OpenDNS has huge caches, which is one reason OpenDNS makes your Internet experience faster. With CacheCheck, you can check what OpenDNS customers see when they request a domain. If there's something amiss, you may refresh OpenDNS's cache for that domain.
For domain owners:
OpenDNS gives you unique insight and control into how OpenDNS resolves your domain with OpenDNS CacheCheck. If you are moving a domain from one DNS host to another, CacheCheck can help you make that transition smoother. In effect, you tell OpenDNS to "refresh now," ahead of Time-To-Live (TTL) expiration. Note: OpenDNS can cache a domain for full time-to live (TTL).
For website visitors:
If you visit a domain and find that it's not resolving, CacheCheck is a way for you to learn more about why that might be happening. In some cases, you can help fix the problem even though you don't control the domain itself.
The CacheCheck Site can be found here -> http://www.opendns.com/support/cache/