{ "url": "https://phonelookup.dev/prefix/us-559", "npa": "559", "slug": "us-559", "iso": "US", "country": "United States", "regions": [ { "code": "CA", "name": "California", "exchanges": 800 } ], "exchanges": 800, "known": 785, "byLineType": { "fixed_line": 352, "mobile": 276, "unknown": 15, "voip": 157 }, "carriers": [ { "name": "AT&T", "exchanges": 322, "byLineType": { "fixed_line": 192, "mobile": 123, "voip": 7 }, "ranges": [ "200", "215", "221–233", "237", "241", "243–244", "247–248", "250–253", "255", "259–266", "268–269", "271", "274–278", "280–281", "283–285", "287–289", "291–292", "294", "297–299", "301", "303–304", "310", "312–313", "317", "322–325", "327", "346–349", "353", "355", "359–362", "372", "375", "377", "383–384", "386–388", "392–395", "408", "410", "412–414", "416", "429–459", "477", "480–481", "485–489", "493–499", "502", "507", "509", "513–516", "518", "528", "535", "539", "542", "544", "547", "551", "556–557", "561", "564–565", "569", "572", "579–580", "582–587", "589–591", "595–596", "598", "600", "602–604", "608", "610", "613", "618–627", "630", "635–636", "645–646", "649", "651", "655", "659", "661–662", "664–665", "669", "672–676", "679", "684–688", "691", "696", "704", "713", "719–721", "723", "730", "732–741", "747", "749", "752", "755–757", "766", "770", "779", "781–784", "786", "788–789", "791", "793", "795–796", "798–799", "801–802", "807", "814", "816", "820", "824", "826", "830", "835", "839", "848", "852", "856", "858–860", "864", "866–867", "871", "883–884", "886–889", "891", "896–898", "904–906", "912", "915–918", "922–926", "930", "932", "934–936", "945", "947", "956–957", "965", "969", "975", "985", "989", "991", "997–998" ] }, { "name": "T-Mobile", "exchanges": 79, "byLineType": { "mobile": 79 }, "ranges": [ "202–203", "207", "213–214", "217", "270", "273", "286", "290", "293", "300", "305–309", "318", "330", "333", "344", "350–352", "358", "363–364", "371", "373", "389", "403", "469", "479", "491", "541", "545", "548", "563", "567", "571", "601", "612", "614", "647", "652–653", "668", "680–681", "694", "701", "709", "712", "716", "722", "724", "727–728", "750", "754", "759", "768", "776", "790", "800", "804–805", "813", "817", "836", "872", "882", "885", "913–914", "940", "942", "968", "994" ] }, { "name": "Lumen", "exchanges": 72, "byLineType": { "fixed_line": 70, "voip": 2 }, "ranges": [ "242", "256–257", "295–296", "302", "316", "326", "340", "342", "370", "382", "385", "396–399", "472", "474", "482–484", "522", "526–527", "529", "531", "540", "543", "549", "552", "566", "588", "631–634", "639–640", "644", "648", "654", "667", "671", "677–678", "682", "697", "702", "708", "717–718", "725", "742", "751", "753", "761", "763", "765", "769", "819", "821", "823", "827", "838", "847", "853", "862", "869", "892", "895", "927" ] }, { "name": "Verizon", "exchanges": 59, "byLineType": { "fixed_line": 7, "mobile": 52 }, "ranges": [ "220", "240", "246", "267", "319", "321", "331", "341", "356–357", "365", "367–368", "381", "401", "417", "490", "505", "536", "574", "578", "593", "616", "650", "666", "690", "706–707", "731", "760", "767", "773", "794", "831–832", "870", "880", "894", "901", "903", "907–909", "920", "938", "941", "943", "948", "953", "960", "967", "970", "972–974", "977–978", "981", "999" ] }, { "name": "Onvoy", "exchanges": 56, "byLineType": { "voip": 56 }, "ranges": [ "206", "234–236", "249", "272", "314–315", "354", "379–380", "400", "404–406", "420–421", "427", "467", "470–471", "478", "500", "519–521", "523", "532–533", "550", "553–554", "559–560", "570", "573", "657", "660", "663", "744–746", "777", "792", "808", "845", "851", "874", "879", "899", "900", "910", "954", "961", "963", "987" ] }, { "name": "Bandwidth.com", "exchanges": 36, "byLineType": { "voip": 36 }, "ranges": [ "201", "239", "245", "258", "282", "328", "345", "376", "378", "422", "424–426", "460", "462", "464", "468", "492", "512", "530", "575–576", "607", "617", "628", "656", "714", "748", "785", "825", "921", "931", "982–984", "986" ] }, { "name": "Frontier", "exchanges": 