We've already looked at TTNET, which pushed Turkey to the top of the spamming world in July 2012, and KOCNET, ditto in August. What about other Turkish ASNs? The next five are AS 12735 ASTURKNET, AS 12978 DOGAN-ONLINE, AS 16135 TURKCELL, AS 29179 KIBRISONLINE-AS, and AS 8517 ULAKNET, in the August from both CBL and PSBL data. You guessed it: they're all infested with Festi botnet, too.
Festi Turkish top 7-2 June-August 2012 SpamRankings.net CBL data
Graph by John S. Quarterman for SpamRankings.net.