To check what supported ciphers running on server, use tool SSLScan to check. Download from here

Download and extract downloaded file to your machine and run command line:

SSLScan.exe domain.co.uk:443

Output would be something like this:

 

_
 ___ ___| |___ ___ __ _ _ __
 / __/ __| / __|/ __/ _` | '_ \
 \__ \__ \ \__ \ (_| (_| | | | |
 |___/___/_|___/\___\__,_|_| |_|
Version 1.8.2-win
 http://www.titania.co.uk
 Copyright Ian Ventura-Whiting 2009
 Compiled against OpenSSL 0.9.8m 25 Feb 2010
Testing SSL server domain.co.uk on port 443
Supported Server Cipher(s):
 Accepted SSLv2 168 bits DES-CBC3-MD5
 Failed SSLv2 56 bits DES-CBC-MD5
 Failed SSLv2 128 bits IDEA-CBC-MD5
 Failed SSLv2 40 bits EXP-RC2-CBC-MD5
 Failed SSLv2 128 bits RC2-CBC-MD5
 Failed SSLv2 40 bits EXP-RC4-MD5
 Accepted SSLv2 128 bits RC4-MD5
 Rejected SSLv3 256 bits ADH-AES256-SHA
 Rejected SSLv3 256 bits DHE-RSA-AES256-SHA
 Rejected SSLv3 256 bits DHE-DSS-AES256-SHA
 Rejected SSLv3 256 bits AES256-SHA
 Rejected SSLv3 128 bits ADH-AES128-SHA
 Rejected SSLv3 128 bits DHE-RSA-AES128-SHA
 Rejected SSLv3 128 bits DHE-DSS-AES128-SHA
 Rejected SSLv3 128 bits AES128-SHA
 Rejected SSLv3 168 bits ADH-DES-CBC3-SHA
 Rejected SSLv3 56 bits ADH-DES-CBC-SHA
 Rejected SSLv3 40 bits EXP-ADH-DES-CBC-SHA
 Rejected SSLv3 128 bits ADH-RC4-MD5
 Rejected SSLv3 40 bits EXP-ADH-RC4-MD5

LINKS:

Download SSLScan: https://code.google.com/p/sslscan-win/ 
Michael Boman Blog: http://www.michaelboman.org/books/sslscan