22, "byLineType": { "fixed_line": 22 }, "ranges": [ "332", "335–338", "562", "568", "592", "594", "597", "637–638", "643", "693", "698", "787", "829", "834", "875–876", "949", "992" ] }, { "name": "Tpx Communications", "exchanges": 17, "byLineType": { "fixed_line": 17 }, "ranges": [ "212", "218", "320", "329", "334", "339", "390–391", "517", "537", "577", "605", "764", "797", "803", "806", "828" ] }, { "name": "Comcast", "exchanges": 13, "byLineType": { "fixed_line": 13 }, "ranges": [ "210", "254", "343", "366", "475", "743", "762", "772", "775", "780", "810", "840", "881" ] }, { "name": "IP Horizon", "exchanges": 13, "byLineType": { "voip": 13 }, "ranges": [ "402", "407", "415", "418–419", "423", "428", "461", "463", "465–466", "473", "581" ] }, { "name": "Fractel", "exchanges": 9, "byLineType": { "voip": 9 }, "ranges": [ "599", "699", "758", "833", "844", "944", "946", "955", "966" ] }, { "name": "Emergency Networks", "exchanges": 7, "byLineType": { "mobile": 7 }, "ranges": [ "508", "629", "695", "703", "710", "902", "937" ] }, { "name": "Peerless Network", "exchanges": 7, "byLineType": { "voip": 7 }, "ranges": [ "205", "216", "374", "525", "837", "854", "952" ] }, { "name": "The Ponderosa Telephone Company", "exchanges": 7, "byLineType": { "fixed_line": 7 }, "ranges": [ "822", "841", "855", "865", "868", "877", "893" ] }, { "name": "American Messaging", "exchanges": 6, "byLineType": { "mobile": 6 }, "ranges": [ "279", "501", "503–504", "506", "771" ] }, { "name": "Sierra Telephone Company", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "641–642", "658", "683", "689", "692" ] }, { "name": "Ton80 Communications", "exchanges": 6, "byLineType": { "voip": 6 }, "ranges": [ "715", "929", "933", "939", "993", "996" ] }, { "name": "COMMIO LLC", "exchanges": 5, "byLineType": { "voip": 5 }, "ranges": [ "219", "510", "778", "878", "995" ] }, { "name": "Dish Wireless", "exchanges": 5, "byLineType": { "mobile": 5 }, "ranges": [ "774", "809", "812", "849", "857" ] }, { "name": "Wide Voice", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "369", "546", "670", "726" ] }, { "name": "HD Carrier", "exchanges": 3, "byLineType": { "voip": 3 }, "ranges": [ "524", "964", "979" ] }, { "name": "Kerman Telephone Company", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "842–843", "846" ] }, { "name": "TELNYX", "exchanges": 3, "byLineType": { "voip": 3 }, "ranges": [ "409", "609", "705" ] }, { "name": "Brightlink Communications", "exchanges": 2, "byLineType": { "mobile": 1, "voip": 1 }, "ranges": [ "558", "928" ] }, { "name": "Ducor Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "534", "850" ] }, { "name": "Exiant", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "729", "861" ] }, { "name": "Network Services", "exchanges": 2, "byLineType": { "mobile": 2 }, "ranges": [ "204", "208" ] }, { "name": "Nuso", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "815", "818" ] }, { "name": "Skyetel", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "238", "990" ] }, { "name": "Twilio International", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "606", "863" ] }, { "name": "West Telecom", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "873", "971" ] }, { "name": "8x8", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "980" ] }, { "name": "CSC Wireless LLC", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "209" ] }, { "name": "Leap Telecom", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "919" ] }, { "name": "Spectrum", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "615" ] }, { "name": "Terra Nova Telecom", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "538" ] }, { "name": "Utility Telephone", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "476" ] }, { "name": "Vested