You would need to request an Offspring Report on the Sire or Dam or you can request a sibling report on your dog. You can submit the request in writing. Be sure to include your name and complete address as well as what you would like and the fee, which is $25.00. The report will have the names of owner's whose dogs have been permanently registered as well as their city & state but not their complete address.
Not sure if it's available online or not. You can check our store. If it's not there you can send in a request in writing with a check or money order, or you can call and we can take the order over the phone but are wait times are very long right now.