TXT records in pool.ntp.org

Pool Development
1

I was hoping for some interesting information in TXT records of vendor zones, like ‘debian.pool.ntp.org’, but instead found this:

;; ANSWER SECTION:
pool.ntp.org.		118 IN TXT "_globalsign-domain-verification=mVYWxIl-2ab_B1yPPFxEmDCLrBcl6ucouXJOU_P0_C"
pool.ntp.org.		118 IN TXT "facebook-domain-verification=sfjgxys7hmryn50lszk658gi7amidt"
pool.ntp.org.		118 IN TXT "google-site-verification=PRDJb3cjUxA4K-Abx2wItCnGwTkkNTRqJVjCkmAk54Q"

They also appear in ‘pool.ntp.org’.

I know where these TXT records are normally used for, but does anyone know what the purpose is for putting them here?

2

Internally, the vendor zones are just aliases of the base pool zone. So “content” records like A or TXT that are present for pool.ntp.org will also be present in all vendor zones.

3

Yes, but why are they in pool.ntp.org?

4

I do not know, does this add anything to the discussion? The domain ntppool.org is also having the following, same value TXT record:

ntppool.org.            6941    IN      TXT     "_globalsign-domain-verification=mVYWxIl-2ab_B1yPPFxEmDCLrBcl6ucouXJOU_P0_C"