{ "url": "https://phonelookup.dev/prefix/us-435", "npa": "435", "slug": "us-435", "iso": "US", "country": "United States", "regions": [ { "code": "UT", "name": "Utah", "exchanges": 525 } ], "exchanges": 525, "known": 501, "byLineType": { "fixed_line": 236, "mobile": 186, "unknown": 24, "voip": 79 }, "carriers": [ { "name": "Lumen", "exchanges": 82, "byLineType": { "fixed_line": 81, "voip": 1 }, "ranges": [ "213–216", "245", "248", "251", "258", "275", "277", "363", "438", "477", "494", "522", "527", "529", "535", "553–554", "562–563", "565", "571–572", "574", "586", "612", "615", "623", "625", "627–628", "633–635", "645", "647", "649", "652", "654–658", "673–675", "677", "688", "695", "710", "713", "716", "723", "728", "734", "744", "750", "752–755", "767", "772", "786–787", "792", "833", "843", "856", "865", "867–868", "879", "882", "884", "893", "896", "938", "940", "986" ] }, { "name": "Verizon", "exchanges": 70, "byLineType": { "fixed_line": 7, "mobile": 63 }, "ranges": [ "201", "210", "221", "230–231", "236", "252–253", "260", "262", "278", "290", "293", "295", "297", "299", "300–303", "321", "338", "346", "350", "352", "358", "400", "406", "418–419", "421", "459", "465–466", "485", "487", "578–579", "590", "592", "608–610", "618", "630", "632", "640", "650", "659–660", "668–669", "671", "690", "704", "720", "740", "749", "760", "770", "799", "813", "819", "840–841", "851", "890", "899", "990", "999" ] }, { "name": "AT&T", "exchanges": 64, "byLineType": { "fixed_line": 9, "mobile": 55 }, "ranges": [ "203", "205", "209", "212", "217", "220", "233", "243", "288", "291", "304–306", "308", "310", "312", "318", "320", "322–323", "329–332", "340", "342–343", "354", "357", "375", "393", "395", "401", "469", "491", "503", "514", "558–559", "603–604", "619", "631", "670", "680–681", "689", "691", "709", "724", "729–730", "733", "757", "771", "790", "817", "820", "830", "849", "881", "901", "921", "979" ] }, { "name": "T-Mobile", "exchanges": 44, "byLineType": { "mobile": 44 }, "ranges": [ "219", "224–225", "229", "232", "237", "239", "241–242", "255", "265", "267", "282", "294", "313–314", "319", "327–328", "339", "360", "365", "369", "374", "414", "496", "512–513", "525", "531", "549", "580", "602", "621", "701", "703", "705", "714", "731", "764", "850", "862", "962", "994" ] }, { "name": "Onvoy", "exchanges": 43, "byLineType": { "voip": 43 }, "ranges": [ "218", "238", "244", "246", "254", "256", "264", "266", "269", "274", "280", "284", "292", "309", "324–325", "334", "337", "344–345", "351", "359", "361", "368", "383", "409", "412", "417", "422", "432", "441", "447", "495", "500", "518", "523", "534", "626", "797", "800", "915", "919", "923" ] }, { "name": "Frontier", "exchanges": 32, "byLineType": { "fixed_line": 32 }, "ranges": [ "207", "257", "259", "279", "285", "316", "452", "458", "471", "587", "651", "672", "678", "683–684", "686", "692", "719", "727", "739", "743", "758–759", "795", "842", "846", "854", "857", "863–864", "866", "872" ] }, { "name": "South Central Utah Telephone Association", "exchanges": 24, "byLineType": { "fixed_line": 24 }, "ranges": [ "326", "335", "386–387", "425", "439", "463", "467", "577", "616", "624", "638", "644", "648", "676", "679", "682", "735", "826", "834", "836", "874", "877–878" ] }, { "name": "Beehive Telephone", "exchanges": 13, "byLineType": { "fixed_line": 13 }, "ranges": [ "234", "456", "661–663", "693", "712", "747", "788", "837", "839", "855", "871" ] }, { "name": "UBTA Communications", "exchanges": 13, "byLineType": { "fixed_line": 13 }, "ranges": [ "247", "353", "454", "545", "548", "622", "646", "722", "725", "738", "781", "789", "848" ] }, { "name": "UBET