{ "url": "https://phonelookup.dev/prefix/us-606", "npa": "606", "slug": "us-606", "iso": "US", "country": "United States", "regions": [ { "code": "KY", "name": "Kentucky", "exchanges": 668 } ], "exchanges": 668, "known": 645, "byLineType": { "fixed_line": 310, "mobile": 227, "unknown": 23, "voip": 108 }, "carriers": [ { "name": "AT&T", "exchanges": 158, "byLineType": { "fixed_line": 61, "mobile": 95, "voip": 2 }, "ranges": [ "204–205", "218–219", "224", "226", "230–231", "233", "236–238", "242", "246", "248", "258", "269", "272–273", "275–276", "280", "282", "285", "289–291", "296", "298", "300", "302", "304", "306–307", "310", "315–321", "335–337", "344", "353", "355–358", "362", "365", "367", "377", "381", "391", "395", "406", "413", "417", "422", "424–425", "427", "432–434", "437", "443", "454", "456", "460–461", "464–465", "468–469", "481", "483–484", "499", "502", "504", "507", "521", "523–524", "526", "528", "534", "539–541", "549", "560", "562–564", "572–574", "579", "581–582", "584", "588", "603", "627", "631–633", "638–639", "647", "661", "663–664", "666", "669", "693–694", "706", "733", "748", "754", "776", "781–782", "786", "788–789", "795", "801", "813", "835", "842", "844", "848", "854–855", "874", "885–886", "889", "893", "899", "922–923", "970", "975", "990–994", "998–999" ] }, { "name": "Windstream", "exchanges": 117, "byLineType": { "fixed_line": 117 }, "ranges": [ "247", "254", "256", "267", "274", "277", "286", "292", "324–327", "329–330", "340", "343", "346", "348", "373", "379", "382", "387", "396", "401", "408", "423", "435–436", "439–440", "448", "451", "453", "467", "472–476", "487", "492", "494", "532", "542–543", "545–546", "559", "561", "578", "589", "596", "598–599", "636", "674–679", "683", "715", "719", "721", "723–724", "726", "728", "735", "737", "739–740", "742", "745", "747", "750", "756–759", "763", "780", "783–784", "787", "796", "798–799", "819", "832–834", "836–837", "843", "845", "847", "849", "862", "864–865", "871", "876–878", "882–883", "895", "898", "920–921", "925", "928–929", "931–932" ] }, { "name": "Sinch (Inteliquent)", "exchanges": 79, "byLineType": { "voip": 79 }, "ranges": [ "203", "220", "240", "281", "283–284", "288", "293–294", "313", "328", "332", "351–352", "361", "366", "370", "385", "403", "412", "414–415", "418", "426", "429", "441", "444", "457", "459", "463", "503", "509", "514", "531", "551", "586", "607", "610", "617", "644–646", "649", "659", "667", "690", "695", "698", "705", "713–714", "716–718", "722", "729", "731–732", "752–753", "755", "764", "766", "769", "772–775", "839", "860", "896", "924", "926", "934", "945", "953", "956", "981", "989" ] }, { "name": "Verizon", "exchanges": 58, "byLineType": { "fixed_line": 8, "mobile": 50 }, "ranges": [ "202", "206–207", "209–210", "217", "221", "225", "235", "245", "249", "260", "301", "303", "305", "308–309", "312", "314", "323", "331", "341–342", "350", "359", "369", "371", "375", "383", "386", "388–389", "402", "404–405", "407", "416", "431", "471", "510", "515–516", "530", "548", "554", "575", "594–595", "670–671", "687–688", "744", "765", "831", "872", "875", "939" ] }, { "name": "Appalachian Wireless", "exchanges": 42, "byLineType": { "mobile": 42 }, "ranges": [ "213", "216", "223", "234", "239", "243", "299", "334", "339", "347", "419", "438", "477", "482", "493", "495–497", "501", "505", "508", "525", "527", "538", "567–569", "616", "623–626", "634", "643", "681", "710", "791–794", "821", "853" ] }, { "name": "Lumen", "exchanges": 38, "byLineType": { "fixed_line": 38 }, "ranges": [ "244", "252", "257", "259", "266", "390", "392–394", "488", "517", "536", "547", "618–621", "629", "641", "653–658", "685", "727", "824", "826", "879", "887", "894", "907", "909–910", "913", "930", "947" ] }, { "name": "T-Mobile", "exchanges": 