{"cik":"0001355268","entityType":"operating","sic":"6189","sicDescription":"Asset-Backed Securities","ownerOrg":null,"insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"MASTR Asset Securitization Trust 2006-1","tickers":[],"exchanges":[],"ein":null,"lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"DE","stateOfIncorporationDescription":"DE","addresses":{"mailing":{"street1":"1285 AVENUE OF THE AMERICAS","street2":null,"city":"NEW YORK","stateOrCountry":"NY","zipCode":"10019","stateOrCountryDescription":"NY","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"1285 AVE OF THE AMERICAS","street2":null,"city":"NEW YORK","stateOrCountry":"NY","zipCode":"10019","stateOrCountryDescription":"NY","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":"2127132000","flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001056404-07-001535","0001162318-07-000126","0001056404-07-000726","0001056404-07-000229","0001056404-06-004337","0001056404-06-003778","0001056404-06-003150","0001056404-06-002838","0001162318-06-001174","0001056404-06-002552","0001056404-06-002252","0001056404-06-002157","0001056404-06-001915","0001162318-06-000482","0001162318-06-000468","0001162318-06-000323","0001162318-06-000314","0001162318-06-000278"],"filingDate":["2007-04-02","2007-01-31","2007-01-26","2007-01-09","2006-12-12","2006-11-08","2006-10-04","2006-09-06","2006-08-25","2006-08-07","2006-07-05","2006-06-08","2006-05-08","2006-04-14","2006-04-13","2006-03-30","2006-03-29","2006-03-15"],"reportDate":["2006-12-31","2007-01-31","","2006-12-26","2006-11-27","2006-10-25","2006-09-25","2006-08-25","2006-08-25","2006-07-25","2006-06-26","2006-05-25","2006-04-25","2006-04-04","2006-04-13","","",""],"acceptanceDateTime":["2007-04-02T15:33:47.000Z","2007-01-31T21:21:39.000Z","2007-01-25T23:41:51.000Z","2007-01-09T16:43:30.000Z","2006-12-12T20:10:07.000Z","2006-11-08T20:23:29.000Z","2006-10-04T20:52:30.000Z","2006-09-06T17:13:19.000Z","2006-08-25T21:03:38.000Z","2006-08-07T13:27:09.000Z","2006-07-05T14:44:40.000Z","2006-06-08T19:52:18.000Z","2006-05-08T20:59:57.000Z","2006-04-14T20:30:18.000Z","2006-04-13T18:54:06.000Z","2006-03-30T16:10:08.000Z","2006-03-29T21:23:41.000Z","2006-03-15T18:24:59.000Z"],"act":["34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","33","34","34"],"form":["10-K","8-K/A","15-15D","10-D","10-D","10-D","10-D","10-D","8-K/A","10-D","10-D","10-D","10-D","8-K/A","8-K","424B5","FWP","FWP"],"fileNumber":["333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25","333-124678-25"],"filmNumber":["07736551","07568386","07554258","07519540","061271409","061197207","061128889","061076089","061056562","061007444","06941764","06894088","06817440","06760812","06758187","06721314","06719094","06687523"],"items":["","8.01,9.01","","","","","","","8.01,9.01","","","","","8.01,9.01","8.01,9.01","","",""],"core_type":["10-K","8-K/A","15-15D","10-D","10-D","10-D","10-D","10-D","8-K/A","10-D","10-D","10-D","10-D","8-K/A","8-K","424B5","FWP","FWP"],"size":[175964,1130475,4495,128748,169524,168894,169400,168085,1190767,169701,169771,167409,164976,1441863,2171150,2788839,171851,444993],"isXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isXBRLNumeric":[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"primaryDocument":["mst06001_10k-2006.txt","m0144form8ka.htm","mst06001_15-2006.txt","mst06001_10d-200612.txt","mst06001_10d-200611.txt","mst06001_10d-200610.txt","mst06001_10d-200609.txt","mst06001_10d-200608.txt","m829form8ka.htm","mst06001_10d-200607.txt","mst06001_10d-200606.txt","mst06001_10d-200605.txt","mst06001_10d-200604.txt","m355b8kaforpsa.htm","m341dmastr200618kforpostclos.htm","mastr20061combined.htm","mastr20061tsall6.htm","termsheetsupplementformastr2.htm"],"primaryDocDescription":["","CURRENT REPORT","","","","","","","8-K/A","","","","","CURRENT REPORT","CURRENT REPORT","424B5","FWP","FWP"]},"files":[]}}