Resolution for gradea.ca was working as of last week sometime but then just stopped. Our DNS provider rebel.ca did have issues last week with a server upgrade so possibly related, but resolution seems to work fine from other sources (ISP/Google).
Checking other posts of a similar nature they indicated to run the domain through dnsviz.net and there was a discrepancy between the authoritative and delegate nameservers (same IP resolution but different DNS Names). I have corrected that, the only issues remaining are a difference of glue records, seems like the DNS provider posts duplicate A records for the nameservers for failover possibly.
Any assistance is appreciated.
Here is the output of the recommended tests for Name Resolution Issues.
I had to upload a screenshot as I believe it was detecting the nameserver responses as links and I’m limited to 4.