© 2026 Hedgehog Software, LLC

TwitterGitHubDiscord
More
CommunitiesDocsAboutTermsPrivacy
Search
Star
Setup for Free
SupabaseS
Supabase•6mo ago•
27 replies
TheMaster

Unable to connect to Supabase project - DNS resolution failure for project URL

I'm unable to connect to my Supabase project from a Next.js 15 application. Till yesterday, i was able to connect from my nextjs app but today, the domain cannot be resolved.
Issue details:

When attempting to authenticate using supabase.auth.signInWithPassword(), I receive "Failed to fetch" and "Connect Timeout Error" (code: UND_ERR_CONNECT_TIMEOUT)
DNS lookup fails: Running curl https://[Project_URL] .supabase.co returns "Could not resolve host: jzlddonygtywhhrupgzz.supabase.co"

nslookup also cannot resolve the domain
The domain appears to not exist on the internet despite being shown in my project's API settings

Environment:

Next.js 15.5.2 with App Router
@supabase/ssr (0.7.0) and @supabase/supabase-js packages
Project URL and anon key are correctly set in environment variables (without quotes)
Testing from macOS, no VPN or proxy

I've verified:

The URL exactly matches what's shown in Settings → API → Project URL
The project appears active in the dashboard (no pause warnings)
Network connectivity is working (other APIs accessible)
Same error occurs from multiple network connections

Could you please tell me what is the issue and why a sudden block to my app? The project exists in my dashboard but the domain cannot be reached from the internet. This appears to be a DNS/infrastructure issue rather than a code problem.
Supabase banner
SupabaseJoin
Supabase gives you the tools, documentation, and community that makes managing databases, authentication, and backend infrastructure a lot less overwhelming.
45,816Members
Resources

Similar Threads

Was this page helpful?
Recent Announcements

Similar Threads

Unable to connect Supabase to Vercel project
SupabaseSSupabase / help-and-questions
6mo ago
Set url for supabase project
SupabaseSSupabase / help-and-questions
4y ago
Unable to connect to Supabase
SupabaseSSupabase / help-and-questions
5mo ago
Unable to connect to remote supabase project via CLI
SupabaseSSupabase / help-and-questions
4mo ago