{ "url": "https://phonelookup.dev/prefix/us-681", "npa": "681", "slug": "us-681", "iso": "US", "country": "United States", "regions": [ { "code": "WV", "name": "West Virginia", "exchanges": 514 } ], "exchanges": 514, "known": 500, "byLineType": { "fixed_line": 112, "mobile": 192, "unknown": 14, "voip": 196 }, "carriers": [ { "name": "AT&T", "exchanges": 102, "byLineType": { "fixed_line": 10, "mobile": 92 }, "ranges": [ "205", "212", "219", "232", "237", "249", "271", "278–279", "285–287", "294", "302", "306–307", "313", "326", "341", "360–362", "368", "373", "390–393", "396–397", "404", "406–407", "413", "417", "430", "438", "456", "464", "468", "471–473", "479–480", "494", "498", "504", "507", "519–521", "523", "527–528", "535–538", "541–542", "545–546", "549", "551–554", "556", "559–565", "571–574", "576–577", "582–584", "586", "591–594", "597–599", "601–603", "662", "668", "753", "945", "993–994" ] }, { "name": "Onvoy", "exchanges": 83, "byLineType": { "voip": 83 }, "ranges": [ "202", "210", "223", "240", "246", "248", "257", "259", "263", "270", "272", "275", "277", "281", "290", "293", "301", "308", "325", "345", "359", "366", "371", "384", "395", "402–403", "405", "414", "419", "444–445", "481–483", "485–487", "491", "509", "512–513", "531", "540", "550", "581", "585", "589", "595", "600", "610", "618–619", "641", "655", "660–661", "671", "676–677", "680–681", "683", "685", "691", "695", "699", "717", "722", "771", "776", "800–801", "816", "821–822", "839", "861", "881", "887", "900", "910", "949" ] }, { "name": "T-Mobile", "exchanges": 55, "byLineType": { "mobile": 55 }, "ranges": [ "203–204", "207", "229", "234", "242", "245", "250", "253", "261", "266–268", "283", "296–297", "305", "314", "328", "330", "353", "363", "369", "379", "381", "385", "387", "389", "398", "410", "424", "427–428", "432", "454", "460–461", "489", "505", "508", "517–518", "522", "524", "526", "534", "543", "588", "590", "621", "689", "755", "775", "844", "981" ] }, { "name": "Bandwidth.com", "exchanges": 38, "byLineType": { "voip": 38 }, "ranges": [ "214", "231", "256", "274", "276", "295", "299", "303", "309", "339", "354", "356–357", "364", "370", "372", "383", "386", "394", "409", "412", "415", "418", "420", "423", "425", "431", "436", "440–441", "451", "453", "469", "495", "533", "580", "667", "779" ] }, { "name": "CoreTel", "exchanges": 22, "byLineType": { "fixed_line": 22 }, "ranges": [ "206", "216", "222", "224", "230", "288", "312", "319–320", "334", "351–352", "375", "408", "442", "448", "532", "642", "797", "823", "875", "888" ] }, { "name": "Optimum", "exchanges": 22, "byLineType": { "fixed_line": 22 }, "ranges": [ "217", "221", "233", "236", "262", "265", "282", "291", "298", "318", "400", "416", "422", "459", "477", "515", "525", "539", "612", "675", "731", "735" ] }, { "name": "Fractel", "exchanges": 20, "byLineType": { "voip": 20 }, "ranges": [ "226", "316", "333", "336", "346", "348", "465", "500", "516", "529", "666", "687–688", "716", "732", "777", "899", "916", "946", "966" ] }, { "name": "Verizon", "exchanges": 19, "byLineType": { "fixed_line": 4, "mobile": 15 }, "ranges": [ "208–209", "220", "235", "238", "241", "255", "258", "289", "332", "358", "426", "443", "452", "457", "462", "514", "548", "575" ] }, { "name": "Emergency Networks", "exchanges": 16, "byLineType": { "mobile": 16 }, "ranges": [ "335", "388", "401", "466", "488", "510", "547", "644", "684", "686", "710", "770", "782", "788", "810", "871" ] }, { "name": "Lumen", "exchanges": 