{ "url": "https://phonelookup.dev/prefix/us-781", "npa": "781", "slug": "us-781", "iso": "US", "country": "United States", "regions": [ { "code": "MA", "name": "Massachusetts", "exchanges": 795 } ], "exchanges": 795, "known": 776, "byLineType": { "fixed_line": 547, "mobile": 135, "unknown": 19, "voip": 94 }, "carriers": [ { "name": "Verizon", "exchanges": 367, "byLineType": { "fixed_line": 325, "mobile": 42 }, "ranges": [ "203", "207", "213", "217", "219–224", "227", "229", "231–233", "235", "237–241", "245–246", "248", "250–251", "254–265", "268", "270–276", "278–280", "282–284", "286", "288–290", "292–297", "300–301", "303–307", "309–310", "313–314", "318–322", "324", "326", "329", "331", "334–335", "337–338", "340–342", "344–345", "347–348", "356–359", "368", "371–372", "376–377", "379–380", "382–383", "386", "388", "391–398", "401–403", "407", "409–410", "412–413", "416", "422", "424", "431", "433", "438", "440–442", "444–447", "449", "453–455", "457", "459–461", "466–468", "473–474", "477–478", "480–481", "483–488", "490", "494–496", "498", "501–503", "505–506", "509", "512", "515", "517", "522", "525", "529", "531", "533", "544–545", "551", "554", "561", "563–564", "567", "574–575", "581–582", "585–586", "592–593", "595–596", "598–599", "601", "615", "618", "622–624", "628", "631", "633–634", "636", "639", "641–643", "645–648", "650", "655", "657–659", "662–663", "665", "668", "670", "672", "674", "676–677", "681–682", "684", "687", "693", "697–699", "703", "709–710", "712", "716", "718–719", "721", "723", "729", "732–733", "735–736", "740–741", "743–744", "747", "749", "751", "755–756", "759", "762", "767–769", "771", "774", "778", "782", "784", "788–789", "792–794", "796", "799", "800", "803", "808", "814", "820–821", "823", "825–826", "828–830", "832–834", "837", "839", "843", "846", "848–849", "852–853", "855", "857", "860–863", "865", "871", "876–878", "890–895", "899", "900", "902", "904", "906–907", "909–910", "912", "915", "917", "919–920", "922", "925", "930–935", "937–939", "941–942", "944", "946", "948–949", "961", "963", "970", "972–973", "977", "979–982", "984", "986", "988", "993", "997–999" ] }, { "name": "T-Mobile", "exchanges": 75, "byLineType": { "mobile": 75 }, "ranges": [ "201", "204", "242–243", "252", "267", "291", "299", "308", "330", "351", "354", "363", "367", "385", "389", "405", "408", "414", "420", "469–470", "492", "500", "504", "510", "513", "520", "526", "540", "548", "552", "568", "570–571", "576", "579–580", "588–589", "591", "600", "603", "608", "632", "654", "691–692", "696", "704", "706", "720", "727", "760", "798", "805", "809", "813", "844", "858", "866", "883", "888–889", "901", "913", "921", "947", "953", "962", "964", "971", "975", "983", "985" ] }, { "name": "AT&T", "exchanges": 73, "byLineType": { "fixed_line": 58, "mobile": 15 }, "ranges": [ "202", "205–206", "216", "218", "225", "228", "249", "266", "285", "298", "302", "350", "364", "366", "370", "375", "406", "417", "423", "429–430", "434", "443", "451", "462", "464", "471–472", "482", "499", "527", "530", "534", "537", "556–557", "560", "565", "584", "594", "607", "612", "635", "638", "640", "653", "660", "678", "680", "685", "689–690", "707", "724", "738", "754", "763", "775", "817", "835", "847", "856", "864", "869–870", "918", "929", "943", "952", "956", "991", "994" ] }, { "name": "Paetec Itel", "exchanges": 69, "byLineType": { "fixed_line": 69 }, "ranges": [ "234", "236", "244", "247", "332–333", "346", "349", "352", "362", "404", "418–419", "425", "437", "439", "463", "465", "475", "489", "493", "514", "521", "528", "535", "541–542", "547", "569", "573", "602", "610", "616", "619", "644", "656", "664", "702", "715", "722", "726", "737", "746", "761", "783", "801", "804", "810", "815", "831", "838", "850", "859", "873", "879", "884", "886", "897", "903", "905", "914", "916", "927–928", "936", "957", "960", "966", "974" ] }, { "name": "Lumen", "exchanges": 59, "byLineType": { "fixed_line": 59 }, "ranges": [ "210", "214–215", "253", "277", "287", "312", "323", "325", "328", "336", "343", "353", "390", "399", "426", "476", "479", "497", "507", "518–519", "538", "549", "577", "583", "625–626", "651", "679", "683", "688", "694–695", "708", "713", "730", "734", "742", "752–753", "770", "780", "785–786", "791", "795", "818", "827", "836", "840", "854", "872", "881", "926", "968", "989", "995–996" ] }, { "name": "Comcast", "exchanges": 35, "byLineType": { "voip": 35 }, "ranges": [ "281", "365", "369", "373–374", "378", "400", "435", "523", "558", "562", "587", "605", "609", "620", "629", "675", "686", "701", "772–773", "777", "779", "790", "806–807", "812", "842", "874–875", "885", "923–924", "987", "990" ] }, { "name": "Bandwidth.com", "exchanges": 34, "byLineType": { "voip": 34 }, "ranges": [ "208", "226", "230", "317", "436", "456", "458", "516", "532", "536", "553", "597", "613–614", "649", "667", "669", "671", "673", "705", "748", "757–758", "764–766", "797", "819", "841", "845", "896", "908", "945", "958" ] }, { "name": "Astound Broadband", "exchanges": 26, "byLineType": { "fixed_line": 26 }, "ranges": [ "209", "269", "315–316", "361", "381", "428", "448", "491", "539", "546", "559", "572", "606", "621", "627", "630", "652", "717", "728", "731", "750", "776", "824", "867", "992" ] }, { "name": "Onvoy", "exchanges": 11, "byLineType": { "voip": 11 }, "ranges": [ "355", "427", "524", "590", "604", "661", "745", "787", "882", "887", "951" ] }, { "name": "Peerless Network", "exchanges": 8, "byLineType": { "voip": 8 }, "ranges": [ "327", "384", "452", "566", "666", "725", "739", "954" ] }, { "name": "Norfolk County Internet", "exchanges": 7, "byLineType": { "fixed_line": 7 }, "ranges": [ "360", "415", "432", "543", "578", "637", "965" ] }, { "name": "COMMIO LLC", "exchanges": 3, "byLineType": { "voip": 3 }, "ranges": [ "200", "868", "967" ] }, { "name": "American Messaging", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "387" ] }, { "name": "BayRing Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "816" ] }, { "name": "Emergency Networks", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "898" ] }, { "name": "Fractel", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "822" ] }, { "name": "IP Horizon", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "421" ] }, { "name": "Mass Mobile", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "781" ] }, { "name": "Tpx Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "851" ] }, { "name": "Ucom Paging", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "212" ] }, { "name": "Voip