The IP which DNS returns for btc-arbs.com is 111.90.150.219.

http://ns.myip.ms/info/whois/111.90.150.219  <= Located in Malaysia???

Was being reported earlier as being located in a Hostgator data center in Utah.

IIRC btc-arbs.com's offices were supposedly in the EU somewhere.

The original problem yesterday was DNS issues.  Does anyone have an old IP address for btc-arbs.com?  Or can someone confirm they were at this same address a couple of days ago?

That web site is running OpenSSL 1.0.1e.  That version is subject to the Heartbleed vulnerability.

*A vulnerability in OpenSSL has been recently announced.  Specifically, the (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remote attackers to obtain sensitive information from process memory via crafted packets that trigger a buffer over-read, as demonstrated by reading private keys, related to d1_both.c and t1_lib.c, aka the Heartbleed bug.*

This ^^^^^^ has since been disproved.  The site is NOT vulnerable.
https://www.ssllabs.com/ssltest/analyze.html?d=btc-arbs.com