{ "url": "https://phonelookup.dev/prefix/us-540", "npa": "540", "slug": "us-540", "iso": "US", "country": "United States", "regions": [ { "code": "VA", "name": "Virginia", "exchanges": 800 } ], "exchanges": 800, "known": 787, "byLineType": { "fixed_line": 395, "mobile": 272, "unknown": 13, "voip": 120 }, "carriers": [ { "name": "Verizon", "exchanges": 283, "byLineType": { "fixed_line": 204, "mobile": 79 }, "ranges": [ "204", "206", "209", "216", "220", "223–224", "226", "230", "234–235", "239", "245", "248–250", "253–254", "259", "262", "265", "267–270", "272–273", "277", "280", "284–286", "288–290", "292", "296–298", "308", "310", "315", "321", "324", "326", "329", "332–333", "336–338", "341–345", "347", "349", "351", "359", "361–362", "364", "366", "368", "370–375", "377–378", "380–382", "384", "387", "389", "394", "399", "402", "414", "419–423", "427–428", "430–434", "438–439", "442", "447", "456", "460", "469", "471", "480", "486–487", "490", "492", "498", "507", "510", "512", "520–521", "524–525", "529", "535–536", "542–543", "545", "547–548", "552–554", "557–558", "561–564", "568", "571", "574", "581–582", "586–589", "592", "613", "621", "629", "633–634", "639", "643–644", "653–654", "656–663", "665", "667–668", "672", "674", "677–680", "682", "687", "693", "710", "716–718", "720", "722–723", "725–728", "731", "733", "739", "741–742", "750–752", "759", "769", "772", "774–776", "785–786", "788", "792", "797–798", "801–803", "808–810", "820", "822–823", "825", "827–835", "837", "851", "853–855", "857–858", "867–869", "872", "877", "879", "882", "885–888", "890–892", "894–896", "898–899", "903", "906", "910", "917", "921–923", "929", "937–938", "947–948", "951", "953–955", "958", "960–961", "967–968", "972", "977", "980–983", "985–987", "989", "994", "997", "999" ] }, { "name": "T-Mobile", "exchanges": 89, "byLineType": { "mobile": 89 }, "ranges": [ "205", "238", "241", "243–244", "251–252", "257", "260", "263", "271", "276", "287", "293–295", "313", "316", "323", "325", "327", "335", "379", "383", "385", "397–398", "408", "415", "429", "435", "440", "446", "448", "451", "455", "457", "461", "466–467", "476", "478", "481", "497", "505", "514", "519", "522", "537", "560", "569", "578", "583", "605", "607", "615", "620", "627", "630", "641", "649", "664", "671", "676", "683", "685", "688", "749", "757", "762", "768", "784", "793", "805", "807", "816–819", "836", "849", "859", "878", "914–915", "974–975", "993", "995" ] }, { "name": "AT&T", "exchanges": 81, "byLineType": { "fixed_line": 15, "mobile": 66 }, "ranges": [ "207", "212", "219", "222", "229", "233", "246–247", "255–256", "266", "282", "300", "303", "305", "314", "319", "353–355", "369", "376", "405–407", "409", "413", "424–426", "449", "454", "494", "532–533", "538–539", "550", "556", "573", "577", "602", "623–624", "669", "681", "690", "696–697", "714", "729", "734", "746", "748", "758", "760–761", "764", "771", "783", "814–815", "826", "840–842", "845–848", "850", "866", "873", "913", "920", "935", "940", "945", "952", "991", "998" ] }, { "name": "Lumen", "exchanges": 80, "byLineType": { "fixed_line": 78, "voip": 2 }, "ranges": [ "200", "227–228", "231–232", "236", "242", "258", "261", "264", "283", "291", "301–302", "307", "334", "346", "348", "352", "360", "365", "367", "393", "412", "416", "462–464", "482–485", "489", "491", "504", "518", "526–527", "531", "549", "551", "576", "579", "585", "601", "608–609", "622", "631", "635–637", "645", "648", "652", "675", "684", "689", "692", "694", "707", "709", "713", "719", "721", "743", "767", "778", "799", "821", "843", "860", "904–905", "907–908", "912", "916", "931", "971" ] }, { "name": "Onvoy", "exchanges": 30, "byLineType": { "voip": 30 }, "ranges": [ "202–203", "210", "215", "274", "304", "340", "410", "417", "453", "515", "534", "546", "590", "614", "666", "701", "703", "779–781", "876", "880", "900", "919", "930", "934", "956–957", "963" ] }, { "name": "Bandwidth.com", "exchanges": 24, "byLineType": { "voip": 24 }, "ranges": [ "208", "213", "328", "390", "418", "437", "443–445", "450", "458", "495", "509", "584", "612", "617", "632", "642", "705", "753", "782", "883", "918", "924" ] }, { "name": "UScellular", "exchanges": 