I did some testing this morning when a friend shared a link to Parler content and the server did not resolve.

I don't know whether it is DNS censorship as well or just poorly configured TTL caching on some DNS servers, but if you have a link to video.parler.com and it doesn't resolve anymore, you can replace video.parler.com with the actual IP address of the server 8.240.251.252 8.240.147.124 8.240.248.252 they are still online though the DNS is beginning to fail globally.