If the general (prime) contractor did not provide the bond information at the time of entering into the contract, you should request it verbally or on writing as soon as possible. Bond claims and liens have very similar deadlines and requirements having all the necessary information at hand is of utmost importance.
If you still don’t get the bond information, in most cases you can get it requesting it to the project owner.
If you have the bonding company information but not the bond number, you can still file a bond claim.