{ "url": "https://phonelookup.dev/prefix/us-319", "npa": "319", "slug": "us-319", "iso": "US", "country": "United States", "regions": [ { "code": "IA", "name": "Iowa", "exchanges": 579 } ], "exchanges": 579, "known": 565, "byLineType": { "fixed_line": 350, "mobile": 143, "unknown": 14, "voip": 72 }, "carriers": [ { "name": "Lumen", "exchanges": 115, "byLineType": { "fixed_line": 111, "voip": 4 }, "ranges": [ "205", "207", "216", "218", "221–222", "226", "232–236", "243", "247", "249", "263", "266", "268", "272–274", "277", "281", "283", "286–287", "291–292", "294–298", "306–307", "309", "314", "334–335", "337–339", "341", "346", "351–356", "358", "362–366", "368–369", "372–373", "375–378", "384", "386", "388", "390", "393", "395–396", "398–399", "435", "447", "462", "465–467", "472", "483", "502", "524", "526", "558", "654", "678", "688", "743", "752–754", "758", "768", "774", "784", "786", "820", "832–834", "849", "859", "861–862", "866", "874", "887–888", "895–896", "983–984", "988–989" ] }, { "name": "Windstream", "exchanges": 65, "byLineType": { "fixed_line": 65 }, "ranges": [ "220", "224", "245", "253–254", "257–258", "299", "344–345", "347", "367", "385", "438", "444", "448", "455–456", "463", "469", "474", "478", "523", "528", "552", "628–629", "635–636", "642", "644–645", "648", "653", "657–658", "662", "668", "694–696", "698", "720", "722–723", "725–726", "728–729", "766", "789", "824", "835–839", "863", "865", "878", "881", "884", "938", "986–987" ] }, { "name": "Verizon", "exchanges": 41, "byLineType": { "fixed_line": 2, "mobile": 39 }, "ranges": [ "212–213", "217", "230", "270", "290", "308", "321", "329", "331", "360", "371", "389", "417", "427", "440", "450", "452", "458", "460", "481", "488", "497", "505", "510", "520", "529", "531", "541", "640", "660–661", "677", "750", "800", "823", "830", "850", "853", "883", "899" ] }, { "name": "T-Mobile", "exchanges": 40, "byLineType": { "mobile": 40 }, "ranges": [ "202", "209–210", "241", "280", "288", "300", "340", "412", "414", "419", "431", "457", "471", "473", "486", "493", "496", "499", "501", "504", "508–509", "521", "533", "537", "548", "554", "561", "594", "601", "619", "621", "631", "651", "821", "936", "961", "981", "990" ] }, { "name": "UScellular", "exchanges": 39, "byLineType": { "mobile": 39 }, "ranges": [ "201", "215", "231", "239–240", "264", "269", "271", "310", "325", "327", "330", "350", "361", "404", "407", "415", "428–430", "461", "470", "480", "530", "540", "550–551", "559–560", "572", "591", "721", "759", "795", "929–931", "939", "975" ] }, { "name": "Mcc Telephony", "exchanges": 33, "byLineType": { "fixed_line": 33 }, "ranges": [ "203", "214", "225", "244", "262", "282", "285", "301", "312", "322", "328", "333", "336", "357", "359", "408", "421", "445", "459", "495", "543", "569", "578", "585", "595", "633", "652", "674", "745", "779", "826", "844", "877" ] }, { "name": "AT&T", "exchanges": 22, "byLineType": { "fixed_line": 7, "mobile": 15 }, "ranges": [ "229", "242", "251–252", "323–324", "374", "383", "400–401", "406", "423", "464", "491", "512", "573", "610", "614", "669–670", "693", "855" ] }, { "name": "Onvoy", "exchanges": 22, "byLineType": { "voip": 22 }, "ranges": [ "238", "246", "250", "319", "413", "420", "422", "432", "449", "468", "487", "490", "492", "538–539", "575", "602", "712", "719", "727", "804", "933" ] }, { "name": "Ton80 Communications", "exchanges": 17, "byLineType": { "voip": 17 }, "ranges": [ "426", "566", "588", "663", "675", "733", "742", "746", "767", "776", "922", "942", "966", "992", "995–997" ] }, { "name": "Paetec Itel", "exchanges": 16, "byLineType": { "fixed_line": 16 }, "ranges": [ "208", "248", "261", "265", "409", "433", "485", "553", "576", "596", "730–731", "734", "739", "790", "892" ] }, { "name": "South Slope Cooperative Telephone Company", "exchanges": 15, "byLineType": { "fixed_line": 15 }, "ranges": [ "223", "227", "545", "622", "624–626", "632", "665", "828", "841", "845–846", "848", "857" ] }, { "name": "Bandwidth.com", "exchanges": 7, "byLineType": { "voip": 7 }, "ranges": [ "284", "326", "405", "441", "451", "535", "775" ] }, { "name": "Emergency Networks", "exchanges": 7, "byLineType": { "mobile": 7 }, "ranges": [ "206", "315", "370", "387", "515", "710", "770" ] }, { "name": "Integrated Path Communications", "exchanges": 7, "byLineType": { "fixed_line": 7 }, "ranges": [ "320", "349", "589", "609", "699", "709", "799" ] }, { "name": "ALLIANCE CONNECT", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "303", "305", "410", "671", "777", "825" ] }, { "name": "Fractel", "exchanges": 6, "byLineType": { "voip": 6 }, "ranges": [ "348", "500", "600", "666", "732", "946" ] }, { "name": "LTDS