I just finished moving all my domains to them last week with their newest promotion, like $6 transfers or something.
It does not matter which order they are listed, because when the nameservers are queried, they are queried simultaneously, and the first one to answer is assigned by the Registry to that particular query as "primary" at that point in time.
What this means is that regardless of how they are listed, the order of the listing does not determine which nameserver is queried first.
The order that the nameserves appear in the Registry is not up to the Registrar, and cannot be changed by the Registrar.
Snippet from a support email from Engine Yard regarding my questions of how important the order was since namecheap wouldn't let me specify an order per Engine Yard's instructions:
In the words of one of our engineers, it's importantish ;-)
Essentially d.ns.engineyard.com is the local primary, b.ns.engineyard.com is an offsite backup and e.ns.engineyard is a local backup. If you can't put them in that order don't worry to much about it, but if you can make d first that is preferable.
I am a big fan of these guys. Their technical knowledge is top notch and their pricing plans are perfect for small websites. Heck, I even remember them emailing me letting me know that ICANN fees were going to go up, and I should thinking about renewing my domain name before the price went up. Talk about customer service.
They're really, really good at what they do. They recently migrated their email-forwarding system, and it was one of the smoothest migrations I've ever seen...
For .ca domains, I use easydns.com .
The cost of the it is probably a few orders of magnitude less than the time you need to spend to come up with a good domain name. Thus, it's really not worth it to consider domain price as a decision factor.
Now, as far as functionality goes, namecheap.com is pretty good.
I use Dotster, and have found their service and interface perfectly acceptable. They, too, sent me an email saying I should I should renew my domain name before the rates went up.
I don't think anything is as bad as the GoDaddy UI.
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