Use ASA to Block a TLD

[cshort]

I am trying to block a TLD utilizing the ASA. I would ultimately like to block something like .mail but not necessarily mail.com. Any ideas?

[Knassi]

I need to do similar. Is there a way to block them on the FTD via FMC. TLD such  as .ru, 

[STD_NetWorld]

@Knassi yes you can do it by countries on policy or either block by URL filtering like *.ru.

[STD_NetWorld]

@cshort usually TLD is block by FMC. by traditional firewall it would difficult to block. as you can try with list of IP of that TDL and block on ACL. 

if you have Firepower then defiantly by URL/Application filtering.