{ "url": "https://phonelookup.dev/prefix/us-928", "npa": "928", "slug": "us-928", "iso": "US", "country": "United States", "regions": [ { "code": "AZ", "name": "Arizona", "exchanges": 647 } ], "exchanges": 647, "known": 633, "byLineType": { "fixed_line": 301, "mobile": 209, "unknown": 14, "voip": 123 }, "carriers": [ { "name": "Lumen", "exchanges": 124, "byLineType": { "fixed_line": 122, "voip": 2 }, "ranges": [ "202–204", "208", "213–214", "224", "226", "247", "251", "255", "257", "269", "277–278", "281–282", "284", "286", "288–290", "297", "305", "312", "314", "316–317", "323", "328–329", "336", "341–345", "348", "357", "373", "376", "387", "391", "402", "415", "423", "425", "427–428", "432", "436", "439", "442–443", "445", "457", "466", "468", "471–474", "476", "478", "482", "485", "487", "515", "522–523", "525–527", "539", "541", "552", "554", "556", "558", "567", "583", "592", "608", "627", "632", "634–639", "642", "645–646", "649", "668", "679", "683–684", "708", "714", "717", "722", "726", "759", "771–779", "782–783", "785", "792–793", "819", "852", "864", "913", "988" ] }, { "name": "Verizon", "exchanges": 91, "byLineType": { "mobile": 91 }, "ranges": [ "200", "210", "215–216", "231", "235", "238", "240–243", "245", "258", "265", "293–294", "296", "298", "300–301", "304", "308", "320", "322", "358", "366", "374", "379", "385–386", "390", "392", "413–414", "460", "483", "490", "503", "509–510", "513", "516", "531", "540", "547–549", "551", "559", "577", "580–582", "587", "606–607", "614–615", "640", "651", "655", "660", "671", "691", "699", "707", "713", "715–716", "727", "750", "812", "821", "830", "853", "856", "890", "892", "899", "910", "916", "919–920", "925", "940", "951", "961", "963", "965", "970", "978" ] }, { "name": "AT&T", "exchanges": 77, "byLineType": { "fixed_line": 33, "mobile": 44 }, "ranges": [ "201", "218", "221", "227", "234", "249", "270–271", "273–275", "280", "285", "287", "292", "295", "319", "325", "362–363", "375", "377", "380", "383", "405–406", "410", "412", "431", "452", "481", "495", "498–499", "502", "517", "530", "545", "557", "570–574", "595", "605", "609", "612", "631", "663", "701", "706", "719", "730", "799", "801–809", "814", "846", "897", "989–998" ] }, { "name": "Frontier", "exchanges": 73, "byLineType": { "fixed_line": 73 }, "ranges": [ "263", "283", "332–335", "337–339", "367–369", "453", "505", "524", "532", "535–537", "564–565", "652–654", "656–659", "662", "667", "669", "672–674", "677", "680–681", "686", "692", "697–698", "704", "718", "724–725", "728–729", "735–736", "739", "753–755", "757–758", "763–769", "781", "787–788", "810", "815", "851", "854–855", "857", "871", "923" ] }, { "name": "Onvoy", "exchanges": 66, "byLineType": { "voip": 66 }, "ranges": [ "212", "222–223", "236", "260", "267–268", "272", "291", "307", "318", "324", "352", "364–365", "370–371", "378", "381–382", "384", "389", "393–398", "437–438", "447", "449", "455", "484", "492–493", "496", "504", "506–508", "519", "538", "543", "563", "569", "585", "597–598", "610", "628", "693", "723", "798", "800", "832–833", "888–889", "898", "918", "928", "938", "962", "968", "981" ] }, { "name": "T-Mobile", "exchanges": 45, "byLineType": { "mobile": 45 }, "ranges": [ "220", "225", "230", "232", "237", "239", "246", "250", "254", "256", "259", "261", "279", "303", "310", "315", "388", "399", "417–418", "420", "435", "446", "450–451", "458–459", "463–464", "469", "486", "488", "514", "518", "533", "542", "550", "553", "593", "600", "710", "848", "862–863", "941" ] }, { "name": "Cellular One", "exchanges": 24, "byLineType": { "mobile": 24 }, "ranges": [ "205–207", "209", "229", "306", "309", "313", "321", "326", "349", "401", "409", "429", "434", "489", "497", "521", "528", "594", "613", "675", "751", "797" ] }, { "name": "Fractel", "exchanges": 