DNS Lookup
Query all DNS record types for any domain instantly.
DNS Lookup by Domain
DNS lookup queries authoritative nameservers to return all DNS records for a domain — A, AAAA, MX, TXT, NS, CNAME, SOA, and more — in real time without caching.
DNS records are the building blocks of the internet. A records map domains to IPv4 addresses. AAAA records map to IPv6. MX records route email to the correct mail servers. TXT records carry SPF and DKIM authentication policies. NS records delegate authority to specific nameservers. Our DNS Lookup tool queries authoritative nameservers directly, bypassing local and ISP caches, to give you accurate live results for any domain.
What is a DNS Lookup?
A DNS lookup queries the Domain Name System to translate a domain name into its associated records, revealing the IP addresses, mail servers, and configuration policies tied to that domain.
When you perform a DNS lookup, resolvers traverse a hierarchy from root servers → TLD servers → authoritative nameservers to return the requested records. Each record has a TTL (Time To Live) that controls caching duration. Our tool queries authoritative nameservers directly to return the most current data. This is useful for verifying DNS changes, troubleshooting propagation issues, and auditing domain configuration.
TTL and DNS Propagation
TTL (Time To Live) is the number of seconds a DNS record is cached by resolvers. Lowering TTL before making changes reduces propagation time from 24–48 hours to minutes.
Every DNS record includes a TTL value. A TTL of 300 means resolvers refresh the record every 5 minutes; 86400 means once per day. When you change DNS records, old values persist in caches until their TTL expires. To speed up migrations, lower TTL to 300 at least 48 hours before making changes. After the change is confirmed, restore the original TTL. Our tool shows the current TTL for each record so you can plan changes accurately.
DNS Records for Email Authentication
SPF, DKIM, and DMARC are TXT records that authenticate email senders and tell receiving servers how to handle messages that fail authentication checks.
SPF (TXT record at the root domain) lists IP addresses authorized to send email. DKIM (TXT record at a _domainkey selector) provides a public key for message signature validation. DMARC (TXT record at _dmarc) instructs receiving servers on how to handle SPF/DKIM failures — quarantine, reject, or allow. Checking these records with a DNS Lookup is the first diagnostic step when email lands in spam or is rejected.
Verify DNS propagation and audit domain configuration for any domain instantly.
Perform a DNS lookup nowUse Cases
SysAdmins use DNS Lookup to verify record propagation after changes. DevOps engineers use it to confirm CDN and load balancer configurations. Security teams use it to audit SPF, DKIM, and DMARC policies. Developers use it to debug API endpoint resolution and staging vs production discrepancies.