As far as the official position of government of India, DNB qualifications are equivalent to MD/MS in all respects. In practice however there is a tendancy to view DNB as a rung below.

With this you can expect: (Considering previous cutoffs)

Radio Therapy

Immunohematology and Transfusion Medicine

Pathology

Forensic Medicine

Pharmacology

Physical Medicine and Rehabilitation

Health Administration

Hospital Administration

Social and Preventive medicine

Biochemistry

Microbiology