Wireless", "exchanges": 11, "byLineType": { "mobile": 11 }, "ranges": [ "367", "370–371", "376", "407–408", "410", "822–824", "828" ] }, { "name": "Bandwidth.com", "exchanges": 10, "byLineType": { "voip": 10 }, "ranges": [ "222", "250", "261", "272", "341", "429", "515", "557", "708", "922" ] }, { "name": "Fractel", "exchanges": 9, "byLineType": { "voip": 9 }, "ranges": [ "348", "356", "599", "600", "666–667", "699", "732", "900" ] }, { "name": "Emery Telcom", "exchanges": 8, "byLineType": { "fixed_line": 8 }, "ranges": [ "286", "355", "381", "384", "564", "653", "687", "748" ] }, { "name": "Union Telephone", "exchanges": 7, "byLineType": { "mobile": 7 }, "ranges": [ "202", "766", "768", "778–779", "880", "948" ] }, { "name": "All West", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "333", "336", "782–783", "785", "793" ] }, { "name": "Allstream", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "200", "538", "773–776" ] }, { "name": "Carbon - Emery Telephone", "exchanges": 5, "byLineType": { "fixed_line": 5 }, "ranges": [ "472", "613", "636–637", "888" ] }, { "name": "Central Utah Telephone", "exchanges": 5, "byLineType": { "fixed_line": 5 }, "ranges": [ "427", "445", "448", "462", "870" ] }, { "name": "Ton80 Communications", "exchanges": 5, "byLineType": { "voip": 5 }, "ranges": [ "547", "567", "569", "737", "746" ] }, { "name": "Skyline Telecom", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "433", "436", "665", "831" ] }, { "name": "Union Telephone Company", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "642", "784", "885", "889" ] }, { "name": "Comcast", "exchanges": 3, "byLineType": { "voip": 3 }, "ranges": [ "249", "315", "932" ] }, { "name": "Paetec Itel", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "226–228" ] }, { "name": "Peerless Network", "exchanges": 3, "byLineType": { "voip": 3 }, "ranges": [ "271", "289", "296" ] }, { "name": "E. Fiber San Juan", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "270", "298" ] }, { "name": "FirstDigital", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "566", "575" ] }, { "name": "Manti Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "283", "835" ] }, { "name": "South Central Communications", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "223", "263" ] }, { "name": "TDS Baja Broadband", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "366", "377" ] }, { "name": "USA Mobility", "exchanges": 2, "byLineType": { "mobile": 2 }, "ranges": [ "204", "235" ] }, { "name": "ATC Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "827" ] }, { "name": "Bear Lake Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "946" ] }, { "name": "Brightlink Communications", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "281" ] }, { "name": "COMMIO LLC", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "240" ] }, { "name": "Cellular One", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "444" ] }, { "name": "CentraCom Interactive", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "287" ] }, { "name": "Dish Wireless", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "317" ] }, { "name": "E. Fiber Moab", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "362" ] }, { "name": "Emergency Networks", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "276" ] }, { "name": "Gunnison Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "528" ] }, { "name": "Hanksville Telcom", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "542" ] }, { "name": "Manti Telecommunications", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "364" ] }, { "name": "North County Communications