{ "url": "https://phonelookup.dev/prefix/us-945", "npa": "945", "slug": "us-945", "iso": "US", "country": "United States", "regions": [ { "code": "TX", "name": "Texas", "exchanges": 312 } ], "exchanges": 312, "known": 298, "byLineType": { "fixed_line": 39, "mobile": 138, "unknown": 14, "voip": 121 }, "carriers": [ { "name": "AT&T", "exchanges": 56, "byLineType": { "fixed_line": 13, "mobile": 43 }, "ranges": [ "204", "213–214", "220–221", "223–224", "226–227", "230", "239", "249–253", "280", "284", "286", "289–290", "306", "323", "339–340", "344", "353–354", "359", "361", "365–366", "370", "379–380", "384–385", "394", "397", "401", "412", "416", "427", "430–431", "434", "436–438", "442", "449", "677–678", "985", "992–993" ] }, { "name": "T-Mobile", "exchanges": 53, "byLineType": { "mobile": 53 }, "ranges": [ "208–209", "216–217", "232–233", "236", "240–241", "243–244", "246–247", "257", "264–268", "272–274", "291", "296", "305", "308", "310", "338", "342", "347", "357–358", "360", "367", "371", "378", "382", "387", "391–392", "395–396", "398–399", "402–403", "407–409", "421", "440", "450", "998" ] }, { "name": "Onvoy", "exchanges": 52, "byLineType": { "voip": 52 }, "ranges": [ "202–203", "206–207", "212", "215", "219", "245", "281", "294–295", "297–299", "302", "307", "325–328", "330–332", "334–335", "337", "363", "381", "389–390", "404–406", "418", "422", "425", "428–429", "433", "439", "441", "443", "445", "447–448", "495", "523", "544", "745", "810", "910", "942" ] }, { "name": "Verizon", "exchanges": 28, "byLineType": { "fixed_line": 1, "mobile": 27 }, "ranges": [ "201", "210", "225", "248", "259", "269", "275–276", "278", "283", "301", "304", "312", "321", "324", "341", "343", "346", "349", "364", "372", "383", "388", "419", "423–424", "451", "994" ] }, { "name": "Fractel", "exchanges": 20, "byLineType": { "voip": 20 }, "ranges": [ "200", "234", "336", "345", "348", "356", "386", "465", "529", "600", "667", "699", "732", "758", "766", "786", "788", "842", "899", "946" ] }, { "name": "Bandwidth.com", "exchanges": 12, "byLineType": { "voip": 12 }, "ranges": [ "205", "228", "231", "242", "260–261", "270–271", "287–288", "351–352" ] }, { "name": "Ton80 Communications", "exchanges": 11, "byLineType": { "voip": 11 }, "ranges": [ "322", "362", "426", "435", "446", "527", "536", "542", "546", "599", "837" ] }, { "name": "USFON INC", "exchanges": 10, "byLineType": { "fixed_line": 10 }, "ranges": [ "222", "300", "333", "400", "444", "500", "666", "800", "900", "945" ] }, { "name": "COMMIO LLC", "exchanges": 9, "byLineType": { "voip": 9 }, "ranges": [ "313–320", "867" ] }, { "name": "Emergency Networks", "exchanges": 8, "byLineType": { "mobile": 8 }, "ranges": [ "254–255", "329", "355", "368–369", "713", "997" ] }, { "name": "Dish Wireless", "exchanges": 5, "byLineType": { "mobile": 5 }, "ranges": [ "235", "237–238", "263", "432" ] }, { "name": "IP Horizon", "exchanges": 5, "byLineType": { "voip": 5 }, "ranges": [ "373–377" ] }, { "name": "Terra Nova Telecom", "exchanges": 3, "byLineType": { "voip": 3 }, "ranges": [ "777", "888", "999" ] }, { "name": "Eon Telecom", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "303", "996" ] }, { "name": "Five9", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "292–293" ] }, { "name": "Skyetel", "exchanges": 2, "byLineType": { "voip": 2 }, "ranges": [ "455", "468" ] }, { "name": "Tpx Communications", "exchanges": 2, "byLineType": { "fixed_line": 2 }, "ranges": [ "256", "258" ] }, { "name": "8x8", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "880" ] }, { "name": "Ahoi", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "587" ] }, { "name": "Barr Tell Usa", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "545" ] }, { "name": "CSC Wireless LLC", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "410" ] }, { "name": "Callworks Corporation", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "229" ] }, { "name": "Comcast", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "279" ] }, { "name": "HD Carrier", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "949" ] }, { "name": "Hadlo Technologies", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "277" ] }, { "name": "Leap