{ "url": "https://phonelookup.dev/prefix/us-870", "npa": "870", "slug": "us-870", "iso": "US", "country": "United States", "regions": [ { "code": "AR", "name": "Arkansas", "exchanges": 800 } ], "exchanges": 800, "known": 785, "byLineType": { "fixed_line": 495, "mobile": 236, "unknown": 15, "voip": 54 }, "carriers": [ { "name": "AT&T", "exchanges": 275, "byLineType": { "fixed_line": 162, "mobile": 107, "voip": 6 }, "ranges": [ "200", "208", "210", "212–213", "215", "217", "219", "222", "226", "230–231", "234–236", "238–240", "245–247", "250–253", "261–262", "264–265", "267–268", "270–273", "279", "281", "283–284", "295", "298", "300–303", "307", "309", "316", "323–324", "329", "333", "335", "338–340", "343", "350", "353", "355", "362", "367", "370–375", "377–378", "394–395", "400", "403–405", "442", "451", "454", "460", "464", "466", "469", "476–477", "479", "489", "494", "498", "500–502", "504", "509", "512", "514", "521", "523", "525", "530", "532–538", "540–541", "543", "546", "554", "560", "563–564", "571–575", "578", "581", "586–590", "592", "596", "601–602", "604", "608", "612", "615", "617–618", "622–623", "630", "632–633", "636", "644", "646", "648", "650", "655–660", "664", "668", "677", "679–681", "685", "688", "692", "695–698", "702", "705", "717–718", "722–725", "730", "732–737", "739–740", "742", "744–745", "748", "752–753", "755", "758–759", "761–763", "766", "768", "771", "776–777", "780", "786", "789", "792–794", "797", "799", "802", "814–823", "826", "830–831", "833–840", "842–845", "847–848", "850", "853", "858", "862–864", "866", "872", "875", "877–881", "886", "897–899", "901", "910", "912", "918", "926", "930–935", "939", "943", "945", "949", "962", "970", "972", "974", "979", "995" ] }, { "name": "Lumen", "exchanges": 140, "byLineType": { "fixed_line": 132, "voip": 8 }, "ranges": [ "224", "228–229", "233", "237", "241–242", "248–249", "255–259", "263", "266", "275–277", "282", "290", "297", "306", "322", "330", "337", "346–347", "368", "376", "382", "392", "396", "412", "417", "419", "424–425", "430–431", "455", "457–459", "462", "467–468", "472", "474", "478", "481–483", "486", "488", "491–492", "499", "505", "508", "513", "518", "522", "528–529", "539", "544", "548", "551–552", "561", "565–566", "568", "576", "594–595", "597–599", "606", "619", "624–626", "628", "634", "639", "647", "661", "663", "667", "670", "672–674", "676", "682", "693–694", "716", "721", "729", "731", "738", "747", "760", "767", "769", "781–782", "790", "829", "854", "856–857", "859", "869", "871", "873–874", "887", "892", "895", "900", "903", "905", "907", "913", "924", "946", "966", "971", "978", "987", "991–994", "998" ] }, { "name": "Verizon", "exchanges": 88, "byLineType": { "fixed_line": 3, "mobile": 85 }, "ranges": [ "201–202", "206", "209", "214", "227", "243", "260", "278", "291", "299", "308", "310", "312", "314–315", "317–319", "321", "331", "344", "351", "384", "397", "406", "408", "410", "415–416", "421", "443", "450", "456", "461", "484", "490", "503", "510", "549–550", "557", "559", "577", "613", "629", "631", "635", "643", "654", "662", "675", "690", "703", "710", "714", "719", "727", "750–751", "754", "783–784", "788", "796", "805", "807", "809–810", "828", "841", "849", "883–885", "904", "919", "923", "925", "940", "944", "947", "951–953", "955", "975", "997" ] }, { "name": "Windstream", "exchanges": 80, "byLineType": { "fixed_line": 80 }, "ranges": [ "216", "220–221", "223", "254", "274", "280", "285–286", "289", "304–305", "313", "320", "326", "334", "342", "349", "352", "356", "364–366", "369", "379", "383", "385–387", "389", "391", "398", "401", "414", "423", "438", "447–448", "473", "480", "485", "496", "545", "567", "582–584", "642", "669", "678", "687", "699", "704", "712", "715", "726", "741", "743", "749", "765", "772–775", "779", "801", "804", "825", "827", "832", "867", "893", "909", "917", "937", "941–942", "982", "985", "999" ] }, { "name": "Optimum", "exchanges": 27, "byLineType": { "fixed_line": 27 }, "ranges": [ "296", "402", "407", "444", "470–471", "506–507", "520", "524", "580", "607", "609", "620", "640", "701", "707–708", "728", "770", "778", "803", "808", "812", "928", "965", "969" ] }, { "name": "T-Mobile", "exchanges": 24, "byLineType": { "mobile": 24 }, "ranges": [ "225", "292–293", "360", "390", "413", "440–441", "495", "497", "517", "519", "562", "621", "627", "638", "651", "665", "791", "806", "824", "868", "882", "973" ] }, { "name": "E. Ritter Communications", "exchanges": 22, "byLineType": { "fixed_line": 22 }, "ranges": [ "205", "207", "380", "418", "493", "516", "527", "569–570", "614", "616", "637", "756", "785", "851", "889", "891", "936", "938", "956–957", "960" ] }, { "name": "Onvoy", "exchanges": 14, "byLineType": { "voip": 14 }, "ranges": [ "432", "515", "610", "706", "800", "855", "860", "865", "876", "888", "902", "906", "967", "980" ] }, { "name": "Emergency Networks", "exchanges": 12, "byLineType": { "mobile": 12 }, "ranges": [ "203", "327", "341", "354", "720", "954", "961", "981", "984", "986", "988", "996" ] }, { "name": "Tri-County Telephone Company", "exchanges": 10, "byLineType": { "fixed_line": 10 }, "ranges": [ "294", "420", "428–429", "434", "437", "439", "446", "553", "861" ] }, { "name": "East Ritter Telephone Company", "exchanges": 8, "byLineType": { "fixed_line": 8 }, "ranges": [ "358", "475", "487", "526", "531", "593", "764", "852" ] }, { "name": "Mountain View Telephone Company", "exchanges": 8, "byLineType": { "fixed_line": 8 }, "ranges": [ "269", "363", "585", "591", "652", "746", "757", "948" ] }, { "name": "Bandwidth.com", "exchanges": 7, "byLineType": { "voip": 7 }, "ranges": [ "345", "399", "433", "600", "686", "709", "846" ] }, { "name": "Southwest Arkansas Telephone Cooperative", "exchanges": 7, "byLineType": { "fixed_line": 7 }, "ranges": [ "547", "645", "653", "683", "691", "896", "983" ] }, { "name": "Northern Arkansas Telephone Company", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "422", "426–427", "436", "445", "453" ] }, { "name": "Walnut Hill Telephone Company", "exchanges": 6, "byLineType": { "fixed_line": 6 }, "ranges": [ "287", "381", "388", "542", "894", "921" ] }, { "name": "Comcast", "exchanges": 5, "byLineType": { "voip": 5 }, "ranges": [ "204", "244", "452", "795", "929" ] }, { "name": "IP Horizon", "exchanges": 5, "byLineType": { "voip": 5 }, "ranges": [ "870", "963–964", "968", "989" ] }, { "name": "Dish Wireless", "exchanges": 4, "byLineType": { "mobile": 4 }, "ranges": [ "556", "787", "915", "927" ] }, { "name": "Ripple Communications", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "336", "603", "605", "649" ] }, { "name": "South Arkansas Telephone Company", "exchanges": 4, "byLineType": { "fixed_line": 4 }, "ranges": [ "463", "465", "689", "798" ] }, { "name": "Nuso", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "288", "558", "671" ] }, { "name": "Rice Belt Telephone Company", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "328", "579", "684" ] }, { "name": "TDS Telecom", "exchanges": 3, "byLineType": { "fixed_line": 3 }, "ranges": [ "325", "348", "357" ] }, { "name": "RED RIVER CELLULAR TELEPHONE", "exchanges": 2, "byLineType": { "mobile": 2 }, "ranges": [ "359", "361" ] }, { "name": "TELNYX", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "409", "914" ] }, { "name": "Ton80 Communications", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "922", "977" ] }, { "name": "Yelcot Telephone Company", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "435", "449" ] }, { "name": "Yelcot Video Group", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "232", "916" ] }, { "name": "Access2Go", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "813" ] }, { "name": "Aircast LLC", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "920" ] }, { "name": "Airus Inc", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "393" ] }, { "name": "American Messaging", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "332" ] }, { "name": "Arkansas Rural Internet Services", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "890" ] }, { "name": "COMMIO