27, "byLineType": { "mobile": 27 }, "ranges": [ "215", "227", "232", "253", "255", "261–263", "271", "278", "384", "428", "449", "462", "498", "513", "552", "571", "615", "622", "635", "682", "689", "703", "767", "770", "802" ] }, { "name": "Spectrum", "exchanges": 19, "byLineType": { "fixed_line": 19 }, "ranges": [ "201", "241", "380", "420", "470", "485", "535", "576", "660", "691", "699", "707–709", "712", "777", "806", "825", "960" ] }, { "name": "Emergency Networks", "exchanges": 12, "byLineType": { "mobile": 12 }, "ranges": [ "363", "399", "410", "421", "445", "450", "602", "608–609", "628", "648", "684" ] }, { "name": "Fractel", "exchanges": 10, "byLineType": { "voip": 10 }, "ranges": [ "222", "333", "345", "400", "500", "566", "800", "888", "900", "944" ] }, { "name": "Mikrotec Communications", "exchanges": 9, "byLineType": { "fixed_line": 9 }, "ranges": [ "208", "212", "430", "446", "637", "949", "963", "969", "984" ] }, { "name": "Paetec Itel", "exchanges": 9, "byLineType": { "fixed_line": 9 }, "ranges": [ "200", "518", "600–601", "604–605", "612–614" ] }, { "name": "Foothills Telephone Cooperative", "exchanges": 8, "byLineType": { "fixed_line": 8 }, "ranges": [ "228", "265", "297", "349", "652", "673", "686", "884" ] }, { "name": "Mountain Telephone", "exchanges": 7, "byLineType": { "fixed_line": 7 }, "ranges": [ "522", "662", "668", "725", "738", "743", "768" ] }, { "name": "TDS Telecom", "exchanges": 7, "byLineType": { "fixed_line": 7 }, "ranges": [ "279", "295", "374", "378", "398", "558", "672" ] }, { "name": "Thacker-Grigsby Telephone Company", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "251", "368", "447", "642", "785", "946" ] }, { "name": "COMMIO LLC", "exchanges": 5, "byLineType": { "voip": 5 }, "ranges": [ "322", "338", "360", "409", "867" ] }, { "name": "Coalfields Telephone Company", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "452", "478–479", "587" ] }, { "name": "Peoples Rural Telephone Cooperative", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "287", "364", "593", "965" ] }, { "name": "Twilio International", "exchanges": 4, "byLineType": { "voip": 4 }, "ranges": [ "458", "466", "491", "697" ] }, { "name": "Integrated Path Communications", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "250", "455", "650" ] }, { "name": "Optimum", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "264", "506", "519" ] }, { "name": "Skyetel", "exchanges": 3, "byLineType": { "voip": 3 }, "ranges": [ "808", "822", "997" ] }, { "name": "Highland Telephone Cooperative", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "354", "376" ] }, { "name": "IP Horizon", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "486", "489" ] }, { "name": "Armstrong Telecommunications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "585" ] }, { "name": "Bandwidth.com", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "268" ] }, { "name": "Brightlink Communications", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "442" ] }, { "name": "CSC Wireless LLC", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "229" ] }, { "name": "Cellular Services", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "372" ] }, { "name": "Mcc Telephony", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "557" ] }, { "name": "Opentact", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "529" ] }, { "name": "Peoples