      "byLineType": {
        "mobile": 5
      },
      "ranges": [
        "200",
        "209",
        "215",
        "292",
        "300"
      ]
    },
    {
      "name": "Windstream",
      "exchanges": 4,
      "byLineType": {
        "fixed_line": 4
      },
      "ranges": [
        "204",
        "210",
        "266",
        "668"
      ]
    },
    {
      "name": "Access2Go",
      "exchanges": 2,
      "byLineType": {
        "voip": 2
      },
      "ranges": [
        "237",
        "285"
      ]
    },
    {
      "name": "CoreTel",
      "exchanges": 2,
      "byLineType": {
        "fixed_line": 2
      },
      "ranges": [
        "678",
        "837"
      ]
    },
    {
      "name": "Peerless Network",
      "exchanges": 2,
      "byLineType": {
        "voip": 2
      },
      "ranges": [
        "201",
        "302"
      ]
    },
    {
      "name": "Salsgiver Telecom",
      "exchanges": 2,
      "byLineType": {
        "fixed_line": 2
      },
      "ranges": [
        "258",
        "422"
      ]
    },
    {
      "name": "TELNYX",
      "exchanges": 2,
      "byLineType": {
        "voip": 2
      },
      "ranges": [
        "235",
        "243"
      ]
    },
    {
      "name": "Armstrong Telecommunications",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "425"
      ]
    },
    {
      "name": "CSC Wireless LLC",
      "exchanges": 1,
      "byLineType": {
        "mobile": 1
      },
      "ranges": [
        "223"
      ]
    },
    {
      "name": "HD Carrier",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "230"
      ]
    },
    {
      "name": "HTC Communications",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "291"
      ]
    },
    {
      "name": "IDT America",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "214"
      ]
    },
    {
      "name": "Laurel Highland Telephone Company",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "238"
      ]
    },
    {
      "name": "North Pittsburgh Telephone Company",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "270"
      ]
    },
    {
      "name": "Paetec Itel",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "248"
      ]
    },
    {
      "name": "Skyetel",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "822"
      ]
    },
    {
      "name": "Spectrum",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "202"
      ]
    },
    {
      "name": "Terra Nova Telecom",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "600"
      ]
    },
    {
      "name": "Twilio International",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "895"
      ]
    },
    {
      "name": "Vonage",
      "exchanges": 1,
      "byLineType": {
        "voip": 1
      },
      "ranges": [
        "240"
      ]
    },
    {
      "name": "Wiretap Telecom",
      "exchanges": 1,
      "byLineType": {
        "fixed_line": 1
      },
      "ranges": [
        "800"
      ]
    }
  ],
  "grid": "mvfvfvvvfmfumvfmvfmvfmvmmvvmvmvvvvmvmvfvvvvvmmvmfmmvvvfmfvfvvfvmmvfmfvfvvvfvvvvvvvvvvvvvvmmfmmmmmmvvmmvv-vvv-v-u-m--------v------m--fv-vv--------v--v------mv--------------------vvm--------------------v----------u----------f--f-------v-----f----v--------------------v-----------v-----------m----------v----------u----------m------v---------------m-------f-u-------------------------------m----------vvv----------u--------------v------------------m--------------------v-f-v--v---vf---------v-----------u------m---u-----------v----v---v---v-------m-----------------------v--------vv-m-vvv-vvvv----------f-------m--u----------v-----------v--f--m---v--v-------------------vm-v------vmvvv--v--vv------v--v-v----------u--------------------------------------u-------uu----------------u-v---------m----------v",
  "patterns": {
    "all": "^\\+1878[2-9]\\d{6}$",
    "fixed_line": "^\\+1878(?:2(?:0[248]|1[047]|20|[34]8|5[468]|6[168]|7[04]|91)|332|4(?:2[25]|39)|553|6[67]8|8(?:00|37))\\d{4}$",
    "mobile": "^\\+1878(?:2(?:0[09]|1[258]|2[13479]|3[46]|4[4579]|5[05]|6[347]|89|9[02-7])|3(?:0[01]|13|[27]9|55)|489|5(?:22|45|87)|645|7(?:07|44|80)|8(?:[067]8|40)|988)\\d{4}$",
    "voip": "^\\+1878(?:2(?:0[135-7]|1[369]|2[2568]|3[0-3579]|4[0-36]|5[1-379]|6[0259]|7[1-35-9]|8[0-8]|9[89])|3(?:0[235-79]|22|3[356]|4[58]|56|7[78])|4(?:00|33|44|65|77)|5(?:00|29|9[89])|6(?:00|[26]6|7[037]|88)|7(?:2[38]|3[26]|68|7[78]|8[2-46-9])|8(?:22|34|4[47]|67|7[079]|8[01478]|9[58])|9(?:00|78|99))\\d{4}$"
  },
  "sandbox": {
    "input": "+18785550123",
    "valid": true,
    "type": "Fixed line or mobile",
    "region": "US",
    "formats": {
      "e164": "+18785550123",
      "international": "+1 878-555-0123",
      "national": "(878) 555-0123",
      "rfc3966": "tel:+1-878-555-0123"
    },
    "parts": {
      "countryCode": "+1",
      "destinationCode": "878",
      "destinationKind": "area code",
      "subscriber": "5550123"
    }
  },
  "faq": [
    {
      "question": "Where is area code 878?",
      "answer": "Area code 878 is in Pennsylvania, in the United States: all 204 of its exchanges on record are there. From abroad it is dialled +1 878, then the seven-digit number."
    },
    {
      "question": "Is a 878 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 204 exchanges on record in 878, 48 (24%) were allocated as mobile, 27 (13%) as fixed line, 115 (56%) as VoIP and 14 (7%) 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 878?",
      "answer": "32 carriers hold exchanges in 878 on record; the most: Onvoy (51), Ton80 Communications (19) and T-Mobile (15). 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 878 phone number?",
      "answer": "In E.164 a 878 number matches ^\\+1878[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 (878) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP."
    }
  ],
  "neighbours": {
    "sameRegion": [
      "us-215",
      "us-223",
      "us-267",
      "us-272",
      "us-412",
      "us-445",
      "us-484",
      "us-570",
      "us-582",
      "us-610",
      "us-717",
      "us-724",
      "us-814",
      "us-835"
    ],
    "previous": "ca-873",
    "next": "us-901"
  },
  "meta": {
    "dataAsOf": "2026-10-25",
    "dataPoints": 204,
    "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"
      }
    ]
  }
}