Street", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "978" ] } ], "grid": "vmffmfmfvffumffffffffffmffvmffvfffffffffffmmffffmmffmfmfffmfffffmmfmfffffffffffffvfffffffffmffffmffmffffffffmffufffffvfffffffffvffmffffffff-fffffffffffmffmvfffffffmfvmmfvfffvvfffvmffmfvmfmfmffffffffffvffmfmffmffuffmfffffmvffmffvfffffffvvffffffffmffff-fvfmfvfvfffffffffmmmfffmfffffffffmfffffmfmfffffffmfffmfff-fmufmffvfffmffvvmmffffmvfffvfffmfffffffmfufmvfuffvffmvmffvfmfmmffffmffmmffffffvmmvmfffffvffmffmvvffmvfufvvff-ffvffffffffvffmfffffffmffffffffvmfffmfffffmvffffvvfvfvfvfvffffffffffvffmmmmfffmfffuvfmmvmfffmuffufffmfmfffmvfmffffmmffffmvfffffvfmvffffffmfvvfmfffvvvffffmvvfmfvfvfffffffvfmvffffffvmmmfuffmvvmmfuvmfffffvmfvffmfffffffffffffffvvfmvfffffffffmmfmfffffmfmfvfffffvvfmffufvmfvfvmmffffffvfmffmffffffvfmufmfffffffmfvvffffmffffffffffuffffvfmffuvfmv-mfvuffmfmffvfufmfffmufvfmffmfmfvmfvmffffffff", "patterns": { "all": "^\\+1781[2-9]\\d{6}$", "fixed_line": "^\\+1781(?:2(?:0[23579]|1[03-9]|2[0-24589]|3[1-9]|4[014-7]|5[0135-79]|6[0-3689]|7\\d|8[02-9]|9[02-578])|3(?:0[0-79]|1[02-689]|2[0-689]|3[1-8]|[49]\\d|5[0236-9]|6[0-248]|7[0-25-7]|8[01368])|4(?:0[124679]|1[0235-9]|2[235689]|3[0-47-9]|4[0-46-9]|5[13579]|6[0-7]|7[1-35-9]|8[0-35-9]|9[13-9])|5(?:0[1-35-79]|1[2457-9]|2[127-9]|3[03-57-9]|4[1-79]|5[14679]|6[04579]|7[2-578]|8[1-6]|9[2-689])|6(?:0[1267]|1[025689]|[24][1-8]|3[013-9]|5[1-35-9]|6[2-58]|7[0246-9]|8[0-578]|9[3-57-9])|7(?:0[27-9]|1[235-79]|2[1-3689]|3[014-7]|[45][0-469]|6[1-37-9]|7[0468]|8[0-68]|9[1-6])|8(?:0[134]|1[04-8]|2[1346-9]|3\\d|4[036-9]|5[0-479]|6[0-3579]|7[0-3689]|8[146]|9[0-579])|9(?:0[02-79]|1[24-9]|2[025-8]|3\\d|4[1-4689]|5[27]|6[013568]|7[02-479]|8[12469]|9[2-9]))\\d{4}$", "mobile": "^\\+1781(?:2(?:0[146]|12|2[37]|4[2389]|5[248]|6[457]|9[169])|3(?:08|30|5[14]|6[367]|79|8[2579])|4(?:0[358]|[158]4|[27][04]|45|6[89]|9[02])|5(?:0[04]|1[03]|2[056]|[39]1|4[08]|52|6[138]|7[0169]|8[089])|6(?:0[038]|32|[46]0|5[04]|89|9[0-26])|7(?:0[346]|1[08]|2[047]|3[238]|47|55|60|7[15]|89|9[89])|8(?:0[0589]|13|2[05]|44|5[568]|6[46]|77|8[389]|98)|9(?:[09]1|1[03]|2[19]|47|5[36]|6[24]|7[15]|8[0358]))\\d{4}$", "voip": "^\\+1781(?:2(?:0[08]|26|30|81)|3(?:[12]7|55|6[59]|7[348]|84)|4(?:00|2[17]|3[56]|5[268])|5(?:16|2[34]|[36][26]|5[38]|87|9[07])|6(?:0[459]|1[34]|2[09]|49|6[1679]|7[135]|86)|7(?:0[15]|25|39|4[58]|5[78]|6[4-6]|7[2379]|87|9[07])|8(?:0[67]|1[29]|22|4[125]|68|7[45]|8[257]|96)|9(?:[07]8|2[34]|45|5[148]|[68]7|90))\\d{4}$" }, "sandbox": { "input": "+17815550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+17815550123", "international": "+1 781-555-0123", "national": "(781) 555-0123", "rfc3966": "tel:+1-781-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "781", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 781?", "answer": "Area code 781 is in Massachusetts, in the United States: all 795 of its exchanges on record are there. From abroad it is dialled +1 781, then the seven-digit number." }, { "question": "Is a 781 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 795 exchanges on record in 781, 135 (17%) were allocated as mobile, 547 (69%) as fixed line, 94 (12%) as VoIP and 19 (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 781?", "answer": "21 carriers hold exchanges in 781 on record; the most: Verizon (367), T-Mobile (75) and AT&T (73). 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 781 phone number?", "answer": "In E.164 a 781 number matches ^\\+1781[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 (781) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP." } ], "neighbours": { "sameRegion": [ "us-339", "us-351", "us-413", "us-508", "us-617", "us-774", "us-857", "us-978" ], "previous": "ca-780", "next": "ca-782" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 795, "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" } ] } }