23, "byLineType": { "mobile": 23 }, "ranges": [ "309", "312", "320", "330", "339", "357", "391–392", "488", "493", "570", "572", "580", "598–599", "616", "691", "695", "765", "813", "871", "874–875" ] }, { "name": "Comcast", "exchanges": 21, "byLineType": { "voip": 21 }, "ranges": [ "217", "225", "237", "356", "388", "400", "404", "479", "508", "628", "686", "699", "702", "732", "754–756", "777", "812", "901–902" ] }, { "name": "CoreTel", "exchanges": 20, "byLineType": { "fixed_line": 20 }, "ranges": [ "218", "281", "306", "322", "395", "452", "472", "500–503", "506", "513", "516–517", "528", "530", "715", "738", "766" ] }, { "name": "Lumos Telephone", "exchanges": 20, "byLineType": { "fixed_line": 20 }, "ranges": [ "221", "473", "567", "591", "747", "862–863", "884", "928", "932", "941–943", "946", "949", "962", "965–966", "969", "992" ] }, { "name": "Paetec Itel", "exchanges": 11, "byLineType": { "fixed_line": 11 }, "ranges": [ "278", "317–318", "441", "523", "597", "603–604", "735–737" ] }, { "name": "Shenandoah Telephone Company", "exchanges": 10, "byLineType": { "fixed_line": 10 }, "ranges": [ "331", "436", "459", "465", "477", "740", "852", "856", "933", "984" ] }, { "name": "TELNYX", "exchanges": 10, "byLineType": { "voip": 10 }, "ranges": [ "600", "606", "655", "708", "724", "730", "861", "889", "893", "973" ] }, { "name": "Peerless Network", "exchanges": 9, "byLineType": { "voip": 9 }, "ranges": [ "386", "401", "496", "594–595", "619", "698", "744", "770" ] }, { "name": "Frontier", "exchanges": 8, "byLineType": { "fixed_line": 8 }, "ranges": [ "559", "593", "651", "745", "763", "789", "927", "970" ] }, { "name": "Emergency Networks", "exchanges": 7, "byLineType": { "mobile": 7 }, "ranges": [ "540–541", "670", "673", "704", "804", "870" ] }, { "name": "Shentel Communications Company", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "214", "565", "773", "838", "865", "909" ] }, { "name": "MGW Telephone Company", "exchanges": 5, "byLineType": { "fixed_line": 5 }, "ranges": [ "279", "396", "925", "939", "996" ] }, { "name": "Fractel", "exchanges": 4, "byLineType": { "voip": 4 }, "ranges": [ "240", "299", "844", "978" ] }, { "name": "HD Carrier", "exchanges": 4, "byLineType": { "voip": 4 }, "ranges": [ "618", "796", "806", "979" ] }, { "name": "TDS Telecom", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "596", "839", "864", "897" ] }, { "name": "Vonage", "exchanges": 4, "byLineType": { "voip": 4 }, "ranges": [ "566", "646", "791", "944" ] }, { "name": "Brightlink Communications", "exchanges": 3, "byLineType": { "mobile": 2, "voip": 1 }, "ranges": [ "795", "824", "881" ] }, { "name": "CSC Wireless LLC", "exchanges": 3, "byLineType": { "mobile": 3 }, "ranges": [ "475", "575", "706" ] }, { "name": "Highland Telephone Cooperative", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "468", "474", "499" ] }, { "name": "Twilio International", "exchanges": 3, "byLineType": { "voip": 3 }, "ranges": [ "470", "936", "990" ] }, { "name": "Airus Inc", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "403", "926" ] }, { "name": "COMMIO LLC", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "640", "988" ] }, { "name": "Dish Wireless", "exchanges": 2, "byLineType": { "mobile": 2 }, "ranges": [ "275", "964" ] }, { "name": "MGW Networks", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "610", "712" ] }, { "name": "Optimum", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "358", "787" ] }, { "name": "Pembroke Telephone Cooperative", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "544", "626" ] }, { "name": "YMax Communications", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "638", "650" ] }, { "name": "Access2Go", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "794" ] }, { "name": "Airespring", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "790" ] }, { "name": "IDT America", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "625" ] }, { "name": "IP Horizon", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "647" ] }, { "name": "New Hope Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "363" ] }, { "name": "North River Telephone