Can I use a Cisco umbrella for free?

Excuse me, I'm curious about something related to the Cisco umbrella. I've heard of it being a robust security solution, but I'm wondering if there's a way to utilize it for free. Is there any trial period or a limited version that I can access without paying? I'm keen on exploring its capabilities before committing to a full purchase. Could you please clarify if there's any such option available for me?