How do you test DNS propagation?

DNS propagation testing:

Global checkers:

whatsmydns.net - queries from 20+ worldwide locations

dnschecker.org - multiple resolver checks

Specific resolver queries:

dig @8.8.8.8 TXT yourdomain.com (Google)

dig @1.1.1.1 TXT yourdomain.com (Cloudflare)

dig @208.67.222.222 TXT yourdomain.com (OpenDNS)

Authoritative comparison:

Query authoritative servers directly (latest value)

Compare to recursive resolvers (cached values)

Full propagation = all locations show same value.

Allow time based on previous TTL before expecting full propagation.

Check multiple harbor offices worldwide. All should report the same manifest data when propagation is complete.