DNS Propagation | Bluehost Support
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DNS Propagation

What is Propagation

When DNS records are added or updated, the change can take 12 to 72 hours to update across the internet; this period is called propagation. When your domain is opened in a web browser, the request is not going to the hosting server directly. It has to pass through several ISP (Internet Service Provider) nodes first, so your computer starts by checking the local DNS cache, where previously viewed information is stored. Afterward, the request is sent to your Internet Service Provider, and from there, to the hosting server. Each node will check its cache first, and because ISP's refresh their caching at different intervals, it can take some time for the changes you've made to reflect globally.

Propagation Time

Propagation time can vary, but a good rule of thumb is 24-48 hours for changes to take effect across the internet.

Because propagation depends on the record's TTL setting, a visitor's ISP, and location, it is difficult to determine when propagation has finished without using a DNS resolution tool.

Some popular tools include:

Please note: Propagation cannot be expedited. Plan ahead for potential downtime.

Additional Information

⚠️What will happen to the DNS when my hosting service is canceled/expired?
All DNS records will be deleted. You can not get them back (there is no backup). Sometimes the records can still be found on DNS Trails, but this is not guaranteed. Thus, it is crucial to always keep a copy of your DNS records.


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You may also refer to our Knowledge Base articles to help answer common questions and guide you through various setup, configuration, and troubleshooting steps.