Corporation", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "473" ] }, { "name": "TELNYX", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "777" ] }, { "name": "Veracity Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "268" ] } ], "grid": "fmmmmm-fummumffffmvmmmvfmmfffmmmmmfmmmvmvmmfvfvffvvffmvmvfffmvmfvmvmfvfvv-vfmfmfvvmfvfffmvmmvmmmvmfmmmmmfmmumvmummmvfmmmmmmmvvfmmmmmmfvffvfmmvmmvvmuvumvmfmfvmmvmvffmmvmvmmm--mmmv---f-vfuff-----m-m----mm----mmmvmuv-m--vmm-mv--f-f-v--vf-uf-ff-v--mf-vf---f-f-f-fm--ff-fmf-m-fff---f-------m-f---m--fvm---v--m-------ummfv--v---vv-m-fff-m--vf--f---f--f-vfm---ffu-vmm--fffffv-v-ff-ff-fffm-----ff--m-m------vv-mff---fmmuff-ff-mm-mffffvff-mmmffffff-m-f-ffffffmffffffffmmfff-fvvmmfmffffffffmmfff-fffmmmff-f---vum-mmm--vffuffm-f--fm-ffmf-ffmmmvmff-vffm--ff-vffmf-ffff-mffm---m-mfm-mffffffvmm-fffffffffm-ff-f-v-mvu---------u-m---m-mm-mmm-ffm-mf-fffff-fmmff--f-fmmm--ffff----mffffff-fff-f--fffmmf-ff--ffm--f--f--mvm---------u---v---v-fvv----u---v-----f-f-----f-m-u-------uu--m-------u-----u--m------f-u-m---m----m", "patterns": { "all": "^\\+1435[2-9]\\d{6}$", "fixed_line": "^\\+1435(?:2(?:0[07]|1[3-6]|2[36-8]|34|4[3578]|5[127-9]|6[38]|7[0579]|8[35-7]|98)|3(?:04|[12]6|3[3568]|5[35]|6[23]|8[1467])|4(?:2[57]|3[3689]|4[58]|5[2468]|6[2357]|7[1-37]|87|94)|5(?:14|2[7-9]|3[58]|4[258]|5[34]|6[2-6]|7[12457-9]|8[67])|6(?:0[348]|1[2356]|2[2-578]|3[3-8]|4[24-9]|5[1-8]|6[1-35]|7[02-9]|8[2-46-8]|9[235])|7(?:09|1[02369]|2[23578]|3[4589]|4[3478]|5[02-589]|67|7[1-6]|8[1-9]|9[235])|8(?:2[67]|3[13-79]|4[2368]|5[4-7]|6[3-8]|7[0-247-9]|8[24589]|9[36])|9(?:21|38|4[06]|86))\\d{4}$", "mobile": "^\\+1435(?:2(?:0[1-59]|1[0279]|2[01459]|3[0-35-79]|4[12]|5[35]|6[0257]|7[68]|8[28]|9[013-579])|3(?:0[0-3568]|1[02-47-9]|2[0-37-9]|3[0-29]|4[0236]|5[02478]|6[04579]|7[014-6]|9[35])|4(?:0[016-8]|1[0489]|21|44|59|6[69]|85|9[16])|5(?:03|1[23]|25|31|49|5[89]|80|9[02])|6(?:0[29]|[16][089]|[27]1|3[0-2]|40|5[09]|8[019]|9[01])|7(?:0[13-5]|14|2[049]|3[013]|[49][09]|57|6[0468]|7[089])|8(?:1[379]|2[02-48]|30|4[019]|[58][01]|62|9[09])|9(?:01|48|62|79|9[049]))\\d{4}$", "voip": "^\\+1435(?:2(?:[13]8|22|4[0469]|5[046]|6[1469]|7[124]|8[0149]|9[26])|3(?:09|15|2[45]|3[47]|4[1458]|5[169]|6[168]|77|83)|4(?:09|1[27]|2[29]|32|4[17]|95)|5(?:00|1[58]|2[23]|34|[45]7|6[79]|99)|6(?:00|26|6[67]|99)|7(?:08|3[27]|46|[79]7)|800|9(?:00|1[59]|2[23]|32))\\d{4}$" }, "sandbox": { "input": "+14355550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+14355550123", "international": "+1 435-555-0123", "national": "(435) 555-0123", "rfc3966": "tel:+1-435-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "435", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 435?", "answer": "Area code 435 is in Utah, in the United States: all 525 of its exchanges on record are there. From abroad it is dialled +1 435, then the seven-digit number." }, { "question": "Is a 435 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 525 exchanges on record in 435, 186 (35%) were allocated as mobile, 236 (45%) as fixed line, 79 (15%) as VoIP and 24 (5%) 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 435?", "answer": "45 carriers hold exchanges in 435 on record; the most: Lumen (82), Verizon (70) and AT&T (64). 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 435 phone number?", "answer": "In E.164 a 435 number matches ^\\+1435[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 (435) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP." } ], "neighbours": { "sameRegion": [ "us-385", "us-801" ], "previous": "us-434", "next": "ca-437" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 525, "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" } ] } }