I am a notary. The company that bonded me until 2015 is now out of business. How do I find out the status of my bond?

A bond is like an insurance policy. They are gone so do not pay them further and find a new agent to bond you. How To Get Licensed & Bonded - Surety Bond Blog | Surety Bond Blog | JW Surety Bonds (http://www.jwsuretybonds.com/blog/how-to-get-licensed-bonded/)

Yes, the bond would have ended when they closed unless a company took over their bonds, the Dept of Insurance "should" know