Corporation", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "219", "237", "255", "313", "316", "598" ] }, { "name": "Van Buren Telephone Company", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "293", "397", "494", "498", "592", "796" ] }, { "name": "Butler-Bremer Communications", "exchanges": 5, "byLineType": { "fixed_line": 5 }, "ranges": [ "275–276", "278", "882", "885" ] }, { "name": "Cooperative Telephone Company", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "525", "623", "647", "685" ] }, { "name": "Farmers Mutual Telephone Cooperative", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "436", "443", "453", "842" ] }, { "name": "Modern Cooperative Telephone Company", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "639", "655", "667", "738" ] }, { "name": "East Buchanan Telephone Cooperative", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "634", "934–935" ] }, { "name": "Keystone Farmers Cooperative Telephone Company", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "439", "442", "477" ] }, { "name": "Mediapolis Telephone Company", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "394", "937", "985" ] }, { "name": "Access2Go", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "380–381" ] }, { "name": "Airus Inc", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "302", "519" ] }, { "name": "Atkins Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "446", "999" ] }, { "name": "Brightlink Communications", "exchanges": 2, "byLineType": { "mobile": 1, "voip": 1 }, "ranges": [ "382", "503" ] }, { "name": "COMMIO LLC", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "867", "910" ] }, { "name": "Coon Creek Telecommunications", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "434", "741" ] }, { "name": "Farmers & Merchants Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "204", "549" ] }, { "name": "Farmers Cooperative Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "476", "479" ] }, { "name": "ImOn Communications", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "200", "260" ] }, { "name": "Kalona Cooperative Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "656", "864" ] }, { "name": "La Porte City Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "342", "475" ] }, { "name": "Liberty Communications", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "627", "643" ] }, { "name": "Martelle Communications Cooperative", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "425", "482" ] }, { "name": "Nuso", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "391", "416" ] }, { "name": "Olin Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "484", "489" ] }, { "name": "Sharon Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "679", "683" ] }, { "name": "Shellsburg Cablevision", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "343", "536" ] }, { "name": "TELNYX", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "259", "318" ] }, { "name": "Airespring", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "582" ] }, { "name": "CSC Wireless LLC", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "304" ] }, { "name": "Comcast", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "402" ] }, { "name": "Coon Creek Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "454" ] }, { "name": "Danville Mutual Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "392" ] }, { "name": "Dish Wireless", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "403" ] }, { "name": "Dumont Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "267" ] }, { "name": "Dunkerton Telephone Cooperative", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "822" ] }, { "name": "EdgeTe", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "880" ] }, { "name": "Exiant", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "587" ] }, { "name": "Farmers & Merchants Mutual Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "256" ] }, { "name": "Farmers Mutual Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "827" ] }, { "name": "HD Carrier", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "379" ] }, { "name": "Heart of Iowa Ventures", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "418" ] }, { "name": "IP Horizon", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "317" ] }, { "name": "Independence Telecommunications Utility", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "332" ] }, { "name": "Louisa Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "527" ] }, { "name": "MCC Telephony", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "534" ] }, { "name": "Mutual Telephone Company of Morning Sun Iowa", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "868" ] }, { "name": "North English Cooperative Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "664" ] }, { "name": "Oran