{ "url": "https://phonelookup.dev/prefix/us-517", "npa": "517", "slug": "us-517", "iso": "US", "country": "United States", "regions": [ { "code": "MI", "name": "Michigan", "exchanges": 639 } ], "exchanges": 639, "known": 617, "byLineType": { "fixed_line": 361, "mobile": 178, "unknown": 22, "voip": 78 }, "carriers": [ { "name": "AT&T", "exchanges": 159, "byLineType": { "fixed_line": 114, "mobile": 40, "voip": 5 }, "ranges": [ "200", "203", "205", "218", "221", "223", "225", "234–235", "241", "244", "247", "249–250", "252–253", "267", "270", "272–273", "284", "288", "292", "297", "301", "304", "306–307", "310", "315–317", "321–325", "327", "332–337", "339", "342", "346–347", "349", "351", "353", "355", "363–364", "367", "371–374", "377–378", "381", "384", "387", "389", "393–394", "398", "401", "412", "418", "432", "437", "439", "442", "465", "474", "477", "480–485", "487", "494", "515", "518", "529", "536", "540–541", "543", "545–546", "548", "552", "575", "589", "607", "615", "617", "619", "623", "629–630", "636", "645–647", "649", "663–664", "676", "694", "699", "702–703", "706", "721", "726", "742", "748", "750", "755", "763–764", "768–769", "775", "780", "782–784", "787–789", "796", "802", "817", "840–841", "849", "852", "880", "882", "884–887", "892", "919", "936", "940", "960", "962", "974", "990", "993" ] }, { "name": "Verizon", "exchanges": 78, "byLineType": { "fixed_line": 17, "mobile": 61 }, "ranges": [ "212", "222", "227", "230–231", "233", "236", "242–243", "245", "256–257", "259–260", "262", "268", "281–282", "285", "290", "294", "308", "318–320", "331", "338", "345", "375", "386", "388", "395–396", "416", "420", "425", "435", "438", "444", "449", "462", "466", "499", "512–513", "525–526", "539", "554", "581–582", "599", "600", "604", "614", "643", "648", "662", "667", "709", "722", "740", "745", "759", "825", "876–877", "881", "896–899", "927–928", "930", "966", "968", "983" ] }, { "name": "ACD Telecom", "exchanges": 56, "byLineType": { "fixed_line": 56 }, "ranges": [ "594", "597", "684", "691–692", "695–696", "698", "760", "790", "792–793", "890–891", "895", "900", "903", "906–907", "909", "912", "915", "921–923", "925–926", "929", "932–933", "938", "941–942", "946", "948–949", "953", "957", "961", "963–965", "970", "972", "978–979", "981", "984–985", "991", "994–999" ] }, { "name": "Frontier", "exchanges": 56, "byLineType": { "fixed_line": 56 }, "ranges": [ "238–239", "254", "263–266", "278–279", "283", "287", "296", "312", "357", "368–369", "383", "423–424", "431", "448", "451", "456", "458", "467", "486", "521–524", "531", "547", "563", "565", "567–569", "592", "596", "622", "626–628", "639", "641", "651", "655", "668–669", "688", "741", "765", "767", "815", "851", "869" ] }, { "name": "T-Mobile", "exchanges": 53, "byLineType": { "mobile": 53 }, "ranges": [ "202", "204", "206", "214–215", "240", "261", "280", "302–303", "358", "362", "366", "380", "391–392", "402–404", "410", "414", "428", "490", "505", "514", "528", "551", "553", "588", "605", "610", "612", "652", "672–673", "677", "712", "719", "749", "795", "798", "812", "819", "861–862", "894", "902", "914", "917–918", "937", "944", "980" ] }, { "name": "Lumen", "exchanges": 36, "byLineType": { "fixed_line": 33, "voip": 3 }, "ranges": [ "208", "213", "219–220", "224", "305", "429", "441", "459", "507", "542", "549", "566", "579–580", "583", "618", "705", "714", "728", "731", "743", "756", "774", "781", "803", "826", "833", "853", "858", "868", "878–879", "908", "910", "939" ] }, { "name": "Onvoy", "exchanges": 30, "byLineType": { "voip": 30 }, "ranges": [ "201", "210", "237", "271", "274", "276", "289", "293", "300", "348", "352", "354", "359", "365", "370", "489", "492", "500", "510", "537", "550", "616", "624", "666", "686", "715", "777", "816", "888", "955" ] }, { "name": "Telnet Worldwide", "exchanges": 29, "byLineType": { "fixed_line": 29 }, "ranges": [ "207", "330", "519", "621", "631", "634", "653–654", "658–659", "671", "689", "710", "716–717", "724", "727", "753", "766", "772", "809", "813", "848", "872", "905", "913", "916", "920", "947" ] }, { "name": "123.Net Inc", "exchanges": 14, "byLineType": { "fixed_line": 14 }, "ranges": [ "544", "584", "609", "642", "679", "682", "701", "732", "736", "762", "785", "828", "873", "992" ] }, { "name": "American Messaging", "exchanges": 10, "byLineType": { "mobile": 10 }, "ranges": [ "226", "251", "255", "360", "390", "407", "464", "794", "804", "973" ] }, { "name": "Paetec Itel", "exchanges": 9, "byLineType": { "fixed_line": 9 }, "ranges": [ "455", "488", "586", "797", "827", "889", "945", "969", "975" ] }, { "name": "USA Mobility", "exchanges": 9, "byLineType": { "mobile": 9 }, "ranges": [ "228–229", "232", "309", "340–341", "534", "564", "571" ] }, { "name": "Bandwidth.com", "exchanges": 7, "byLineType": { "voip": 7 }, "ranges": [ "209", "258", "295", "299", "361", "379", "931" ] }, { "name": "Comcast", "exchanges": 6, "byLineType": { "voip": 6 }, "ranges": [ "376", "382", "408", "577", "657", "977" ] }, { "name": "T3 Communications", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "217", "417", "470", "502", "504", "606" ] }, { "name": "Ton80 Communications", "exchanges": 6, "byLineType": { "voip": 6 }, "ranges": [ "399", "426–427", "733", "746", "837" ] }, { "name": "Fractel", "exchanges": 5, "byLineType": { "voip": 5 }, "ranges": [ "356", "758", "786", "800", "842" ] }, { "name": "TDS Telecom", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "445", "468", "625", "675" ] }, { "name": "Clear Rate Communications", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "574", "836", "867" ] }, { "name": "Deerfield Farmers' Telephone Company", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "446–447", "595" ] }, { "name": "Emergency Networks", "exchanges": 3, "byLineType": { "mobile": 3 }, "ranges": [ "400", "516", "557" ] }, { "name": "Spectrum", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "298", "901", "924" ] }, { "name": "Brightlink Communications", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "344", "440" ] }, { "name": "First Communications", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "680", "883" ] }, { "name": "Peerless Network", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "246", "457" ] }, { "name": "Skyetel", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "633", "744" ] }, { "name": "Twilio International", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "409", "893" ] }, { "name": "Voip Street", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "329", "471" ] }, { "name": "Access2Go", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "291" ] }, { "name": "Ahoi", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "587" ] }, { "name": "COMMIO LLC", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "770" ] }, { "name": "CSC Wireless LLC", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "216" ] }, { "name": "Cynergycomm.Net", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "708" ] }, { "name": "Daystarr Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "697" ] }, { "name": "Dish Wireless", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "326" ] }, { "name": "HD Carrier", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "350" ] }, { "name": "IP Horizon", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "328" ] }, { "name": "Nuso", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "314" ] }, { "name": "Ogden Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "443" ] }, { "name": "Sand Creek Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "436" ] }, { "name": "Springport Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "857" ] }, { "name": "Terra Nova Telecom", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "855" ] }, { "name": "Vonage", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "730" ] }, { "name": "Waldron Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "286" ] }, { "name": "Wavenation", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "385" ] }, { "name": "Westphalia