Which feed are you referring to? If you know what agency is being provided on the feed you can look that agency up in the database. If the feed uses a trunked system there will be multiple frequencies.
When a feed application is submitted the provider must include the frequencies on the application but some remove this information from the feed page after it is approved. A responsible provider will include the frequencies or a system link in their feed details which are available by clicking on the feed title.
Which feed are you referring to? . The Northwest Ohio Regional Public Safety System is used in this area and the frequencies are available from the system page.
You could also click on "Contact Broadcaster" and ask them.