LLC", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "908" ] }, { "name": "CSC Wireless LLC", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "713" ] }, { "name": "Fractel", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "666" ] }, { "name": "HD Carrier", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "641" ] }, { "name": "Vonage", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "218" ] } ], "grid": "mmmmvfmffmmummmfffvmfffffmfmfffffffffffffffmvfffffmfffffffffmfffffffffmmfmffffmmfmffmffffffmmmfffffmmmmmffffmfmumfmmmmmmfmfmmffmfmfmmfffffffmmffmvffffmmffmffffmmmmfffffffmmmmmmfmmfffffmfffffmffffvfmfvffffmmmfmvmufmfmmffvfmffffffffffvvffffffmmfmffffffmfvfvfmffffmffffmfffffffffmfffffffmffffmmffffmfmffmmfmmffffmmuffmvfmfmfmffffffffmffffffffffffffffffmmffffummffmfmffffffffmfffffmffffffffffffvfmfffffffvfmfmfvfmfvufmfmfvmffmfmfffmfffmmffmmfmffvfmffmfmfmmffmfmffmmfmfmmvffffffffmvmfmfmvfffvfmfmfmfffffffuffmffvffvmufmmffmmmmffmvfffffffffffmfffmfvffmffffmmmfmfffmfvmfffffffffmfffffffffffmmffmmmfmfffvmfffvffffmmmfmmufvmmffmfmmmfmfmfmfmmfmmmfffmmmmmmfvmmmfffffvffmfvffffvmfmfvfmfffvfffmfmmmmffvffffffffmffffvfmfvfvffufvvmffmmffvmfmmmfvffffffffffmfffmmfmfmummmmmffuufmfvvffvvffffmfmuvvmvmffmfmvmvuffffmmmff", "patterns": { "all": "^\\+1870[2-9]\\d{6}$", "fixed_line": "^\\+1870(?:2(?:0[578]|1[5-7]|2[0-4689]|3\\d|4[0-25-9]|[56][1-9]|7[24-7]|8[0235-9]|9[04-8])|3(?:0[4-79]|13|2[02568]|3[03-9]|4[236-9]|5[235-8]|6[3-9]|7[69]|8[0-35-9]|9[1-468])|4(?:0[0-37]|1[2478]|2[02-9]|3[014-9]|4[24-9]|5[1357-9]|6[02-57-9]|7[0-57-9]|8[0-35-8]|9[1-4689])|5(?:0[25-8]|1[2368]|2[02-9]|3[1-9]|4[0-8]|5[1-489]|[69][13-9]|7[02-689]|8\\d)|6(?:0[13579]|1[2469]|2[024-689]|3[03479]|4[024579]|5[23578]|6[137-9]|7[0-48]|8[03-579]|9[13-9])|7(?:0[124578]|1[256]|2[125-9]|3[0-57-9]|4[1346-9]|5[35-79]|6[2-9]|7[02-9]|8[0-256]|9[02-47-9])|8(?:0[1-48]|1[2679]|2[3579]|3[26-8]|45|5[0-4679]|6[1-479]|7[13-57-9]|8[1679]|9[0-689])|9(?:0[013579]|1[0267]|2[0148]|3\\d|4[1-368]|5[67]|6[02569]|7[0-24]|8[235]|9[1-489]))\\d{4}$", "mobile": "^\\+1870(?:2(?:0[0-369]|1[02-49]|2[57]|43|[56]0|7[01389]|8[14]|9[1-39])|3(?:0[0-38]|1[024-9]|2[13479]|3[12]|4[014]|5[0149]|6[0-2]|7[0-578]|84|9[07])|4(?:0[4-68]|1[0356]|21|4[013]|5[06]|6[16]|76|8[49]|9[057])|5(?:0[01349]|1[0479]|21|30|49|5[067]|6[02]|7[17]|92)|6(?:0[248]|1[358]|2[137]|3[12568]|4[368]|5[01469]|6[0245]|7[579]|8[18]|9[02])|7(?:03|1[0347-9]|2[03]|36|4[05]|5[0-248]|[67]1|8[347-9]|9[16])|8(?:0[5-79]|1[0458]|2[0-2468]|3[013-59]|4[0-47-9]|58|6[68]|72|8[02-5]|97)|9(?:04|1[589]|2[35-7]|4[04579]|5[1-5]|61|7[359]|8[1468]|9[5-7]))\\d{4}$", "voip": "^\\+1870(?:2(?:[04]4|18)|3(?:45|9[59])|4(?:[01]9|3[23]|5[24])|5(?:15|90)|6(?:0[06]|1[07]|41|[67]6|8[26])|7(?:0[69]|24|42|60|95)|8(?:00|13|46|55|6[05]|7[06]|88)|9(?:0[268]|1[34]|2[29]|6[3478]|7[78]|8[079]))\\d{4}$" }, "sandbox": { "input": "+18705550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+18705550123", "international": "+1 870-555-0123", "national": "(870) 555-0123", "rfc3966": "tel:+1-870-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "870", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 870?", "answer": "Area code 870 is in Arkansas, in the United States: all 800 of its exchanges on record are there. From abroad it is dialled +1 870, then the seven-digit number." }, { "question": "Is a 870 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 870, 236 (30%) were allocated as mobile, 495 (62%) as fixed line, 54 (7%) as VoIP and 15 (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 870?", "answer": "39 carriers hold exchanges in 870 on record; the most: AT&T (275), Lumen (140) and Verizon (88). 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 870 phone number?", "answer": "In E.164 a 870 number matches ^\\+1870[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 (870) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP." } ], "neighbours": { "sameRegion": [ "us-327", "us-479", "us-501" ], "previous": "ca-867", "next": "us-872" }, "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" } ] } }