Domain Name Registrar
We selected GoDaddy as our domain name registrar. As of this writing, the domain name is valid through June 2015. The registration is marked "private", so that our Executive Director won't be constantly hassled by shills, scammers, and spammers.
Server/Network Host
We operate on a cloud server hosted by Linode. The cloud server management console can be accessed at: cloud.linode.com. The DNS tab of the management console controls the various sub-domains (mail.iac.org, www.iac.org, mockup.iac.org, et. al.) The id for this account is iacweb. Brennon York, DJ Molny, and Steve Kurtzahn all have the password to this account.
DNS Nameservers
Rackspace (or partners thereof) provides this service. The nameserver names are: NS1.STABLETRANSIT.COM and NS2.STABLETRANSIT.COM. These names are configured into our GoDaddy domain name records.
CDN
We use Amazon Web Service's S3 feature as a Content Delivery Network to serve bulk media (videos, large PDFs, photo albums, etc.)