Help / DNS lookup
DNS lookup
Looks up DNS records for a domain (A, AAAA, MX, TXT, NS, CAA and more), or does a reverse lookup for an IP address, through Cloudflare’s 1.1.1.1.
How to use it
- Type a domain (or paste a URL), or an IP address for a reverse lookup.
- Leave the type on ALL to see the common record types at once, or pick one.
- Press Look up.
Reading the results
- A / AAAA
- IPv4 / IPv6 addresses for the name.
- CNAME
- An alias: this name points to another name.
- MX
- Mail servers for the domain; lower number = higher priority.
- TXT
- Free text, used for SPF, site verification and more.
- NS / SOA
- The domain’s nameservers / its zone’s settings and serial number.
- CAA
- Which certificate authorities may issue certificates for the domain.
- TTL
- How many seconds resolvers may cache the answer.
- NXDOMAIN
- The name doesn’t exist.
- DNSSEC validated
- The answer’s signatures checked out at the resolver.
Examples
- cloudflare.com All common types
- gmail.com MX, SPF and CAA
- 1.1.1.1 Reverse lookup
From the command line
curl "https://tools.nexayori.com/dns?q=cloudflare.com" curl "https://tools.nexayori.com/dns?q=cloudflare.com&format=json"
| q | Domain, URL or IP address |
| type | ALL (default), A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, SRV, PTR, HTTPS, DS, DNSKEY |
| format | text, json or html |
Questions
I changed a record but still see the old value.
Resolvers cache answers until the TTL runs out. Use DNS propagation to see which resolvers have the new value.
Why do A records differ each time?
Large sites rotate addresses or answer by location. That’s normal.
Limitations
- Answers come from one resolver (1.1.1.1). To ask the domain’s own nameservers, use Nameserver check.