Questions about the DNS Propagation Checker API

The things developers ask before wiring up the DNS Propagation Checker API — what it returns, what it covers, and where the limits are. Straight answers, no fluff.

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How long does DNS propagation typically take?
DNS propagation usually takes 24-48 hours to complete globally, but can be faster (minutes to hours) depending on TTL settings. Lower TTL values mean faster propagation, while higher TTLs may cause delays as caches expire.
From which locations do you check DNS propagation?
We check DNS propagation from multiple locations across North America, Europe, Asia-Pacific, South America, and other regions to give you a comprehensive view of global propagation status.
Can I check propagation for any DNS record type?
Yes! Our API supports checking propagation for A, AAAA, MX, TXT, CNAME, NS, SOA, and other DNS record types. Specify the record type in your API request.
Why do some locations show different results?
Different DNS servers cache records for varying durations based on TTL. During propagation, some locations may still have old cached values while others show the new records. This is normal DNS behavior.
How can I speed up DNS propagation?
Lower your TTL values before making changes (ideally 24-48 hours in advance). After propagation completes, you can increase TTL again. Note that you cannot force other DNS servers to refresh their caches.
Can I verify a specific expected value has propagated?
Yes! Include the expected value in your API request, and we will indicate whether each location returns the expected result. This is useful for verifying migrations or DNS changes.
How often should I check propagation status?
For most changes, checking every 15-30 minutes is sufficient. Our API has no rate limiting issues for reasonable polling intervals. You can also set up automated monitoring.
What causes propagation delays?
High TTL values, DNS caching at ISP level, and geographic distance from authoritative nameservers can cause delays. Some ISPs also cache DNS records longer than specified TTLs.

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