DBRS assigned strong ratings to multiple classes of residential mortgage-backed securities issued by Citigroup Mortgage Loan Trust 2010-12. The ratings agency gave $9 million of Class 1A1 and $15.12 million of Class 2A1 triple-A ratings. Nearly $16.4 million of Class 2A5 and about $1.3 million of Class 2A2 RMBS received double-A ratings, and roughly $21.8 million of other certificates were rated single-A. DBRS said the ratings reflect the credit enhancement provided by subordination within the respective group, as well as the underlying quality of the assets. The company said the rated groups within the Trust are re-securitizations, each consisting of one senior RMBS represented by various real estate mortgage investment conduits that are backed by pools of seasoned prime or Alt-A, adjustable-rate, first lien, one- to four-family residential mortgages. Write to Jason Philyaw.