Broadband", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "277" ] }, { "name": "Wiretap Telecom", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "275" ] }, { "name": "Wow! Internet", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "343" ] } ], "grid": "mvmfmfmfvvvumfmmmfmfvmfffmmmmmmmmfmvmvffmfmmfmvfummmmffmmmvmmmmffffffumvffvfvfffmmmffmffmvmvfvmvfmfvvmmmmfmmfmvufufmfmffmfffffmfvvfmffffffffmmffvfffvfvfvfvfvfmvmvmffvmfffvffffmvfmvmfvfmffmmmmmmffmm-mvmmmmm--mvvmuf-m-mfm-m--ffmvvmv-ff--mffmfvfmffffffm-f---ffvff--m-mvfff-fv--m--m--mffffffffvm-v-m----mv-f-fm-f--vummmmmumf-ffffmm-mf-f--m-fv-mffffffffffvmfmmu-m-----fmfffff-m--ff-v-ffmmff-ffmf--f-ffff-mf---mmff-fmum-mmvmff-fffvfffffff-vf-f--f-ffm-fffmf-fmfff-vff--mff-vmff-fmm-ffm-ff-f-f-v-ff-ff-ffffffufff-ff-fffum-fvff-m-ff-f-fff-vffvu-f---mfvfvmv-vmf--f-mf-vmf-ffffffffv-f-fm-v--ffffffvffff-ffmmffm-v-ffm----fuumf-fvf-m-----mfff----f--fv--ffv-----ff-fff-v-ff--mm----fff--ff--fmfffmffffffvffffvmfmmmmffmf-ffffffuffmffmmmfffffffmmfmvff--mmffmff-mfffffu--f-v-fuufffffff-fff-fmmfuvffmf-mff--uumfffffffff", "patterns": { "all": "^\\+1517[2-9]\\d{6}$", "fixed_line": "^\\+1517(?:2(?:0[357]|1[379]|2[2-4]|3[389]|4[147]|5[34]|6[3-8]|7[2357-9]|8[3467]|9[268])|3(?:0[58]|1[24689]|2[1-57]|3[02-9]|4[235-79]|5[1357]|6[347-9]|7[1-47]|8[1356]|9[34])|4(?:1[27]|2[34]|3[12679]|4[13-8]|5[15689]|6[6-8]|70|8[1-8])|5(?:0[247]|19|2[1-49]|3[16]|4\\d|52|6[35-9]|7[459]|8[034679]|9[24-7])|6(?:0[0679]|1[89]|2[1-35-9]|3[01469]|4[125-79]|5[13-589]|6[3489]|7[1569]|8[02489]|9[124-9])|7(?:0[1-35689]|1[0467]|2[1246-8]|3[126]|4[13]|5[036]|6[02-9]|7[24]|8[0-57-9]|9[02367])|8(?:0[239]|1[357]|2[6-8]|3[36]|4[0189]|5[1-378]|6[7-9]|7[23689]|8[02-79]|9[0-25])|9(?:0[0135-9]|1[02356]|2[0-69]|3[2389]|4[125-9]|5[37]|6[0-689]|7[02589]|8[145]|9[1-9]))\\d{4}$", "mobile": "^\\+1517(?:2(?:0[0246]|1[24-68]|2[15-9]|3[0-246]|4[02359]|5[0-25-79]|6[0-2]|70|8[0-258]|9[047])|3(?:0[1-4679]|1[57]|2[06]|31|4[01]|58|6[026]|7[58]|8[047-9]|9[0-2568])|4(?:0[0-47]|1[0468]|2[058]|3[58]|4[29]|6[24]|7[47]|80|9[049])|5(?:05|1[2-68]|2[568]|3[49]|5[1347]|64|71|8[128]|99)|6(?:0[45]|1[02457]|4[38]|52|6[27]|7[237])|7(?:1[29]|4[059]|5[59]|75|9[458])|8(?:04|1[29]|25|6[12]|77|81|9[46-9])|9(?:02|1[47-9]|2[78]|3[067]|4[04]|7[34]|8[03]|90))\\d{4}$", "voip": "^\\+1517(?:2(?:0[189]|[12]0|3[57]|46|58|7[146]|89|9[1359])|3(?:[01]0|2[89]|4[48]|5[02469]|6[15]|7[069]|82|99)|4(?:0[89]|2[679]|40|57|65|71|89|92)|5(?:[015]0|[37]7)|6(?:[168]6|24|33|57)|7(?:15|3[03]|4[2468]|58|7[07]|86)|8(?:00|16|37|42|55|88|93)|9(?:31|55|77))\\d{4}$" }, "sandbox": { "input": "+15175550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+15175550123", "international": "+1 517-555-0123", "national": "(517) 555-0123", "rfc3966": "tel:+1-517-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "517", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 517?", "answer": "Area code 517 is in Michigan, in the United States: all 639 of its exchanges on record are there. From abroad it is dialled +1 517, then the seven-digit number." }, { "question": "Is a 517 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 639 exchanges on record in 517, 178 (28%) were allocated as mobile, 361 (56%) as fixed line, 78 (12%) as VoIP and 22 (3%) 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 517?", "answer": "48 carriers hold exchanges in 517 on record; the most: AT&T (159), Verizon (78) and ACD Telecom (56). 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 517 phone number?", "answer": "In E.164 a 517 number matches ^\\+1517[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 (517) 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-586", "us-616", "us-734", "us-810", "us-906", "us-947", "us-989" ], "previous": "us-516", "next": "us-518" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 639, "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" } ] } }