Telecommunications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "919" ] }, { "name": "TELNYX", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "214" ] } ], "grid": "ffmvfmmmfmmufmvmmmfmvmvmmmmmfmmmmmmmmfmmvffmfmfffmfffmfmffffmmmmffffvmummmfmmfmfmvmvvfffvvmmfvvffffmmmmmmmmmmmmumvfmmmmmmmvfffffvffmvvmmmfvmfmmfmvfmffmvvfffmvfmvvmmffvmfmvmfffmfffffmfmmvmffmfmfffff-fmvfmvmfmmfvmuvmvvmmvmfmmfmmvfmvffffmfffmffvvmvmfffmmfffmffvvvmmmvfmvfmmfmfffffmff-mmmmfvffv-vfmfmmmmmvmfvmmfmmvmu-mvmmfff-mffmmfmfffvf-mff-mfmmff-fffmf-vm-fu-fffmfmff-vmmm-mmffmf-fm-mm-mfvfmf-u-fmmf-ffffmmffuvmmvufffmmvffffmmmmmmmf-fffmmffff-ffmvvvmmvf-fffffffvfmfff-fvfmmmffffffff-mmfmffmmmvf-fmv-vvfu--m-vmfffmufvvfvvvf-fvffffffv-vvm-f-ffff-ffff-fm-fuvvfvffff-u-fvmvmfvm-vvvvmf--fmmfffffff-mmmmmf-ffvmm---f-v--u-m-----f-mv-fff--u-mffffff-v--mfff-fff---mmf---uv-f-ff-v---fm-fmffff--fffmffvf---mffv-fmv------f-ffu-f-----fffmmvfvufffff-v----m----vvff-fu--v--v-uuf--f-f---ff----mu----v--f---uvfffff--vff", "patterns": { "all": "^\\+1606[2-9]\\d{6}$", "fixed_line": "^\\+1606(?:2(?:0[0148]|1[28]|28|37|4[1246-8]|5[0-246-9]|6[4-7]|7[479]|8[5-7]|9[25-8])|3(?:14|2[3-79]|3[07]|4[03689]|5[3-58]|6[458]|7[2-46-9]|8[0278]|9[02-68])|4(?:0[158]|2[037]|3[0-35-79]|4[06-8]|5[1-356]|6[47]|7[02-689]|8[578]|9[24])|5(?:0[26]|1[7-9]|2[23689]|3[02569]|4[235-79]|5[47-9]|6[134]|7[3468]|8[579]|9[3689])|6(?:0[0145]|1[2-489]|2[019]|3[1-36-9]|4[12]|5[02-8]|6[02-468]|7[2-9]|8[356]|9[139])|7(?:0[7-9]|1[259]|2[13-8]|3[57-9]|4[02-57]|5[046-9]|6[38]|77|8[03-9]|9[689])|8(?:06|19|2[4-6]|3[2-7]|4[3-57-9]|55|6[245]|7[146-9]|8[2-4679]|9[458])|9(?:0[79]|1[039]|2[01589]|3[0-2]|4[679]|6[0359]|70|84|9[0-489]))\\d{4}$", "mobile": "^\\+1606(?:2(?:0[25-79]|1[035-79]|2[13-79]|3[0-689]|4[359]|5[35]|6[0-39]|7[1-3568]|8[02]|9[019])|3(?:0\\d|1[025-9]|2[01]|3[14-69]|4[1247]|5[069]|6[2379]|7[15]|8[13469]|9[19])|4(?:0[2467]|1[03679]|2[12458]|3[48]|4[359]|5[04]|6[0-2589]|7[17]|8[1-4]|9[35-9])|5(?:0[14578]|1[0356]|2[1457]|3[48]|4[018]|52|6[027-9]|7[1259]|8[1248]|9[45])|6(?:0[2389]|1[56]|2[2-8]|3[45]|4[378]|6[19]|7[01]|8[1247-9]|94)|7(?:0[36]|10|33|48|6[57]|7[06]|8[12]|9[1-5])|8(?:0[12]|13|[23]1|42|5[34]|7[25]|85|9[39])|9(?:2[23]|39|75))\\d{4}$", "voip": "^\\+1606(?:2(?:03|14|2[02]|40|68|8[13489]|9[34])|3(?:13|2[28]|3[238]|[48]5|5[127]|6[016]|70)|4(?:0[039]|1[2458]|[28][69]|4[124]|5[7-9]|6[36]|91)|5(?:0[039]|14|[35]1|[68]6)|6(?:[06]7|1[07]|4[4-69]|59|9[0578])|7(?:05|1[346-8]|2[29]|3[12]|5[235]|6[469]|7[2-5])|8(?:0[08]|22|39|6[07]|88|96)|9(?:00|2[46]|34|4[45]|5[36]|8[19]|97))\\d{4}$" }, "sandbox": { "input": "+16065550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+16065550123", "international": "+1 606-555-0123", "national": "(606) 555-0123", "rfc3966": "tel:+1-606-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "606", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 606?", "answer": "Area code 606 is in Kentucky, in the United States: all 668 of its exchanges on record are there. From abroad it is dialled +1 606, then the seven-digit number." }, { "question": "Is a 606 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 668 exchanges on record in 606, 227 (34%) were allocated as mobile, 310 (46%) as fixed line, 108 (16%) as VoIP and 23 (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 606?", "answer": "34 carriers hold exchanges in 606 on record; the most: AT&T (158), Windstream (117) and Sinch (Inteliquent) (79). 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 606 phone number?", "answer": "In E.164 a 606 number matches ^\\+1606[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 (606) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP." } ], "neighbours": { "sameRegion": [ "us-270", "us-364", "us-502", "us-859" ], "previous": "us-605", "next": "us-607" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 668, "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" } ] } }