18, "byLineType": { "voip": 18 }, "ranges": [ "356", "400", "465", "544", "644", "666", "732", "744", "822", "842", "844", "866", "877", "933", "944", "946", "966", "977" ] }, { "name": "Allstream", "exchanges": 17, "byLineType": { "fixed_line": 17 }, "ranges": [ "217", "233", "244", "340", "350–351", "433", "441", "588–589", "596", "599", "641", "752", "756", "813", "817" ] }, { "name": "Ton80 Communications", "exchanges": 17, "byLineType": { "voip": 17 }, "ranges": [ "534", "546", "622", "624–625", "664–665", "743", "746", "786", "836–837", "843", "872", "876", "878", "886" ] }, { "name": "Optimum", "exchanges": 13, "byLineType": { "fixed_line": 13 }, "ranges": [ "219", "264", "266", "299", "302", "404", "440", "444", "529", "566", "575", "733", "770" ] }, { "name": "TDS Telecom", "exchanges": 11, "byLineType": { "fixed_line": 11 }, "ranges": [ "353–355", "372", "448", "454", "467", "477", "479", "859", "927" ] }, { "name": "Bandwidth.com", "exchanges": 7, "byLineType": { "voip": 7 }, "ranges": [ "228", "331", "361", "421", "491", "882", "985" ] }, { "name": "Table Top Telephone Company", "exchanges": 5, "byLineType": { "fixed_line": 5 }, "ranges": [ "422", "633", "685", "688", "858" ] }, { "name": "Valley Telephone Cooperative", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "359", "687", "828", "865" ] }, { "name": "Hopi Telecommunications", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "734", "737–738" ] }, { "name": "North County Communications", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "253", "262", "789" ] }, { "name": "Spectrum", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "248", "276", "955" ] }, { "name": "COMMIO LLC", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "456", "867" ] }, { "name": "Emergency Networks", "exchanges": 2, "byLineType": { "mobile": 2 }, "ranges": [ "416", "880" ] }, { "name": "Fort Mojave Telecommunications", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "330", "346" ] }, { "name": "IP Horizon", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "426", "430" ] }, { "name": "Midvale Telephone Exchange", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "462", "999" ] }, { "name": "South Central Utah Telephone Association", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "643", "875" ] }, { "name": "TELNYX", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "403", "407" ] }, { "name": "Terra Nova Telecom", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "500", "900" ] }, { "name": "Access2Go", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "975" ] }, { "name": "Allo Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "512" ] }, { "name": "Brightlink Communications", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "461" ] }, { "name": "CSC Wireless LLC", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "419" ] }, { "name": "Comcast", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "252" ] }, { "name": "Commnet Wireless", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "360" ] }, { "name": "Dish Wireless", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "408" ] }, { "name": "Nuso", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "470" ] }, { "name": "Peerless Network", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "494" ] }, { "name": "Rio Virgin Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "347" ] }, { "name": "San Carlos Apache Telecommunications Utility", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "475" ] }, { "name": "Valley Connections", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "424" ] }, { "name": "Vonage", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "327" ] }, { "name": "West Telecom", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "922" ] }, { "name": "Wide