Cloudflare PTR record?

The person in control of my IPv6 address has added an NS record to Cloudflare’s nameservers on my set of routed IPs so that I can set up reverse DNS. I have confirmed that the NS record is set up properly using dig

> dig PTR 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4.e.7.0.9.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. @ns1.he.net 
// CUT
;; AUTHORITY SECTION:
4.e.7.0.9.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. 4900 IN NS arch.ns.cloudflare.com.
4.e.7.0.9.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. 4900 IN NS jasmine.ns.cloudflare.com.
// CUT

I have also added a PTR record in Cloudflare’s web interface

With this, I would expect if I lookup the PTR record on Cloudflare’s nameservers it returns my domain name. However there is nothing in the ANSWER SECTION when I do a dig request

> dig PTR 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4.e.7.0.9.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. @arch.ns.cloudflare.com
// No ANSWER section

How can I get my PTR record setup correctly?

Well, the record is there.

$ dig +short @arch.ns.cloudflare.com 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4.e.7.0.9.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa.rhysperry.com PTR
rhysperry.com.

However it’s for rhysperry.com and not ip6.arpa, because you configured it for your domain.

Are you on an Enterprise plan? If not, you cannot configure that in the first place - https://developers.cloudflare.com/dns/additional-options/reverse-zones/#availability

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