{ "url": "https://phonelookup.dev/prefix/us-641", "npa": "641", "slug": "us-641", "iso": "US", "country": "United States", "regions": [ { "code": "IA", "name": "Iowa", "exchanges": 605 } ], "exchanges": 605, "known": 584, "byLineType": { "fixed_line": 354, "mobile": 178, "unknown": 21, "voip": 52 }, "carriers": [ { "name": "Windstream", "exchanges": 123, "byLineType": { "fixed_line": 123 }, "ranges": [ "212", "217", "223", "236", "259", "269", "278", "307", "327", "335–337", "339", "342–343", "346–348", "363–364", "369", "385", "393–394", "397", "427", "429", "432–433", "437", "449", "452", "464", "466", "469–470", "472–473", "479", "484", "489", "492", "499", "501", "528", "534–535", "557", "582", "595", "599", "620–628", "634–637", "647", "649", "652–653", "655–656", "658–659", "661", "667", "693", "724", "726", "728", "734", "736–737", "742–745", "747", "764", "766–768", "772", "774", "782–783", "785", "787", "791–792", "819", "823", "828", "841–842", "856", "862", "869", "874", "877", "898", "932–938", "942–944", "946–947", "949", "969" ] }, { "name": "Verizon", "exchanges": 47, "byLineType": { "fixed_line": 1, "mobile": 46 }, "ranges": [ "208", "214", "219–220", "229", "231", "260", "304", "381", "387", "390", "413", "418", "420", "426", "436", "451", "481", "516", "525", "529–530", "541", "580", "590", "596", "629", "638", "640", "651", "670", "680", "740", "750", "757", "790", "820", "840", "849", "860", "863", "871", "881", "888", "931", "954", "980" ] }, { "name": "UScellular", "exchanges": 39, "byLineType": { "mobile": 39 }, "ranges": [ "202–203", "216", "218", "221", "247", "289", "295", "325", "330", "344", "373", "414", "425", "430–431", "485", "512", "521", "572", "660", "706", "718", "729", "751", "770", "777", "780", "799", "801", "818", "880", "891", "895", "901–902", "919", "990", "997" ] }, { "name": "Lumen", "exchanges": 38, "byLineType": { "fixed_line": 37, "voip": 1 }, "ranges": [ "228", "243", "250", "254", "257", "306", "321", "324", "380", "421–424", "428", "435", "454", "456", "458", "494", "508", "632", "648", "672–673", "682–684", "732", "752–754", "843–844", "847", "854", "905", "923–924" ] }, { "name": "T-Mobile", "exchanges": 33, "byLineType": { "fixed_line": 2, "mobile": 31 }, "ranges": [ "201", "204", "210", "233", "251", "255", "261", "318", "328", "351", "354–355", "357", "384", "408", "416–417", "455", "504", "510", "517", "548", "630", "657", "674", "781", "808", "821", "831", "861", "903", "909", "991" ] }, { "name": "AT&T", "exchanges": 29, "byLineType": { "fixed_line": 1, "mobile": 28 }, "ranges": [ "206", "226", "230", "232", "239–241", "244–246", "248–249", "252–253", "256", "274–275", "277", "282", "288", "382", "506", "514", "531", "569", "583", "691", "719", "916" ] }, { "name": "Emergency Networks", "exchanges": 29, "byLineType": { "mobile": 29 }, "ranges": [ "265", "267", "270–271", "273", "276", "279–280", "283–287", "291–292", "294", "296", "299", "301", "368", "402", "518", "589", "601", "639", "643", "690", "714", "760" ] }, { "name": "Omni Tel Communications", "exchanges": 27, "byLineType": { "fixed_line": 27 }, "ranges": [ "213", "235", "237", "262", "264", "308–309", "388", "410", "453", "509", "551", "570", "608", "612", "665", "696", "739", "795", "826–827", "865", "962", "982–983", "985", "992" ] }, { "name": "Frontier", "exchanges": 22, "byLineType": { "fixed_line": 22 }, "ranges": [ "298", "322", "326", "329", "333", "349", "358", "444", "459", "495", "579", "586", "664", "675", "692", "722", "853", "866", "892", "929", "995", "998" ] }, { "name": "Onvoy", "exchanges": 22, "byLineType": { "voip": 22 }, "ranges": [ "238", "310", "316", "334", "341", "400–401", "406", "448", "503", "513", "560", "609", "614", "646", "666", "671", "681", "715", "717", "800", "999" ] }, { "name": "Winnebago Cooperative Telecom Association", "exchanges": 20, "byLineType": { "fixed_line": 20 }, "ranges": [ "293", "323", "561–562", "565–568", "581", "584–585", "588", "591–592", "748", "797", "845", "896", "926–927" ] }, { "name": "MCC Telephony", "exchanges": 17, "byLineType": { "fixed_line": 17 }, "ranges": [ "242", "303", "305", "353", "362", "372", "440", "457", "519", "523", "705", "735", "812", "834", "846", "887", "921" ] }, { "name": "Heart of Iowa Communications Cooperative", "exchanges": 14, "byLineType": { "fixed_line": 14 }, "ranges": [ "366", "474–476", "478", "486", "488", "496–497", "858", "868", "920", "922", "939" ] }, { "name": "Grand River Mutual Telephone Corporation", "exchanges": 12, "byLineType": { "fixed_line": 12 }, "ranges": [ "338", "442–443", "445–446", "533", "773", "784", "788", "873", "876", "897" ] }, { "name": "Fractel", "exchanges": 9, "byLineType": { "voip": 9 }, "ranges": [ "222", "300", "356", "600", "677", "688", "900", "955", "977" ] }, { "name": "Ton80 Communications", "exchanges": 9, "byLineType": { "voip": 9 }, "ranges": [ "258", "266", "272", "543", "668", "727", "776", "837", "966" ] }, { "name": "Partner Communications Cooperative", "exchanges": 8, "byLineType": { "fixed_line": 8 }, "ranges": [ "227", "482–483", "493", "498", "502", "507", "526" ] }, { "name": "LTDS Corporation", "exchanges": 7, "byLineType": { "fixed_line": 7 }, "ranges": [ "205", "207", "209", "224–225", "613", "814" ] }, { "name": "Omnitel Communications", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "315", "552", "631", "710", "713", "816" ] }, { "name": "ALLIANCE CONNECT", "exchanges": 5, "byLineType": { "fixed_line": 5 }, "ranges": [ "263", "268", "403", "407", "654" ] }, { "name": "Farmers Mutual Telephone Company", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "395", "398", "749", "756" ] }, { "name": "Rockwell Cooperative Telephone Association", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "775", "794", "822", "894" ] }, { "name": "Bandwidth.com", "exchanges": 3, "byLineType": { "voip": 3 }, "ranges": [ "200", "505", "575" ] }, { "name": "Communications 1 Network", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "587", "762", "925" ] }, { "name": "GREENWAY COMMUNICATIONS", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "317", "441", "465" ] }, { "name": "IP Horizon", "exchanges": 3, "byLineType": { "voip": 3 }, "ranges": [ "802", "810", "825" ] }, { "name": "Interstate 35 Telephone Company", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "297", "396", "765" ] }, { "name": "Lyrix Wireless", "exchanges": 3, "byLineType": { "mobile": 3 }, "ranges": [ "234", "340", "870" ] }, { "name": "Panora Cooperative Telephone Association", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "332", "439", "755" ] }, { "name": "South Central Communications", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "447", "763", "872" ] }, { "name": "Coon Valley Cooperative Telephone Association", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "345", "524" ] }, { "name": "Dish Wireless", "exchanges": 2, "byLineType": { "mobile": 2 }, "ranges": [ "290", "302" ] }, { "name": "Killduff Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "741", "798" ] }, { "name": "Minerva Valley Telephone", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "477", "487" ] }, { "name": "Reasnor Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "793", "796" ] }, { "name": "Searsboro Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "593", "678" ] }, { "name": "Access2Go", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "281" ] }, { "name": "Barnes City Cooperative Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "644" ] }, { "name": "Blue Earth Valley Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "948" ] }, { "name": "Brooklyn Mutual Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "522" ] }, { "name": "COMMIO LLC", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "359" ] }, { "name": "Casey Mutual Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "746" ] }, { "name": "Colo Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "377" ] }, { "name": "Dumont Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "857" ] }, { "name": "Farmers Mutual Cooperative Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "642" ] }, { "name": "Farmers' Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "662" ] }, { "name": "HD Carrier", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "461" ] }, { "name": "Heart of Iowa Ventures", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "758" ] }, { "name": "Hubbard Cooperative Telephone Association", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "864" ] }, { "name": "ImOn Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "619" ] }, { "name": "Lenox Municipal Utilities - Iowa