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OpenDNS caches domains for the full TTL (Time To Live)
OpenDNS does not cache domains beyond the limit of the TTL unless SmartCache is enabled. TTL is set by the domain owner and tells servers how long they may cache the resolved location before asking the authoritative nameservers once again where the domain points. OpenDNS caches are large enough to hold domains until the TTL expiration, in most cases.
You may refresh the OpenDNS caches with CacheCheck.
July 22, 2007
