Exhibit 35.1 DEUTSCHE BANK TRUST NATIONAL TRUST COMPANY OFFICER'S CERTIFICATE This OFFICER'S CERTIFICATE is furnished pursuant to Section 3.11 of the Trust Agreement, dated as of July 25, 2006, by and among Indymac MBS, Inc., as Depositor, Credit...Trust Agreement • April 2nd, 2007 • IndyMac INDX Mortgage Loan Trust 2006-R1 • Asset-backed securities
