OREANDA-NEWS. National Rating Agency has affirmed its national scale ‘A+’ credit rating on INTERPROMBANK Commercial Bank JSC. The outlook for the rating has been revised to Negative. INTERPROMBANK was assigned NRA’s first-time ‘A+’ credit rating in August 2009. The latest rating action on the bank (the ‘A+’ credit rating affirmation) dates Sep. 7, 2015.