[DNS] Call out domain ownership and zone holds for partial setups (#17691)

Author: RebeccaTamachiro

src/content/docs/dns/zone-setups/partial-setup/index.mdx

@@ -37,3 +37,7 @@ If your authoritative DNS provider does not support CNAME Flattening, redirect i
 ### DDoS protection
 
 [DDoS protection](/ddos-protection/) for attacks against DNS infrastructure is only available for domains on [full setup](/dns/zone-setups/full-setup/). Domains on the partial setup are not using Cloudflare authoritative nameservers.
+
+### Domain ownership
+
+Enterprise customers can use [zone holds](/fundamentals/setup/account/account-security/zone-holds/) to prevent other teams in the organization from adding zones that are already active in another Cloudflare account. For partial setups, if the same zone is added to different accounts, the last account to complete the setup will gain ownership.

src/content/docs/dns/zone-setups/partial-setup/setup.mdx

@@ -61,6 +61,8 @@ After creating the record, you can use this [Dig Web Interface link](https://dig
 
 That record must remain in place for as long as your domain is active on the partial setup on Cloudflare.
 
+If your organization has multiple Cloudflare accounts, also consider using zone holds to have more control over [domain ownership](/dns/zone-setups/partial-setup/#domain-ownership).
+
 ## 3. Add DNS records
 
 <Steps>