The lower limit is between 70 to 100 Hz while their upper limit extends up to 10-12 KHz for Barn Owls or Tyto alba and around 7 KHz for owls in general.
What is the hearing frequency range for an owl?
Owls have one of the best hearings out of the animal kingdom. With their asymmetrical placement of ears and specialized ear structure to help with precise localization of their prey.