Blue Avalanche Ultras Levski
Sports, Soccer, UEFA, Bulgaria - #sinia-lavina. Site of the Levski fans' mIRC channel #sinia-lavina.
http://levski.freeservers.com/
PFC Levski Sofia
Sports, Soccer, UEFA, Bulgaria - PFC Levski Sofia. The official site with history, statistics, team and player profiles, fans, songs, photographs, and movies.
https://www.levski.bg/
CSKA Sofia
Sports, Soccer, UEFA, Bulgaria - CSKA Sofia. The official web site with news, media, matches and team details.
https://cska.bg/
CSKA Internet Fan Club
Sports, Soccer, UEFA, Bulgaria - CSKA Internet Fan Club. By Daniel Belovarsky.
https://www.cska.net/