Networks", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "951" ] }, { "name": "Vonage", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "890" ] }, { "name": "Wavenation", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "962" ] } ], "grid": "mvmmmvvmmmfufmmmvmfvfffmfffffffvmfvvvfvvmffffvmffvmfffffffvmmffffffmfmmfvmfffffmmmvmmmmmmmmffmffffffmmfmmmmmmmmufmvvfmmfffffffffvfmmfmfffffffmffmvfffmmmmfvmmmmmmmmmmmffmffmvmvvvvvvvmfvvffffmffmmmmffffvmvmvvvvmvfummfvmmvvvvvvvvvvvfffffffffffffffffffffffffffffffvvvvvvvvvmvvfvffffvmmmfffffffffmvfffffffvmmmmmmmmmvuvmmmmfmvvvfvvvffffvfvvffmfvffmfffmfmmfvmvvvummmvvffmfffmfmvmmvmvvfmmmvffffmfffmffmffffmvfmmfmfvvfvmummmfmvmmmfffffffvmmffffffffffffffffmfmffmmffvvffvffvffmfmmffmfffmffmmmffffffffmmffmmmffvumfmmvmmfmmumfvvmffmmvmmmffmmvfmffffmfffffffvvvfvfmffvmmmfvmmffffffmmfmmfmmfmvvmfffffvmfffmfvfmmmffmmfmfmmffvmfummmfmmffmfffmvmfffmmmvfmmvfmffffvvffmmfvffvfmmmmmvfvffffffmmmfvfffvvmfmmfmmmfmvfffmffffvvmmmmmmmmmvufmmmmmmfmvffffmfvvmvmvffmmmvmmmfvfvfmfufvmvvmmuumvfvvmvmmmmfmmmmummvvmvvvmvvumvmfvmvvffm", "patterns": { "all": "^\\+1559[2-9]\\d{6}$", "fixed_line": "^\\+1559(?:2(?:1[028]|2[0-24-9]|3[037]|4[1-478]|5[1-7]|6[1-68]|7[14-8]|9[124-9])|3(?:02|1[269]|2[0-79]|3[24-9]|4[0236-8]|53|6[679]|70|8[25-8]|9[016-9])|4(?:1[04]|29|[3-5]\\d|7[24-7]|8[2-9]|9[03-9])|5(?:[17]7|2[26-9]|3[14579]|4[02-469]|6[124-68]|8[2-57-9]|9[124-7])|6(?:0[0358]|15|2[1-7]|3[1-9]|4[0-68]|5[014589]|6[12457]|7[013-578]|8[2-9]|9[2378])|7(?:0[28]|1[378]|2[56]|3[02-57-9]|4[0-379]|5[127]|6[1-69]|7[25]|8[0-47-9]|9[1378])|8(?:0[1367]|1[0589]|2[1-37-9]|3[48]|4[0-367]|5[0235]|6[24-9]|7[35-7]|8[148]|9[1-35-8])|9(?:1[29]|2[2-57]|3[45]|4[3579]|[57]1|62|9[278]))\\d{4}$", "mobile": "^\\+1559(?:2(?:0[02-47-9]|1[3-57]|23|32|4[06]|5[09]|6[079]|7[039]|8[013-9]|9[03])|3(?:0[013-9]|1[0378]|3[013]|4[149]|5[0-25-9]|6[0-58]|7[13]|8[19]|9[2-5])|4(?:0[138]|1[2367]|[67]9|8[01]|91)|5(?:0[1-9]|1[3-68]|36|4[1578]|5[16-8]|6[379]|7[12489]|8[06]|9[038])|6(?:0[124]|1[02-4689]|2[09]|30|4[79]|5[23]|6[689]|7[269]|8[01]|9[014-6])|7(?:0[134679]|1[0269]|2[02-478]|3[16]|[59][04-69]|6[078]|7[013469]|86)|8(?:0[02459]|1[2-467]|2[046]|3[0-2569]|4[89]|5[6-9]|60|7[0-2]|8[0235-79]|94)|9(?:0[1-9]|1[3-8]|2[06]|3[026-8]|4[0-28]|5[367]|6[057-9]|7[02-578]|8[159]|9[149]))\\d{4}$", "voip": "^\\+1559(?:2(?:0[156]|1[69]|3[14-689]|4[59]|58|[78]2)|3(?:1[45]|28|45|54|7[24-9]|8[034])|4(?:0[024-79]|1[589]|[26][0-8]|7[0138]|92)|5(?:[06]0|1[029]|2[013-5]|3[0238]|5[02-49]|7[0356]|81|99)|6(?:0[679]|17|28|5[67]|6[03]|99)|7(?:[08]5|1[45]|2[19]|4[4-68]|5[38]|7[78]|92)|8(?:08|25|3[37]|4[45]|5[14]|6[13]|7[489]|9[09])|9(?:[01]0|2[189]|3[139]|4[46]|5[245]|6[1346]|79|8[02-467]|9[0356]))\\d{4}$" }, "sandbox": { "input": "+15595550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+15595550123", "international": "+1 559-555-0123", "national": "(559) 555-0123", "rfc3966": "tel:+1-559-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "559", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 559?", "answer": "Area code 559 is in California, in the United States: all 800 of its exchanges on record are there. From abroad it is dialled +1 559, then the seven-digit number." }, { "question": "Is a 559 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 800 exchanges on record in 559, 276 (35%) were allocated as mobile, 352 (44%) as fixed line, 157 (20%) as VoIP and 15 (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 559?", "answer": "40 carriers hold exchanges in 559 on record; the most: AT&T (322), T-Mobile (79) and Lumen (72). 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 559 phone number?", "answer": "In E.164 a 559 number matches ^\\+1559[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 (559) 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-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-820", "us-831", "us-840", "us-858", "us-909", "us-916", "us-925", "us-949", "us-951" ], "previous": "us-557", "next": "us-561" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 800, "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" } ] } }