Cooperative", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "350" ] }, { "name": "Terra Nova Telecom", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "800" ] }, { "name": "USA Mobility", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "201" ] } ], "grid": "fmvvfmfmvfvumvfvmvfmmfmmfvmffmmffmfffvmmvmfmmfmmffmmmffmmmfmmffmfffmffmmmmvmmfffmffffmfmffmfmmmmfffvmffmvmffmmfummmmmffmmmfmfmfmvfmffmfmmffmvffffffffffffmmmvmfmfffffffffffffffffffmfffmfmvfvfvmmvfffmmfvvffvmmmmmvufmmmfvvmmmmfmmmffmmmfffmfvffmffvvvmmmmvmfvmmfmvfmmffffmmffvmfffmmfmvmmfffvmmmfmfmmfvvmmffffffmffvvfuffmvfffmmmmfmmfffmffmmvffmmmmmffffvfffmffffumfffmfffffvffmmmmffmfmmfmffmvfffmmvfffvvffmmvffffmvmfffuvmvmmvvvmmfmmffmvmmfvfmfffvfvmvfffvvfmvffffvmfffmfffmfvffmmmfmffmmfmmfmmfmvfmfmmfffmffvvuvvvmvmfvffuffmffmmfffffvfffmmvfvfmffffmffmfvfmfmmmffvvvvmmmmmmfmmffmfvmfffffvfvvvvmmfffffvvfmvmvmmfvfffmmvmmmmuvmmmmmmmmffmvfffffmffffmmfffmmmfvmmmmmmffffffffmfvffffffffmmfmmmvfmfvmfvfffffvfffvffffffvvvmffmfffmufmmmffvvmfffvfffffvfffvmvfmfmfffvfffffufffffvvmumffvmfffmffffvmmufvvffffffffvfvffmfmffmf", "patterns": { "all": "^\\+1540[2-9]\\d{6}$", "fixed_line": "^\\+1540(?:2(?:0[0469]|1[48]|2[1478]|3[124-6]|4[2589]|5[348]|6[124-689]|7[7-9]|8[1-4689]|9[16-8])|3(?:0[1267]|1[078]|2[2469]|3[12478]|4[1-9]|5[0-28]|6\\d|7[0-8]|8[0-2479]|9[4-69])|4(?:0[23]|1[26]|2[378]|3[2-4689]|4[12]|5[269]|6[2-589]|7[2-47]|8[2-49]|9[149])|5(?:0[0-467]|1[0236-8]|2[36-8]|3[0156]|4[2-57-9]|5[1-47-9]|6[1-578]|7[3469]|8[125-7]|9[1-367])|6(?:0[1-489]|10|2[256]|3[135-79]|4[3-58]|5[1-47-9]|6[1-3578]|7[2458]|8[1479]|9[2-467])|7(?:0[79]|1[023569]|2[0-35-7]|3[135-8]|4[01357]|5[12]|6[3679]|7[2-68]|8[5-9]|9[29])|8(?:0[1-3]|2[125-9]|3[1-47-9]|43|5[1-8]|6[02-9]|7[279]|8[24-8]|9[0-24-9])|9(?:0[457-9]|1[267]|[24][1-35-9]|3[1-379]|5[1-5]|6[125-79]|7[0-27]|8[0-79]|9[124679]))\\d{4}$", "mobile": "^\\+1540(?:2(?:0[157]|1[269]|2[02369]|3[0389]|4[13467]|5[0-25-79]|6[037]|7[0-356]|8[057]|9[02-5])|3(?:0[03589]|1[2-69]|2[01357]|3[03569]|5[3-579]|79|8[35]|9[1278])|4(?:0[5-9]|1[3-59]|2[0-24-69]|3[015]|4[06-9]|5[1457]|6[0167]|7[1568]|8[016-8]|9[02378])|5(?:05|1[49]|2[0-2459]|3[237-9]|4[01]|5[06]|6[09]|7[0-2578]|8[0389]|9[89])|6(?:0[57]|1[356]|2[013479]|3[04]|4[19]|56|6[049]|7[013679]|8[02358]|9[015])|7(?:0[46]|1[478]|2[89]|3[49]|4[2689]|5[07-9]|6[0-2458]|71|8[34]|9[3578])|8(?:0[457-9]|1[03-9]|2[03]|3[056]|4[0-25-9]|5[09]|7[013-58]|81)|9(?:0[36]|1[03-5]|[24]0|3[58]|58|6[048]|7[45]|9[358]))\\d{4}$", "voip": "^\\+1540(?:2(?:0[238]|1[0357]|25|37|40|74|99)|3(?:04|28|40|56|8[68]|9[03])|4(?:0[014]|1[078]|37|4[3-5]|5[038]|7[09]|85|9[56])|5(?:0[89]|15|[38]4|[46]6|9[045])|6(?:0[06]|1[247-9]|28|3[28]|4[0267]|5[05]|[68]6|9[89])|7(?:0[1-358]|[24]4|3[02]|5[3-6]|7[079]|8[0-2]|9[0146])|8(?:0[06]|12|[24]4|61|76|8[039]|93)|9(?:0[0-2]|1[89]|[24]4|3[046]|5[67]|63|7[389]|88|90))\\d{4}$" }, "sandbox": { "input": "+15405550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+15405550123", "international": "+1 540-555-0123", "national": "(540) 555-0123", "rfc3966": "tel:+1-540-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "540", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 540?", "answer": "Area code 540 is in Virginia, in the United States: all 800 of its exchanges on record are there. From abroad it is dialled +1 540, then the seven-digit number." }, { "question": "Is a 540 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 800 exchanges on record in 540, 272 (34%) were allocated as mobile, 395 (49%) as fixed line, 120 (15%) as VoIP and 13 (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 540?", "answer": "41 carriers hold exchanges in 540 on record; the most: Verizon (283), T-Mobile (89) and AT&T (81). 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 540 phone number?", "answer": "In E.164 a 540 number matches ^\\+1540[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 (540) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP." } ], "neighbours": { "sameRegion": [ "us-276", "us-434", "us-571", "us-686", "us-703", "us-757", "us-804", "us-826", "us-948" ], "previous": "us-539", "next": "us-541" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 800, "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" } ] } }