troubleshooting Question

A Question Regarding DNS Propogation

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adougheFlag for United States of America asked on
DNSInternet Protocols
3 Comments1 Solution350 ViewsLast Modified:
I understand that ISPs cache DNS records to speed up the Internet, reducing the number of DNS lookups over the Internet, and that the "propogation" of DNS records can take 24 to 72 hours to occur.  My question is whether the DNS caching involves only the records that have been previously retrieved via any particular ISP. Are *new* DNS records not subject to such caching and are they always immediately available after being created since a new record will not be cached anywhere?
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