{ "url": "https://phonelookup.dev/prefix/us-508", "npa": "508", "slug": "us-508", "iso": "US", "country": "United States", "regions": [ { "code": "MA", "name": "Massachusetts", "exchanges": 800 } ], "exchanges": 800, "known": 757, "byLineType": { "fixed_line": 561, "mobile": 153, "unknown": 43, "voip": 43 }, "carriers": [ { "name": "Verizon", "exchanges": 405, "byLineType": { "fixed_line": 361, "mobile": 44 }, "ranges": [ "200", "206–209", "220–224", "226", "228–231", "233–238", "240", "242–243", "245", "247–249", "252–257", "259", "261", "263", "266–267", "269–274", "277–279", "285–286", "288–289", "291", "295", "299", "300", "302–303", "310", "312", "318", "320", "323–325", "330", "334", "336–337", "339", "341", "347", "349–351", "354–355", "357–359", "362–363", "366", "368", "370", "374–376", "378–380", "383–385", "387", "389–391", "393–394", "396–399", "401", "408", "417", "420–422", "424", "427–432", "435", "437", "445", "448", "450", "457–458", "460", "462–464", "473", "475–487", "489–491", "495", "497", "502", "505", "519–520", "522–523", "526", "528–530", "533", "539–541", "543–544", "546", "548–549", "551", "553–554", "559", "561", "563–565", "569", "573", "580–581", "583–584", "586–590", "592", "595", "597–599", "612", "616", "618", "620", "624", "626–629", "632", "634", "636–637", "641", "643–647", "650–653", "655", "660–661", "663–664", "668–669", "671–680", "690–691", "693", "695–699", "713", "718", "721", "723–724", "728–730", "732", "735", "737", "739", "743", "745–748", "751–761", "763–767", "769–771", "774–776", "778", "780–781", "785–793", "795–799", "800", "803", "810", "814", "817", "820–825", "828–833", "835–836", "839", "841–842", "845", "849–856", "860–862", "864–872", "875–877", "879–888", "890–898", "900", "906", "910", "920", "923", "929–931", "935", "939", "941–947", "949", "951", "953–954", "956–957", "961", "965–966", "968", "972–973", "977", "979", "983–985", "987–988", "990–999" ] }, { "name": "AT&T", "exchanges": 103, "byLineType": { "fixed_line": 40, "mobile": 63 }, "ranges": [ "212–213", "215–217", "225", "239", "241", "244", "246", "264–265", "280", "284", "293", "305", "308–309", "314", "317", "322", "331", "335", "343–344", "346", "353", "361", "364", "367", "382", "395", "404", "409", "414–416", "423", "446", "451", "467–468", "493–494", "498", "501", "513", "517–518", "524", "527", "542", "560", "566", "571–572", "574", "577", "591", "594", "596", "600", "614", "617", "621", "631", "633", "642", "648–649", "654", "662", "667", "688–689", "733", "736", "744", "762", "782–783", "804", "808", "813", "826–827", "838", "843–844", "846–847", "873", "878", "903", "918", "925–927", "932", "948", "952", "971", "981" ] }, { "name": "Paetec Itel", "exchanges": 67, "byLineType": { "fixed_line": 67 }, "ranges": [ "205", "258", "281", "296", "298", "319", "342", "356", "372–373", "402", "407", "418", "436", "438", "452–453", "459", "469", "471", "474", "488", "499", "506", "514", "521", "531–532", "535", "538", "552", "568", "623", "638–640", "656", "659", "665", "683–684", "717", "719–720", "742", "749", "768", "772", "784", "802", "809", "818–819", "837", "848", "901–902", "907", "909", "917", "919", "924", "937", "967", "970", "980", "986" ] }, { "name": "Lumen", "exchanges": 60, "byLineType": { "fixed_line": 60 }, "ranges": [ "202–203", "210", "214", "219", "275", "283", "306", "313", "329", "332", "338", "340", "365", "371", "377", "403", "406", "413", "419", "434", "443–444", "449", "500", "503", "507", "534", "536", "556", "558", "562", "570", "576", "593", "603", "613", "619", "630", "635", "682", "686", "692", "709", "714–715", "734", "738", "812", "858–859", "915–916", "921", "934", "936", "938", "960", "969", "975" ] }, { "name": "T-Mobile", "exchanges": 40, "byLineType": { "mobile": 40 }, "ranges": [ "232", "250", "260", "287", "292", "294", "304", "326", "328", "333", "345", "360", "369", "400", "410", "441", "454", "472", "496", "509", "579", "615", "685", "725–726", "740", "801", "816", "840", "863", "889", "904", "922", "933", "958", "962–963", "974", "982", "989" ] }, { "name": "Comcast", "exchanges": 21, "byLineType": { "voip": 21 }, "ranges": [ "251", "276", "297", "316", "321", "348", "381", "386", "455–456", "465", "545", "557", "567", "622", "625", "657", "794", "807", "857", "928" ] }, { "name": "Norfolk County Internet", "exchanges": 18, "byLineType": { "fixed_line": 18 }, "ranges": [ "218", "268", "352", "412", "442", "447", "547", "582", "585", "666", "670", "716", "741", "750", "773", "777", "805", "874" ] }, { "name": "Bandwidth.com", "exchanges": 12, "byLineType": { "voip": 12 }, "ranges": [ "290", "301", "426", "470", "492", "578", "722", "727", "834", "899", "955", "964" ] }, { "name": "Astound Broadband", "exchanges": 11, "byLineType": { "fixed_line": 11 }, "ranges": [ "282", "315", "392", "405", "425", "439–440", "461", "510", "525", "815" ] }, { "name": "Onvoy", "exchanges": 9, "byLineType": { "voip": 9 }, "ranges": [ "388", "433", "466", "504", "658", "687", "694", "905", "978" ] }, { "name": "American Messaging", "exchanges": 4, "byLineType": { "mobile": 4 }, "ranges": [ "307", "327", "537", "806" ] }, { "name": "Spectrum", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "731", "779" ] }, { "name": "BayRing Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "681" ] }, { "name": "COMMIO LLC", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "204" ] }, { "name": "Emergency Networks", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "262" ] }, { "name": "Mass Mobile", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "508" ] }, { "name": "Ucom Paging", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "575" ] } ], "grid": "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", "patterns": { "all": "^\\+1508[2-9]\\d{6}$", "fixed_line": "^\\+1508(?:2(?:0[023569]|1[03-9]|2[02-4689]|3[013-68]|4[0247-9]|5[235-8]|6[136-8]|7[013589]|8[1-35689]|9[135689])|3(?:0[023569]|1[023589]|2[3-59]|3[246-9]|4[023679]|5[0-24-9]|6[23568]|7\\d|8[2-579]|9[0-4689])|4(?:0[1-8]|1[236-9]|2[0-2457-9]|3[0-24-9]|4[02-57-9]|5[237-9]|6[0-47-9]|7[13-8]|8\\d|9[01579])|5(?:0[0-35-8]|1[03489]|2[0-25689]|3[0-689]|4[01346-9]|5[1-4689]|6[2-589]|7[0136]|8\\d|9[0-57-9])|6(?:03|1[34689]|2[01346-9]|3[024-9]|4[03-7]|5[0-3569]|6[013-689]|7\\d|8[1-4689]|9[0-35-9])|7(?:09|1[3-9]|2[0139]|3[0-2489]|4[1-46-9]|5\\d|6[0-8]|7[0-357-9]|8[024-8]|9[0-35-9])|8(?:0[02-589]|1[024589]|2[0-57-9]|3[0-35-9]|4[124589]|5[0-689]|6[0-25-79]|7[0-24-79]|[89][0-8])|9(?:0[0-3679]|1[05-9]|2[013-79]|3[14-9]|4[135-9]|5[2367]|6[016-9]|7[03579]|8[03-8]|9\\d))\\d{4}$", "mobile": "^\\+1508(?:2(?:0[78]|12|2[15]|3[279]|4[1356]|5[049]|6[02459]|7[247]|8[047]|9[24])|3(?:0[478]|1[47]|2[026-8]|3[0135]|4[145]|53|6[01479]|80|9[57])|4(?:0[09]|1[045]|23|4[16]|5[014]|7[29]|9[3468])|5(?:09|[13]7|2[347]|42|6[016]|7[24579]|96)|6(?:00|1[257]|3[13]|4[1289]|54|6[27]|8[05])|7(?:2[4-68]|3[35-7]|4[05]|69|7[46]|8[139])|8(?:0[16]|1[367]|26|4[0367]|6[348]|7[38]|89)|9(?:04|22|3[023]|4[24]|5[148]|6[235]|7[124]|8[129]))\\d{4}$", "voip": "^\\+1508(?:2(?:04|51|76|9[07])|3(?:[02]1|16|48|8[168])|4(?:26|33|[56][56]|70|92)|5(?:04|45|[56]7|78)|6(?:2[25]|5[78]|87|94)|7(?:2[27]|94)|8(?:[05]7|34|99)|9(?:[05]5|[27]8|64))\\d{4}$" }, "sandbox": { "input": "+15085550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+15085550123", "international": "+1 508-555-0123", "national": "(508) 555-0123", "rfc3966": "tel:+1-508-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "508", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 508?", "answer": "Area code 508 is in Massachusetts, in the United States: all 800 of its exchanges on record are there. From abroad it is dialled +1 508, then the seven-digit number." }, { "question": "Is a 508 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 508, 153 (19%) were allocated as mobile, 561 (70%) as fixed line, 43 (5%) as VoIP and 43 (5%) 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 508?", "answer": "17 carriers hold exchanges in 508 on record; the most: Verizon (405), AT&T (103) and Paetec Itel (67). 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 508 phone number?", "answer": "In E.164 a 508 number matches ^\\+1508[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 (508) 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-617", "us-774", "us-781", "us-857", "us-978" ], "previous": "us-507", "next": "us-509" }, "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" } ] } }