Mutual Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "638" ] }, { "name": "Palo Cooperative Telephone Association", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "851" ] }, { "name": "Prairieburg Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "437" ] }, { "name": "Readlyn Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "279" ] }, { "name": "Reinbeck Municipal Telecommunications Utility", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "788" ] }, { "name": "Springville Cooperative Telephone Association", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "854" ] }, { "name": "Terra Nova Telecom", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "900" ] }, { "name": "Twilio International", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "893" ] }, { "name": "Van Horne Cooperative Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "228" ] }, { "name": "Vonage", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "289" ] }, { "name": "Wavenation", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "424" ] }, { "name": "Wellman Cooperative Telephone Association", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "646" ] }, { "name": "Wide Voice", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "701" ] } ], "grid": "fmmffvmffmmumffmfmfffffffffffmmmffffffvmmmffffvffvvfmffffffvffffmffffmmmffffffffmvffvfffmvmfffffffffmfffmfffmfmufffmfvvvfmfmmmvmfmmmffffffffmfffffffvfmfffffffffmmffffffffmmffmffffvvvmmfffmfmffffffffffmfvmmvfmfffumvmmfmfmvfvfffvmmmmmvfffffffmvfffffffvmvmffffmmfmmffffffvfmmfmffffffmmffffmvmfvfvmffmffmvmfvmm--mmmum--m---fmm-ffffffmmm-mfvfmvvmm-f-f--mfmmffmu--fmmm----v--f--mm-vf-f---v--f-vvf-mf-mff-f-vmv------fmu--m----m-mffffffff-mfffff-ffm-fffffff--mfffffff-mmfvffvffmmf--fv-mff---f-f--f----mfff-ffuf-------fmuv------vfmff-ffvffffvvf---ff-fvf-fv---m-fff---fm------fvf-m---fvvf-f----f-f-fff----mf--fm---v------u--------fmfmfffff-m-ffffffff-ff-fff-ffmf-mfm-f-f-ffffffvf-----f--ff-vffmff-fv---fv-ff--mv---------vu----------v------mmm-vffmffm--v---v---u-------uu-m----v--------mu----m-fffffffm-v--vvv-f", "patterns": { "all": "^\\+1319[2-9]\\d{6}$", "fixed_line": "^\\+1319(?:2(?:0[03478]|1[34689]|2[0-8]|3[2-7]|4[2-578]|5[13-8]|6[0-35-8]|7[2-9]|8[235-7]|9[1-9])|3(?:0[1-35-79]|1[2-46]|2[028]|[36][2-9]|4[1-79]|5[1-9]|7[235-8]|8[4-68]|9\\d)|4(?:0[1689]|1[068]|2[13-5]|3[3-9]|4[2-8]|5[3-69]|6[2-79]|7[24-9]|8[2-59]|9[14578])|5(?:02|[16]9|2[3-8]|3[46]|4[359]|5[238]|7[68]|8[59]|9[2568])|6(?:09|2[2-9]|3[2-689]|[45][2-8]|6[24578]|7[1489]|8[358]|9[4-689])|7(?:0[19]|2[0235689]|3[01489]|4[135]|5[2-48]|6[68]|7[479]|8[4689]|9[069])|8(?:2[024-8]|3[2-9]|4[124-689]|5[1479]|6[1-68]|7[478]|8[12457]|9[256])|9(?:3[4578]|8[3-9]|99))\\d{4}$", "mobile": "^\\+1319(?:2(?:0[1269]|1[0257]|29|3[019]|[47][01]|52|6[49]|8[08]|90)|3(?:0[048]|1[05]|2[13-579]|[36][01]|[45]0|7[014]|8[2379])|4(?:0[0347]|1[24579]|2[7-9]|[36][01]|40|5[0278]|7[013]|8[0168]|9[369])|5(?:0[14589]|1[025]|2[019]|3[0137]|4[018]|5[0149]|6[01]|7[23]|9[14])|6(?:[0235]1|1[049]|40|6[019]|7[07]|93)|7(?:[17]0|21|5[09]|95)|8(?:[03]0|2[13]|5[035]|83|99)|9(?:29|3[0169]|[68]1|75|90))\\d{4}$", "voip": "^\\+1319(?:2(?:05|38|4[69]|5[09]|8[149])|3(?:1[7-9]|26|48|79|8[01])|4(?:0[25]|13|2[026]|32|4[19]|51|68|87|9[02])|5(?:0[03]|3[589]|66|75|8[278])|6(?:0[02]|6[36]|75)|7(?:1[29]|[26]7|3[23]|4[26]|7[56])|8(?:04|67|8[08]|93)|9(?:[01]0|22|33|4[26]|66|9[25-7]))\\d{4}$" }, "sandbox": { "input": "+13195550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+13195550123", "international": "+1 319-555-0123", "national": "(319) 555-0123", "rfc3966": "tel:+1-319-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "319", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 319?", "answer": "Area code 319 is in Iowa, in the United States: all 579 of its exchanges on record are there. From abroad it is dialled +1 319, then the seven-digit number." }, { "question": "Is a 319 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 579 exchanges on record in 319, 143 (25%) were allocated as mobile, 350 (60%) as fixed line, 72 (12%) as VoIP and 14 (2%) 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 319?", "answer": "76 carriers hold exchanges in 319 on record; the most: Lumen (115), Windstream (65) and Verizon (41). 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 319 phone number?", "answer": "In E.164 a 319 number matches ^\\+1319[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 (319) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP." } ], "neighbours": { "sameRegion": [ "us-515", "us-563", "us-641", "us-712" ], "previous": "us-318", "next": "us-320" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 579, "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" } ] } }