Comm", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "536" ] }, { "name": "Lynnville Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "527" ] }, { "name": "Mahaska Communication Group", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "676" ] }, { "name": "Northland Communications", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "450" ] }, { "name": "Osage Municipal Telecommunications Utility", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "832" ] }, { "name": "Paetec Itel", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "352" ] }, { "name": "Sully Telephone Association", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "594" ] }, { "name": "TELNYX", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "215" ] }, { "name": "Ventura Telephone Company", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "829" ] }, { "name": "Vonage", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "500" ] } ], "grid": "vmmmmfmfmfmuffmvmfmmmmvfffmffmmmmmmfffvmmmffmmmmmmfmmmfmmfvfmmfffmvmffmmvmmmmmfmmvmmmmmmmmmmmfmmmffmvmmfmfffffvuu--fvfmu-vfffmffmfm-ffvfffffmvffmfffff-mffmfvffv--fff-f-mf--fm---f--fmm-mf-ff-m--ffffff-vvmf--vfm-fu-mm-mmm-mffffmmfffmmff-fmf-fffffffffvffmfffmffff-v--fff--ff-ffffffff-mfffmffff--ffffffffvffvmvmfffmumvmummmf-mfffmfffmmf-ffff----m-v----m--ff--u-f--vffu-ffffmf-m--v---fmffmfffffmmfffffm--fvm------fv-uffv----ffffffffffmmff-ffffmmmufmf-vfff-mfffffmffmff-ffvfv-mvffmffvf-mvfff---v-mmff--f---u----fm---fuufmv-vmm--f-f-fvfm--f-ffff-fmfffffffffmmfffffmf-m-fffffff-m-ffffvm--mmffff-ff-mffffffffmvmv-----m-vuf-f-f-mfmmff-vffff-mf-f--v--mfffffff-m---ff-fff-mmfmfff-ffmmfff-ff--mm-----fm--mf-fmfff-vmmm-f---m-u----m--mffffffff-f-mffffffff--fff-ffffu---mv--uu--f---v--f------uv--m-ff-f--u-mmf--f-mfv", "patterns": { "all": "^\\+1641[2-9]\\d{6}$", "fixed_line": "^\\+1641(?:2(?:0[579]|1[237]|2[3-578]|3[5-7]|4[23]|5[0479]|6[2-489]|78|9[378])|3(?:0[35-9]|1[57]|2[2-4679]|[34][235-9]|5[23578]|6[2-469]|7[27]|8[0578]|9[3-8])|4(?:0[37]|10|2[1-47-9]|3[23579]|4[0-79]|5[02-46-9]|6[4-69]|7[02-9]|8[2-46-9]|9[2-9])|5(?:0[127-9]|19|2[2-46-8]|3[13-6]|5[127]|6[125-8]|7[09]|8[124-8]|9[1-59])|6(?:08|1[239]|2[0-8]|3[124-7]|4[247-9]|5[2-689]|6[12457]|7[23568]|8[2-4]|9[236])|7(?:05|1[03]|2[2468]|3[24-79]|4[1-9]|5[2-68]|6[2-8]|7[2-5]|8[2-578]|9[1-8])|8(?:1[2469]|2[236-9]|3[24]|4[1-7]|5[346-8]|6[24-689]|7[2-467]|87|9[246-8])|9(?:05|2[0-79]|3[2-9]|4[2-46-9]|6[29]|8[235]|9[258]))\\d{4}$", "mobile": "^\\+1641(?:2(?:0[1-468]|1[04689]|2[0169]|3[0-49]|4[014-9]|5[1-356]|6[0157]|7[013-79]|8[02-9]|9[0-24-69])|3(?:[08][124]|[16]8|2[58]|[39]0|4[04]|5[14]|73)|4(?:0[28]|1[346-8]|2[056]|3[016]|[58][15])|5(?:0[46]|1[0246-8]|2[159]|30|4[18]|69|72|8[039]|9[06])|6(?:01|29|3[089]|4[03]|5[17]|[68]0|7[04]|9[01])|7(?:06|1[489]|29|[46]0|5[017]|7[07]|8[01]|9[09])|8(?:0[18]|18|[27][01]|31|4[09]|6[013]|8[018]|9[15])|9(?:0[1-39]|1[69]|31|54|80|9[017]))\\d{4}$", "voip": "^\\+1641(?:2(?:00|15|[27]2|[35]8|66|81)|3(?:00|1[06]|[24]1|34|5[69])|4(?:0[016]|48|61)|5(?:0[035]|[14]3|60|75)|6(?:0[09]|14|46|6[68]|7[17]|8[18])|7(?:1[57]|27|76)|8(?:0[02]|10|25|37)|9(?:00|55|66|77|99))\\d{4}$" }, "sandbox": { "input": "+16415550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+16415550123", "international": "+1 641-555-0123", "national": "(641) 555-0123", "rfc3966": "tel:+1-641-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "641", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 641?", "answer": "Area code 641 is in Iowa, in the United States: all 605 of its exchanges on record are there. From abroad it is dialled +1 641, then the seven-digit number." }, { "question": "Is a 641 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 605 exchanges on record in 641, 178 (29%) were allocated as mobile, 354 (59%) as fixed line, 52 (9%) as VoIP and 21 (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 641?", "answer": "60 carriers hold exchanges in 641 on record; the most: Windstream (123), Verizon (47) and UScellular (39). 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 641 phone number?", "answer": "In E.164 a 641 number matches ^\\+1641[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 (641) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP." } ], "neighbours": { "sameRegion": [ "us-319", "us-515", "us-563", "us-712" ], "previous": "us-640", "next": "us-645" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 605, "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" } ] } }