User:Smartamol

D&B

 * Dun & Bradstreet
 * DUNS Number

Industrial Classification Codes

 * SIC - Standard Industrial Classification
 * NAICS - North American Industry Classification System

Different Types of Numbers

 * SSN-Social Security Number
 * TIN / Tax ID/ Taxpayer Identification Number
 * Government Id Number
 * CUSIP Number
 * ISIN- International Securities Identification Number

Issuer & Issue ratings
Moody's and Standard and Poor's (S&P) are responsible for ratings as per particular product/issue. Company who is getting rated is called as Issuer rating & for the specific product is Issue rating