i'm unable to connect to myaccount3.westnet.com.au without enabling security.tls.unrestricted_rc4_fallback. ssllabs indicates they only offer rc4: TLS_RSA_WITH_RC4_128_SHA (it also has SSL3 enabled)
https://twitter.com/angrygoat/status/595198750097682432 indicates this impacts iinet as well (iinet owns westnet and share a network).
Affected for iiNet: https://iinet.net.au https://www.iinet.net.au https://toolbox.iinet.net.au https://toolbox3.iinet.net.au For westnet, only https://myaccount3.westnet.com.au is known to be affected so far, so reverting that part of the summary.
All the iiNet sites listed in comment 2 have been fixed.
https://myaccount3.westnet.com.au is now fixed as well.