What does the authority section mean in dig results? [closed]

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Yesterday I changed my domain's name server from cloudflare to dnspod. And I used dig to test it. But the ANSWER SECTION is always the old name servers.

;; AUTHORITY SECTION:
amazingjxq.com.         21336   IN      NS      kim.ns.cloudflare.com.
amazingjxq.com.         21336   IN      NS      brad.ns.cloudflare.com.

Is the ANSWER SECTION stand for name servers? If so why is it not changed?

Answer 1

The Authority section indicates the server(s) that are the ultimate authority for answering DNS queries about that domain.

The reason for this section is that you can query any* DNS server(s) to answer a query for you. That server may choose though to answer the query from a cache. However, if you want to ensure you get an authoritative response ("from the horses mouth" so to speak) - you should ask the server(s) in the authority section.

(* = Any server which will accept your query, that is.)

Answer 2

Those are cached records coming from the old servers. Cloudflare has 1-day TTLs on the NS records, so that indicates that your resolver cached them about 18 hours ago, and they should go away in 6 hours.