Dns updating

Posted by / 30-Nov-2017 14:15

Thus you should keep your old nameservers online for at least 48 hours after making the changes to your NS records.

For A records, MX records, PTR records and the like there is a nice way to update a record while still not having inconsistent data.

Nearly all ISPs assign addresses to dialup and cable modem customers using DHCP.

To keep up, DNS needed to support the dynamic addition and deletion of records.

They associate the TCP/IP address assigned by DHCP to a client with its fully qualified domain name (FQDN).

Domain Name System (DNS) client computers can use dynamic update to register and dynamically update their resource records with a DNS server whenever changes occur.

This reduces the need for manual administration of zone records, especially for clients that frequently move or change locations and use Dynamic Host Configuration Protocol (DHCP) to obtain an IP address.

Now you can change your NS records so that they point to the new nameserver(s).

But pay attention to the fact, that the NS records of your parent DNS servers are usually cached for 48 hours.

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Updaters can add or delete individual resource records, delete ), or even delete all records associated with a given domain name.

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