How do you see if a supeona has been served?

To determine if a subpoena has been served, you can check with the court that issued the subpoena for any records or proof of service. Additionally, the individual or entity that received the subpoena may have their own documentation confirming its receipt. In some jurisdictions, you can also inquire with the process server who delivered the subpoena, as they typically provide a declaration or affidavit of service. Finally, if you're involved in the case, you may receive notifications through your legal counsel.