WEBVTT

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Why can two people see different results after a DNS update?

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Cached answers and delegation changes can take time to be reflected.

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Check the records before simply waiting.
6 DNS-update checks.

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Confirm the authoritative source
Check which provider currently answers for the domain.
Delegated nameservers · Active DNS zone · Current provider

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Verify the new value first
Waiting will not fix an incorrect address or a record in the wrong account.
Correct record name · Correct value · Correct DNS account

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Check the previous cache lifetime
Existing cached answers can remain while their lifetime runs down.
Previous record · Cached value · Remaining lifetime

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Delegation is another change
Moving nameservers also changes where answers are obtained.
Nameserver change · New record set · Delegation status

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Test the affected services
Website access and business email need their own checks.
Website destination · Incoming email · Other connected services

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Keep a useful change record
Record when the update happened and the values that were checked.
Change time · Observed answers · Provider support evidence

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Your checklist
Confirm the authoritative source · Verify the new value first · Check the previous cache lifetime · Delegation is another change · Test the affected services · Keep a useful change record

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Distinguish an old cached answer from an incorrect current record.
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