IP Lookup
Find IP location, ASN/ISP, and reverse DNS (PTR) details.
Not available yet
Free web tools
Domains & DNS tools.
Inspect domain records, check DNS changes and understand your configuration.
Choose your next check.
Find the tool that matches your task.
DNS Lookup
Query DNS records (A, AAAA, MX, TXT, CNAME, NS) for any domain.
Open toolDNS Health Check
Check DNS configuration health and verify essential records.
Open toolDNS Propagation Checker
Compare DNS answers from multiple public resolvers.
Open toolWHOIS Lookup
Look up domain registration information and WHOIS records.
Open toolReverse DNS Lookup
Check PTR records and compare them with forward DNS.
Open toolWhich tool do you need?
Find a tool based on what you want to do.
Check a DNS record
Look up A, AAAA, MX, TXT, CNAME or NS records for your domain.
DNS LookupReview a recent change
See how your changes are propagating across different DNS resolvers.
DNS Propagation CheckerInvestigate configuration issues
Check for common DNS problems and misconfigurations.
DNS Health CheckLearn the basics
Understand your DNS setup.
Use these tools to inspect records and compare answers before making changes.
Browse all toolsWhat are DNS tools?
Online utilities that query and display DNS records for a domain or IP. They can show A, AAAA, MX, TXT, CNAME and NS records, compare resolver answers, check a PTR record, review common configuration issues, and look up public WHOIS details.
When should you check DNS records?
Check when you point a domain, change nameservers, migrate a site or mailbox, troubleshoot email records, see a connection error, confirm a change has spread, or verify reverse DNS for a mail server.
Which check does what?
- DNS Lookup queries A, AAAA, MX, TXT, CNAME, NS and related types.
- DNS Propagation compares public resolvers.
- Reverse DNS checks PTR and forward-confirmed reverse DNS.
- DNS Health Check reviews missing or conflicting records.
- WHOIS Lookup shows registration, expiry, registrar and nameservers when the registry returns them.
How long does DNS propagation take?
Usually a few minutes to 24–48 hours, sometimes up to 72 hours. It depends on TTL and how quickly caches expire. A lower TTL before a change can make the update show up sooner.
What is reverse DNS?
Reverse DNS maps an IP to a hostname with a PTR record. Forward-confirmed reverse DNS means that hostname resolves back to the same IP. Reverse DNS Lookup shows the PTR and the forward check.
What is a DNS A record?
An A record points a name to an IPv4 address. An AAAA record does the same for IPv6.
Why is my domain not resolving?
Common causes are nameservers that have not updated, a missing A or AAAA record, a delay while caches expire, or a resolver that cannot reach the zone. DNS Lookup and DNS Propagation Checker show what resolvers return.
What does TTL mean in DNS?
TTL is how many seconds a resolver may cache the answer. A lower TTL updates sooner. A higher TTL reduces query load and keeps the old answer longer.
How do I check SPF or DMARC records?
They are stored in TXT records. DNS Lookup can show TXT, including _dmarc. SPF Checker and DMARC Checker read those records directly.
Need help with your setup?
Talk to our team about your domain or hosting configuration.