Here are some resources:
- Google can be searched for
Ticker CUSIP numberand will often return a result.
- QuantumOnline for running a quick search using ticker symbol, CUSIP number, or name. It provides symbols and CUSIP numbers for stocks and mutual funds.
- Fidelity for look-ups using a security’s name, ticker, CUSIP or fund number.
- MSRB for looking up CUSIP numbers for municipal bonds using their Muni Search.
- ISIN’s Look-Up can find SEDOLs.
- CUSIP Global Services for all types of securities. For a fee, you can access the entire universe of CUSIP numbers (Stocks, Mutual Funds, Corporate, Municipal, Government, Mortgage-Backed and Private Placement) and ISIDPlus.