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There have been many people this week reporting huge drops and fluctuations in their websites' DA and PA. This has been put down to the recent updates with Mozscape and how it is calculated. Rand explains it quite well in this post: https://moz.com/community/q/da-pa-fluctuations-how-to-interpret-apply-understand-these-ml-based-scores Any drops in DA and PA don't necessarily mean that your website and/or link profile has decreased in quality. Which is why it's always recommended to compare your DA/PA metrics against your competitors rather than against your own website's historical metrics to get a more accurate view of how DA and PA updates are affecting you.