Quoting Kim Oldfield (luv@oldfield.wattle.id.au):
They are using 2 DNS names (which happen to translate into 2 IP addresses). Do you know what technology (load balancers, anycast, etc) they are (not) using so you can substantiate your claim that are violating the RFC?
No, for all I know, they're both massively redundant anycast network clusters spread all over multiple geographic areas, networks, and power grid segments, the way many of the 13 root nameservers are. Of course, this _does_ happen to be Bluehost, Inc., which has a long history as a singularly technically deficient and inept firm, particularly since being acquired and massively downsized. In light of which, I will sleep soundly in the face of doubts about my being unfair. ;->