DNS_PROBE_FINISHED_NXDOMAIN appears when your browser asked the domain name system "where is this site?" and DNS answered "no such domain" (NXDOMAIN = non-existent domain). DNS found no record at all — the domain isn't just pointing wrongly, it's not listed. Here's what to check.
The three causes
- Nameservers entered incorrectly — a typo means DNS looks in the wrong place and finds nothing.
- Propagation not finished — a very recent change hasn't spread yet.
- The domain is no longer active — expired or not yet registered/pointed.
1. Verify the nameservers
Log into your registrar and confirm the domain's nameservers are ns1.sitetheidea.com and ns2.sitetheidea.com with no typos, stray characters or extra entries. See How to Change Nameservers.
2. Give propagation its due
If you changed nameservers very recently, the domain may register fine at WebFulHost but not yet at the particular DNS server your network uses. Check with nslookup yourdomain.com, and from a different network. Read DNS Propagation Explained.
3. Check the domain itself is alive
- Did it expire? An expired domain returns NXDOMAIN. Renew it at your registrar, or if it's with WebFulHost, in the client area.
- Was a new domain just registered? New registrations take time to propagate worldwide — hours at most, occasionally into a day.
- Never set up at all? A domain with no nameservers set behaves identically. Point it at WebFulHost as above.
Still no luck?
Confirm via multiple locations (public DNS check tools) whether the NXDOMAIN is everywhere or just your network. Then contact support with the domain and when you last changed its DNS — we can see exactly what the authoritative nameservers return.