Verify a web host or CDN change.
example.com — A
A 93.184.216.34
Enter a domain or hostname, not a complete URL; protocol, path and query are removed during normalization.
Query common DNS record types for one domain or hostname.
Look up DNS records such as A, AAAA, CNAME, MX, TXT, and NS.
This online DNS lookup queries the selected record type for a hostname and returns the current resolver answer, TTL and priority when available.
example.com — A
A 93.184.216.34
Enter a domain or hostname, not a complete URL; protocol, path and query are removed during normalization.
www.example.com — CNAME
MX 10 mail.example.com
TTL controls caching. Different resolvers can temporarily return different answers.
example.com — MX / TXT
TXT v=spf1 …
Enter a domain or hostname, not a complete URL; protocol, path and query are removed during normalization.
This lookup sends only the entered domain and selected record type to the LumaTool API. The result reflects the resolver used by that request, not a global propagation test.
Verify a web host or CDN change.
Check mail routing and SPF records.
Collect resolver evidence for a support ticket.
example.com — A www.example.com — CNAME example.com — MX / TXT
Enter a domain or hostname, not a complete URL; protocol, path and query are removed during normalization. TTL controls caching. Different resolvers can temporarily return different answers.
This lookup sends only the entered domain and selected record type to the LumaTool API. The result reflects the resolver used by that request, not a global propagation test.
Choose only the options needed to turn a domain and record type into the DNS records; the defaults preserve the least surprising behavior.
Review validation messages and compare a representative sample before using the result in production.
Yes. The workspace and result controls adapt to desktop and mobile browsers.
Looking up the root domain when the issue affects www. Calling one resolver result a global propagation test.
This lookup sends only the entered domain and selected record type to the LumaTool API. The result reflects the resolver used by that request, not a global propagation test.
Check public IP, location, ISP, ASN, browser, and network details.
Use Now PCheck HTTP reachability and latency without running shell ping commands.
Use Now HInspect response headers, cache policy, redirects, and security headers.
Use Now UParse browser, operating system, device, rendering engine, and crawler signals.
Use Now