15, "byLineType": { "fixed_line": 10, "voip": 5 }, "ranges": [ "227", "243–244", "269", "337", "347", "377", "449–450", "470", "484", "493", "578", "587", "628" ] }, { "name": "Shentel", "exchanges": 15, "byLineType": { "fixed_line": 15 }, "ranges": [ "201", "213", "225", "239", "247", "251", "329", "355", "365", "380", "434", "499", "530", "729", "892" ] }, { "name": "COMMIO LLC", "exchanges": 13, "byLineType": { "voip": 13 }, "ranges": [ "367", "458", "475", "490", "492", "496–497", "501–503", "506", "867", "990" ] }, { "name": "Frontier", "exchanges": 7, "byLineType": { "fixed_line": 7 }, "ranges": [ "260", "323", "340", "342", "344", "622", "842" ] }, { "name": "Comcast", "exchanges": 6, "byLineType": { "voip": 6 }, "ranges": [ "252", "284", "343", "378", "437", "446" ] }, { "name": "UScellular", "exchanges": 6, "byLineType": { "mobile": 6 }, "ranges": [ "566–570", "620" ] }, { "name": "Skyetel", "exchanges": 5, "byLineType": { "voip": 5 }, "ranges": [ "544", "733", "833", "877", "880" ] }, { "name": "TELNYX", "exchanges": 5, "byLineType": { "voip": 5 }, "ranges": [ "280", "310", "374", "376", "433" ] }, { "name": "Dish Wireless", "exchanges": 4, "byLineType": { "mobile": 4 }, "ranges": [ "304", "474", "476", "478" ] }, { "name": "HD Carrier", "exchanges": 4, "byLineType": { "voip": 4 }, "ranges": [ "324", "349–350", "799" ] }, { "name": "Nuso", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "382", "463", "467", "690" ] }, { "name": "Vonage", "exchanges": 4, "byLineType": { "voip": 4 }, "ranges": [ "254", "300", "322", "455" ] }, { "name": "CSC Wireless LLC", "exchanges": 3, "byLineType": { "mobile": 3 }, "ranges": [ "264", "292", "439" ] }, { "name": "IDT America", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "228", "399", "435" ] }, { "name": "IP Horizon", "exchanges": 3, "byLineType": { "voip": 3 }, "ranges": [ "317", "331", "338" ] }, { "name": "Opentact", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "693", "738", "766" ] }, { "name": "Wavenation", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "579", "596", "640" ] }, { "name": "Armstrong Telecommunications", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "421", "447" ] }, { "name": "Peerless Network", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "429", "557" ] }, { "name": "Terra Nova Telecom", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "786", "999" ] }, { "name": "Twilio International", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "895–896" ] }, { "name": "Wide Voice", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "682", "781" ] }, { "name": "Appalachian Wireless", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "558" ] }, { "name": "Brightlink Communications", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "327" ] }, { "name": "CAS Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "200" ] }, { "name": "Digital Connections", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "315" ] }, { "name": "Exiant", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "273" ] }, { "name": "FiberNet", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "321" ] }, { "name": "Lumos Network", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "218" ] }, { "name": "Spectrum", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "758" ] }, { "name": "Ton80 Communications", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "837" ] }, { "name": "YMax