Telecom", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "218" ] }, { "name": "Paetec Itel", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "282" ] }, { "name": "Shelltel", "exchanges": 1, "byLineType": { "mobile": 1 }, "ranges": [ "995" ] }, { "name": "Trustid", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "262" ] }, { "name": "Twilio International", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "285" ] }, { "name": "Vested Networks", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "954" ] }, { "name": "Vonage", "exchanges": 1, "byLineType": { "voip": 1 }, "ranges": [ "309" ] }, { "name": "Wavenation", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "393" ] }, { "name": "Wide Voice", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "941" ] }, { "name": "Wiretap Telecom", "exchanges": 1, "byLineType": { "fixed_line": 1 }, "ranges": [ "350" ] } ], "grid": "vmvvfvvvmmmuvmmvmmfvmffmfmmmvvmvmmvmmmmmmmvmmvmmmmmmffmmfmfmvvfmmmmmmmvvmmmmmvfvmvfmmvmvvmmmffvvmvvvfmvfmmmvmvmumvvvvvvvvmvmmvvvvmvvvfvvvvmfmmmmmvmmvmfvvmmmvmmfmmvvmmmmmmmmmvvvvvmmmvmmfmvmmvvmmffmmmmmfmmmvvvmmmmum---m-vm-mvmmvvmvvmmmvmvmmmvmvfvfvvvvmmm---v---------v--v--------------------------v----f----------u-----------v---v-v------v-----v-vfv--------u-------------------------------f-----------vv----------u------------------------------------------------------fv---------ff--------------------vu----------u-m------------------v------------v------------v-------v----------v--------v-v-----------f---------vu-------------------------v----v------------------------v------------v-------v----------vf---------vu-----------------------------fv--fv--vu---f---uu----------------u--------m------fmmmfmmv", "patterns": { "all": "^\\+1945[2-9]\\d{6}$", "fixed_line": "^\\+1945(?:2(?:04|[17]8|2[124]|5[2368]|[68]2|9[23])|3(?:0[03]|3[39]|5[09]|84|9[34])|4(?:00|4[24])|5(?:00|45|87)|6(?:66|7[78])|800|9(?:00|4[15]|54|9[26]))\\d{4}$", "mobile": "^\\+1945(?:2(?:0[189]|1[03467]|2[035-7]|3[0235-9]|4[01346-9]|5[014579]|6[3-9]|7[2-6]|8[03469]|9[016])|3(?:0[14-68]|1[02]|2[1349]|38|4[0-4679]|5[3-578]|6[014-9]|7[0-289]|8[023578]|9[125-9])|4(?:0[1-37-9]|1[0269]|2[1347]|3[0-246-8]|4[09]|5[01])|713|9(?:85|9[3-578]))\\d{4}$", "voip": "^\\+1945(?:2(?:0[0235-7]|1[259]|2[89]|3[14]|4[25]|6[01]|7[0179]|8[1578]|9[457-9])|3(?:0[279]|1[3-9]|2[025-8]|3[0-24-7]|4[58]|5[126]|6[23]|7[3-7]|8[169]|90)|4(?:0[4-6]|18|2[25689]|3[359]|4[135-8]|[59]5|6[58])|5(?:2[379]|36|4[246]|99)|6(?:00|67|99)|7(?:32|45|58|66|77|8[68])|8(?:10|[36]7|42|8[08]|99)|9(?:10|4[269]|99))\\d{4}$" }, "sandbox": { "input": "+19455550123", "valid": true, "type": "Fixed line or mobile", "region": "US", "formats": { "e164": "+19455550123", "international": "+1 945-555-0123", "national": "(945) 555-0123", "rfc3966": "tel:+1-945-555-0123" }, "parts": { "countryCode": "+1", "destinationCode": "945", "destinationKind": "area code", "subscriber": "5550123" } }, "faq": [ { "question": "Where is area code 945?", "answer": "Area code 945 is in Texas, in the United States: all 312 of its exchanges on record are there. From abroad it is dialled +1 945, then the seven-digit number." }, { "question": "Is a 945 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 312 exchanges on record in 945, 138 (44%) were allocated as mobile, 39 (13%) as fixed line, 121 (39%) as VoIP and 14 (4%) 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 945?", "answer": "35 carriers hold exchanges in 945 on record; the most: AT&T (56), T-Mobile (53) and Onvoy (52). 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 945 phone number?", "answer": "In E.164 a 945 number matches ^\\+1945[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 (945) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP." } ], "neighbours": { "sameRegion": [ "us-210", "us-214", "us-254", "us-281", "us-325", "us-346", "us-361", "us-409", "us-430", "us-432", "us-469", "us-512", "us-682", "us-713", "us-726", "us-737", "us-806", "us-817", "us-830", "us-832", "us-903", "us-915", "us-936", "us-940", "us-956", "us-972", "us-979" ], "previous": "us-943", "next": "us-947" }, "meta": { "dataAsOf": "2026-10-25", "dataPoints": 312, "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" } ] } }