{ "url": "https://phonelookup.dev/prefix/us-734", "npa": "734", "slug": "us-734", "iso": "US", "country": "United States", "regions": [ { "code": "MI", "name": "Michigan", "exchanges": 730 } ], "exchanges": 730, "known": 701, "byLineType": { "fixed_line": 391, "mobile": 206, "unknown": 29, "voip": 104 }, "carriers": [ { "name": "AT&T", "exchanges": 241, "byLineType": { "fixed_line": 198, "mobile": 42, "voip": 1 }, "ranges": [ "206–207", "213–214", "218", "222–223", "228–229", "232–233", "240–244", "246–247", "250", "254", "256–258", "261", "263", "266", "274", "276–277", "281–285", "287", "289", "302", "315", "317", "324", "326–327", "332", "334–335", "350–351", "353–355", "358", "362", "365", "367", "374–375", "379", "384", "386", "391–392", "394", "396–399", "406", "414", "416", "420–422", "424–428", "432–434", "439", "449", "451", "453–455", "457–459", "461–462", "464–467", "475", "477", "479–487", "495", "502", "506", "508", "510", "513", "516", "522–525", "528", "539", "542", "544–548", "551", "565", "572", "582–583", "591", "593", "595", "601", "604", "612–613", "615", "617", "619–620", "622–623", "630", "632", "635", "641", "647", "654–655", "662–663", "665–666", "668–669", "671", "675–677", "691–693", "695", "697", "699", "712", "716", "721–722", "727–731", "733", "737–738", "741", "747", "753", "757", "761–765", "767", "769", "771", "775–776", "778–783", "788–789", "792", "802–803", "805", "827", "834", "840", "844", "849", "853", "855", "857–858", "878–879", "887", "913", "921", "930", "936", "941–942", "946–947", "953–955", "957", "969–971", "973", "975", "981", "983–984", "994–998" ] }, { "name": "Verizon", "exchanges": 124, "byLineType": { "fixed_line": 53, "mobile": 71 }, "ranges": [ "202", "204–205", "209", "249", "255", "264–265", "273", "280", "286", "288", "293–294", "303–304", "308–309", "312", "329", "339", "345", "347", "352", "357", "366", "378", "381", "395", "413", "417", "419", "423", "431", "435", "445", "447–448", "452", "456", "460", "468–469", "474", "476", "478", "491", "496", "505", "512", "515", "518", "521", "530–531", "535–536", "543", "552", "554", "558", "575", "585", "592", "594", "597", "608", "610", "621", "625–629", "634", "645–646", "649", "660–661", "664", "672", "679", "685", "694", "706", "718", "723", "735", "739–740", "742–744", "748–749", "751", "755–756", "758", "770", "784", "787", "790", "807", "812", "823", "829", "839", "842", "866", "869", "875–876", "890", "893", "904", "917", "922", "928", "939", "979", "985", "991" ] }, { "name": "T-Mobile", "exchanges": 69, "byLineType": { "mobile": 69 }, "ranges": [ "216", "231", "260", "262", "271", "278", "291–292", "301", "306", "320", "323", "330", "341", "346", "360", "363", "368", "371", "373", "377", "383", "410", "444", "450", "497", "507", "550", "560", "564", "576", "581", "596", "609", "624", "636–637", "644", "652", "657–658", "673–674", "678", "680", "709", "717", "754", "772–773", "777", "818–819", "833", "837", "845–846", "883", "885", "891", "896", "899", "905", "915", "925", "934", "945", "968", "972" ] }, { "name": "Lumen", "exchanges": 45, "byLineType": { "fixed_line": 43, "voip": 2 }, "ranges": [ "217", "221", "238–239", "259", "268", "272", "299", "322", "328", "337", "343–344", "348", "364", "388", "393", "418", "437", "443", "446", "471", "493–494", "526", "532", "556–557", "586", "606", "642", "681", "702", "719–720", "726", "732", "736", "752", "785–786", "843", "862", "864", "956" ] }, { "name": "Onvoy", "exchanges": 42, "byLineType": { "voip": 42 }, "ranges": [ "201", "212", "219", "224", "251", "307", "336", "361", "400", "409", "463", "472", "488", "514", "537", "540", "563", "568", "570", "577", "579", "590", "598", "600", "603", "607", "648", "688", "704", "707", "715", "724", "774", "800", "821–822", "838", "863", "865", "868", "889", "892" ] }, { "name": "Paetec Itel", "exchanges": 42, "byLineType": { "fixed_line": 42 }, "ranges": [ "215", "220", "230", "234", "236–237", "252", "333", "349", "382", "385", "389–390", "402–405", "407–408", "415", "440–442", "470", "489", "559", "561", "567", "639", "656", "659", "689", "713–714", "759", "793–796", "799", "826", "828" ] }, { "name": "Telnet Worldwide", "exchanges": 31, "byLineType": { "fixed_line": 31 }, "ranges": [ "298", "310", "314", "319", "321", "342", "370", "372", "376", "387", "401", "438", "501", "503", "520", "527", "533–534", "538", "549", "553", "571", "573–574", "605", "633", "638", "687", "873", "902", "943" ] }, { "name": "Comcast", "exchanges": 20, "byLineType": { "voip": 20 }, "ranges": [ "253", "270", "316", "318", "325", "331", "338", "340", "359", "369", "562", "580", "667", "725", "882", "895", "929", "961", "977", "992" ] }, { "name": "American Messaging", "exchanges": 14, "byLineType": { "mobile": 14 }, "ranges": [ "208", "267", "296–297", "305", "504", "566", "651", "670", "797–798", "817", "852", "860" ] }, { "name": "Frontier", "exchanges": 13, "byLineType": { "fixed_line": 13 }, "ranges": [ "269", "295", "429", "498", "529", "587", "847–848", "850", "854", "856", "888", "944" ] }, { "name": "Ton80 Communications", "exchanges": 12, "byLineType": { "voip": 12 }, "ranges": [ "643", "653", "683–684", "768", "832", "874", "932", "937", "967", "982", "987" ] }, { "name": "Bandwidth.com", "exchanges": 10, "byLineType": { "voip": 10 }, "ranges": [ "203", "210", "430", "492", "519", "589", "710", "926–927", "931" ] }, { "name": "Fractel", "exchanges": 7, "byLineType": { "voip": 7 }, "ranges": [ "356", "499", "599", "766", "877", "933", "966" ] }, { "name": "Peerless Network", "exchanges": 6, "byLineType": { "voip": 6 }, "ranges": [ "235", "275", "436", "808", "820", "999" ] }, { "name": "USA Mobility", "exchanges": 6, "byLineType": { "mobile": 6 }, "ranges": [ "226–227", "380", "473", "509", "907" ] }, { "name": "123.Net Inc", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "245", "588", "897" ] }, { "name": "Emergency Networks", "exchanges": 3, "byLineType": { "mobile": 3 }, "ranges": [ "290", "584", "682" ] }, { "name": "Deerfield Farmers' Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "279", "746" ] }, { "name": "Spectrum", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "708", "872" ] }, { "name": "Wow! Internet", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "225", "578" ] }, { "name": "ACD Telecom", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "686" ] }, { "name": "Airespring", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "884" ] }, { "name": "Brightlink Communications", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "541" ] }, { "name": "Dish Wireless", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "602" ] }, { "name": "Grid 4 Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "881" ] }, { "name": "Skyetel", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "880" ] }, { "name": "Vonage", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "412" ] } ], "grid": "uvmvmfffmmvuvfffmfmvfvfmvfmmmffmfmfvffffffffffffummvfvfmffffmfmmfffmffvmfmmvmmmfmfffffffffmmmfmfmmffumfmfmmvmmfumufvvfvfmffmfvffffmvffffvfvmvmffffmmfffmfmfmvfmvmvfmffmfmvfmfmfffmffmmfmfffffffffffmffffvfffffmffvmuvffffmffffffffffffvmfffmvfffffffmfffffmfffffffffmffvfmffffffvmmfmfmfffffffffvfumvfffmmfvufmfmmfmfmfuffvmmufvffffffffffffffffmvffvvfffmmfmfmfmfmuffmfmfvvmfmfv-vffffmmvfvvmfmmffffvvfffmfmmvvvfmvmffvmmmumm-fum-fmfffmmmffff-ffmmmmff-ffvmmmfvm-mmvfffmmfmfffmffvffmffmmfffmmmfmvvfffvf-mfmmf-f-fu-v-v-mvfmvufffvmmmffffmvvffffmmfmumfffmmffff-ffmfumffmmmfff-ffffmvmvfmmmmvmmmmffffffffmmfm-fffffmmfv-mf-f-mv-uum----mmmvvvf--fffm--vmm--mvff-mffmmffff-mffffff-m-fvfvm-vf--ffvmmvffvfvmvm-ffvmmvm-vmf-mu-f-mmum---u-f-m-f---ff--mvvfvfvvvm-fv-f-ffffmff--u--fffffuu-v----vvmfffmf-fuv-m-fvfff-vuu-fv-fffffv", "patterns": { "all": "^\\+1734[2-9]\\d{6}$", "fixed_line": "^\\+1734(?:2(?:0[5-7]|1[3-57]|2[0259]|3[0246-9]|4[0-7]|5[246-9]|6[14-689]|7[29]|8[1-9]|9[3589])|3(?:0[24]|1[0479]|2[1246-9]|3[2-57]|4[2-589]|5[0247]|6[2457]|7[024-689]|8[24-9]|9[0-46-9])|4(?:0[1-578]|1[3-689]|2\\d|3[2-47-9]|4[0-35-9]|5[1-9]|6[1246-9]|7[01579]|8[0-79]|9[3-58])|5(?:0[1368]|1[0238]|2\\d|3[0-589]|4[2-479]|5[13679]|6[157]|7[1-48]|8[25-8]|9[1-35])|6(?:0[156]|1[59]|2[1-37-9]|3[02389]|4[127]|5[4-69]|6[1-35689]|7[125-7]|8[15-79]|9[2579])|7(?:08|1[2-49]|2[0-26-9]|3[26-8]|4[1-4679]|5[237-9]|6[1-49]|79|8[0-69]|9[2-69])|8(?:0[35]|2[36-8]|39|4[0347-9]|5[03-8]|6[249]|7[2389]|8[178]|97)|9(?:02|1[37]|2[128]|3[069]|4[1-467]|5[3-7]|69|7[0135]|8[13-5]|9[14-8]))\\d{4}$", "mobile": "^\\+1734(?:2(?:0[2489]|1[68]|2[36-8]|3[13]|49|5[05]|6[0237]|7[1346-8]|80|9[0-2467])|3(?:0[135689]|12|2[03]|3[09]|4[167]|5[1358]|6[0368]|7[137]|8[013]|95)|4(?:06|1[07]|3[15]|44|50|6[05]|7[3468]|9[167])|5(?:0[24579]|[17][56]|36|4[568]|5[0248]|6[046]|8[134]|9[467])|6(?:0[2489]|1[0237]|2[04-6]|3[4-7]|4[4-69]|5[1278]|6[04]|7[03489]|8[02]|9[134])|7(?:0[69]|1[6-8]|23|3[01359]|4[08]|5[14-6]|6[57]|7[0-35-8]|8[78]|9[078])|8(?:0[27]|1[27-9]|29|3[347]|4[256]|52|6[06]|7[56]|8[35]|9[01369])|9(?:0[457]|[124]5|34|68|7[29]))\\d{4}$", "voip": "^\\+1734(?:2(?:[05][13]|1[029]|2[14]|35|7[05])|3(?:07|1[568]|25|3[168]|40|5[69]|6[19])|4(?:0[09]|[17]2|3[06]|63|88|9[29])|5(?:1[49]|37|4[01]|6[238]|7[079]|8[09]|9[089])|6(?:0[037]|4[38]|53|67|8[348])|7(?:0[247]|1[05]|2[45]|6[68]|74)|8(?:0[08]|2[0-2]|3[28]|6[358]|7[47]|8[0249]|9[25])|9(?:2[679]|3[1-37]|6[167]|77|8[27]|9[29]))\\d{4}$" }, "sandbox": { "input": "+17345550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+17345550123", "international": "+1 734-555-0123", "national": "(734) 555-0123", "rfc3966": "tel:+1-734-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "734", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 734?", "answer": "Area code 734 is in Michigan, in the United States: all 730 of its exchanges on record are there. From abroad it is dialled +1 734, then the seven-digit number." }, { "question": "Is a 734 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 730 exchanges on record in 734, 206 (28%) were allocated as mobile, 391 (54%) as fixed line, 104 (14%) as VoIP and 29 (4%) 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 734?", "answer": "27 carriers hold exchanges in 734 on record; the most: AT&T (241), Verizon (124) and T-Mobile (69). 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 734 phone number?", "answer": "In E.164 a 734 number matches ^\\+1734[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 (734) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP." } ], "neighbours": { "sameRegion": [ "us-231", "us-248", "us-269", "us-313", "us-517", "us-586", "us-616", "us-810", "us-906", "us-947", "us-989" ], "previous": "us-732", "next": "us-737" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 730, "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" } ] } }