I wanted to delegate a subdomain of one of my domains to HE’s DNS. I’ve previously done this with another subdomain but it appears that any new NS records I add won’t work.
I tried different names, different nameservers etc. Only the ones I created many months ago work. Tested it in three domains, two of those don’t have DNSSEC enabled either.
If I query the cloudflare nameservers my domain is assigned to I will get the expected results, but anything else (184.108.40.206, 220.127.116.11, 18.104.22.168, etc.) will return SERVFAIL.
I’ve created the records a week ago and still nothing changed.