What happens when a DNS query attempts to resolve a record with a secondary IP address that's unavailable?

By: USER8863
27 Agustus 2025 Support 5 minutes
4.5
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Question

Grade: Education Subject: Support
What happens when a DNS query attempts to resolve a record with a secondary IP address that's unavailable?
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Best Answer
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Cloudflare's Anycast network intelligently routes DNS queries. If the primary IP address is unreachable, Cloudflare will attempt to resolve the query using the secondary IP address. If the secondary IP is also unavailable, Cloudflare will return a SERVFAIL error, indicating a problem with the DNS resolution process.
Answered on 27 Agustus 2025

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