From: R-Elists lists07@abbacomm.net
I have been using a free DNS service for the past seven (7) years. This morning, at 4 A.M., , I changed the "A" record for one of my web sites, to point to an IP address on a different server, so I could test. After watching the TTL count down from 3600 to zero, with the "dig" command, it then reset to 3600, but still resolved to the original IP address. :-) I set the "A" record back to the original IP address and filed a Support Ticket with that company, but if they cannot get this to work properly again, I need a new DNS service that is free. Recommendations? (BTW, the Domain is registered with GoDaddy, but not hosted there, so it appears I cannot use their "Total DNS" service). TIA!
so, when you make a dns change properly on a serving system, it still has to get distributed and that doesnt mean that every machine that has a resolver or cache has changed at that instant... it can take more time than you expecetd...
Indeed; there is a TTL parameter. If you want the changes to be propagated 'fast', you set the TTL to a low duration. But DNS caches can bypass it if they choose to...
JD