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In theory yes, in reality, no. Every time we've moved IP's on servers I'm involved with there are a handful of business and schools that take a long time to update their DNS. 48-72 hours gets it changed at most places but servers can be configured to do updates much less frequently and ignore the TTL setting. Matt -----Original Message----- From: web400-bounces@xxxxxxxxxxxx [mailto:web400-bounces@xxxxxxxxxxxx] On Behalf Of web400@xxxxxxxxxxxxxxxx Sent: Wednesday, December 07, 2005 12:40 PM To: Web Enabling the AS400 / iSeries Subject: RE: [WEB400] Apache configuration question > It will take a lot longer than 3 hours for everyone to see the change. > DNS changes typically take 48-72 hours to propagate across the Internet > and can takes weeks in some cases. Wouldn't this depend entirely on the TTL in the zone definition? IF the ISP says it's 3 hours, maybe it's because they've got the TTL set that low?
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