Communications", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "215" ] } ], "grid": "ffvmmmfmmmvumfvvfffmmffvffvffmfvffmmffmfvfmfvmvfvmmfvmvfvvmvfmfvmfmmmvvfvvvvvvmmvvfmvmmmffvfmvmvmmfvvvmvmmmmvvvufmmfvvffffvfvvmvmfmvmvfmvfvvfmfvfvvfvvvffmvfvvmvmmmmvfvvmmvvvmvfvvvmfmfvvmvmmmfmmmvvmfmffmvvmvmmfvmuvmvvfmvvvffvmvmmmvmvmvffvvmmvvfmvvvffffvmvmvfmvfmmmfmvmfmvfmmmmvmfmmmvvvfvvvmmvvvfmvvvmfvvvvfmvmmvmuvvmfvmmmmmmmmfmmmvfvfvmmmmmfvmmmvfmmfmvmmmmumvmmmmmmmmmmmmmmmmmmmmvfvvmmmvmvmvmmmmmvfmmmvmmm------vuf-----vvmmf-----f-----------fvf-m----------v----vvf---vvm--v---fvv--vvfvmvmvvmfv-f-v---vu---------mu----vv----v------f-fvv-f--f--------------m-m--f-------f---mv---mvv-v-fm---v-m--------f-vvv--------mu----v----vvf---------v---v-v--f-m----------------v-----v---m---f-v--vv-----vf---f--vv--vv---------vu----v----------------------------fv--vu-------uu------v---------u----m--------v--mm----v", "patterns": { "all": "^\\+1681[2-9]\\d{6}$", "fixed_line": "^\\+1681(?:2(?:0[016]|1[36-8]|2[124578]|3[023679]|4[137]|5[15]|6[025]|71|8[289]|9[18])|3(?:1[2589]|2[0139]|3[47]|4[0247]|5[125]|[67]5|8[02]|9[079])|4(?:0[08]|16|2[12]|3[45]|4[27-9]|5[069]|6[37]|7[07]|84|9[39])|5(?:04|[12]5|3[029]|4[58]|79|96)|6(?:[168]2|2[28]|4[02]|75|9[03])|7(?:29|3[158]|58|66|81|97)|8(?:23|[49]2|75|88)|945)\\d{4}$", "mobile": "^\\+1681(?:2(?:0[3-57-9]|1[29]|2[09]|3[458]|4[259]|5[038]|6[146-8]|7[89]|8[35-7]|9[2467])|3(?:0[24-7]|1[34]|2[68]|3[025]|41|5[38]|6[0-389]|7[39]|8[157-9]|9[1-368])|4(?:0[1467]|1[037]|2[46-8]|3[0289]|43|5[247]|6[0-2468]|7[1-4689]|8[089]|9[48])|5(?:0[578]|1[047-9]|2[0-46-8]|3[4-8]|4[1-3679]|5[1-4689]|6\\d|7[0-7]|8[2-468]|9[0-47-9])|6(?:0[1-3]|2[01]|44|68|8[469])|7(?:10|5[35]|7[05]|8[28])|8(?:10|44|71)|9(?:81|9[34]))\\d{4}$", "voip": "^\\+1681(?:2(?:02|1[045]|2[36]|31|4[0468]|5[24679]|6[39]|7[02-7]|8[014]|9[0359])|3(?:0[01389]|1[067]|2[2457]|3[13689]|4[35689]|5[04679]|6[467]|7[0-246-8]|8[346]|9[45])|4(?:0[2359]|1[24589]|2[0359]|3[1367]|4[014-6]|5[1358]|6[59]|75|8[1-35-7]|9[0-25-7])|5(?:0[0-369]|1[236]|29|3[13]|4[04]|5[07]|78|8[01579]|95)|6(?:00|1[089]|41|55|6[0167]|7[167]|8[013578]|9[159])|7(?:1[67]|22|3[23]|7[1679]|86|99)|8(?:0[01]|16|2[12]|3[379]|6[17]|77|8[017]|9[569])|9(?:00|1[06]|4[69]|66|9[09]))\\d{4}$" }, "sandbox": { "input": "+16815550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+16815550123", "international": "+1 681-555-0123", "national": "(681) 555-0123", "rfc3966": "tel:+1-681-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "681", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 681?", "answer": "Area code 681 is in West Virginia, in the United States: all 514 of its exchanges on record are there. From abroad it is dialled +1 681, then the seven-digit number." }, { "question": "Is a 681 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 514 exchanges on record in 681, 192 (37%) were allocated as mobile, 112 (22%) as fixed line, 196 (38%) as VoIP and 14 (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 681?", "answer": "41 carriers hold exchanges in 681 on record; the most: AT&T (102), Onvoy (83) and T-Mobile (55). 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 681 phone number?", "answer": "In E.164 a 681 number matches ^\\+1681[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 (681) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP." } ], "neighbours": { "sameRegion": [ "us-304" ], "previous": "us-680", "next": "us-682" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 514, "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" } ] } }