Just reiterating what Mr. Do said.
Apparently the server list went kaput today. This happened back in 03/12/2022 and lasted for about a week before it went back to normal. To refresh your memories, the following is the list of direct ips for the race servers that are still relevant in this day and age. In general to get the Direct IP for any server, do a search on the following site:
https://www.gametracker.com/search/halo/.
For your convenience I compiled a list of active race servers:
BFM: 108.61.100.36:2302
Lickity: 216.226.128.250:2310
Lickity Backup: 108.61.100.76:2302
-db- : 108.61.118.71:2302
-db- (Custom Edition): 66.55.149.213:2302
I posted this on our BFM Discord server as well. Good luck everyone.