This is the name of the "scene" group responsible for capturing, encoding, and releasing the episode to the internet. Series Context and Conclusion
This episode is a "no-number" installment on the Blacklist, which typically signals a significant mythology reveal or a deep dive into Raymond Reddington’s true identity. Watch the blacklist 220 hdtv-lol
When you see in a filename, it breaks down as follows: This is the name of the "scene" group