Voice", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "929" ] }, { "name": "Zona Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "501" ] } ], "grid": "mmfffmmmfmmuvffmmfmfmmvvfmffvmmmmfmmvmmmmmmmfmmffmmfvfmfmfmmvmfffmfvvffmvmmmfffmmffffffmfffvmmmfmfmfmmfmmfmvmmmufmfmvfvmmmmfvfmvfffvfffffffffffffffffmffvfffvfmfmvfmvvmfffvvffmmfmvmmvvmvmmfmvmfmvvvvvvmvmfvfmmvmmmummmfmmmmmvffffvffmvmffmmfvvfffffffmvfvmmmffvvfmmmvfmmvfffmffffffffff-mfmvfmfmmmvvvvmvmffvfmmvfvvvmmufmmfmmmv-mffffffmfmmfmvfffvfmfmvvmvmmmmmfmfufmvm---vffff-vffffff-m--mmmf-v-mff--fmmmfvvfm----mmmfmvummmm------v-vv-fv--mffffffffmfffvff--f-mfffmffffm-fmvvvfff-mfffm-f-fff-ffffff--mfv---ffmum--f-mmf-mu-mfmmffm--fvfffmffm-vfffffff---vv-v---mmffffffff---fffffffffffffffff-fff-fvfff--ff---mvfvffffffffffumfmf-f-f-mv-----f-m-vv--vv----vvv-m-m--ffmffmfff--mmffvv---fv--fvvv-m-v---v-vvm-m----mvmv---------mu-f--m-vmm-ff-m-fvf---v----v-mm--v-v---um---f--uu-mvm-mv-v-m----vuvm--v---v--ffffffffffff", "patterns": { "all": "^\\+1928[2-9]\\d{6}$", "fixed_line": "^\\+1928(?:2(?:0[2-48]|1[3479]|2[467]|33|4[478]|5[1357]|6[2-469]|7[06-8]|8[1-689]|9[0579])|3(?:0[25]|1[247]|2[3589]|3[02-9]|4[0-8]|5[013-579]|6[27-9]|7[236]|87|91)|4(?:0[24]|15|2[2-578]|3[2369]|4[0-58]|5[347]|6[26-8]|7\\d|8[257]|9[89])|5(?:0[15]|1[25]|2[2-79]|3[25-79]|41|5[246]|6[4-7]|7[0-5]|8[389]|9[269])|6(?:08|27|3[2-9]|4[1-3569]|5[2-46-9]|6[27-9]|7[2-479]|8[013-8]|9[278])|7(?:0[48]|1[478]|2[24-689]|[36][3-9]|5[2-9]|7\\d|8[1-357-9]|9[239])|8(?:0[1-9]|1[03579]|28|5[12457-9]|6[45]|7[15])|9(?:13|2[2379]|55|8[89]|9\\d))\\d{4}$", "mobile": "^\\+1928(?:2(?:0[015-79]|1[0568]|2[0159]|3[0-2457-9]|4[0-3569]|5[04689]|6[15]|7[13-59]|8[07]|9[2-468])|3(?:0[0134689]|1[0359]|2[0-26]|49|58|6[036]|7[4579]|8[03568]|9[029])|4(?:0[15689]|1[02-46-9]|2[09]|3[145]|46|5[0-289]|6[0349]|8[13689]|9[057])|5(?:0[239]|1[0346-8]|2[18]|3[013]|4[0257-9]|5[01379]|77|8[0-27]|9[3-5])|6(?:0[05-79]|1[2-5]|31|40|[57][15]|6[03]|9[19])|7(?:0[167]|1[03569]|[29]7|30|5[01])|8(?:1[24]|21|[38]0|4[68]|5[36]|6[23]|9[0279])|9(?:1[069]|2[05]|4[01]|51|6[135]|7[08]))\\d{4}$", "voip": "^\\+1928(?:2(?:[157]2|2[238]|36|6[078]|91)|3(?:07|1[68]|2[47]|31|5[26]|6[145]|7[018]|8[1249]|9[3-8])|4(?:0[037]|2[16]|3[078]|4[79]|5[56]|6[15]|84|9[1-46])|5(?:0[046-8]|19|3[48]|4[346]|58|6[39]|85|9[78])|6(?:10|2[2458]|44|6[4-6]|93)|7(?:23|32|4[346]|86|98)|8(?:00|22|3[2367]|4[2-4]|6[67]|7[26-8]|8[2689]|98)|9(?:00|[12]8|3[38]|4[46]|6[268]|7[57]|8[15]))\\d{4}$" }, "sandbox": { "input": "+19285550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+19285550123", "international": "+1 928-555-0123", "national": "(928) 555-0123", "rfc3966": "tel:+1-928-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "928", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 928?", "answer": "Area code 928 is in Arizona, in the United States: all 647 of its exchanges on record are there. From abroad it is dialled +1 928, then the seven-digit number." }, { "question": "Is a 928 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 647 exchanges on record in 928, 209 (32%) were allocated as mobile, 301 (47%) as fixed line, 123 (19%) 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 928?", "answer": "42 carriers hold exchanges in 928 on record; the most: Lumen (124), Verizon (91) and AT&T (77). 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 928 phone number?", "answer": "In E.164 a 928 number matches ^\\+1928[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 (928) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP." } ], "neighbours": { "sameRegion": [ "us-480", "us-520", "us-602", "us-623" ], "previous": "us-925", "next": "us-929" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 647, "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" } ] } }