About DNS Lookup
DNS lookup tool queries domain DNS records (A/AAAA/CNAME/MX/TXT/NS etc) online, essential for diagnosing domain resolution issues, email config validation, DNS migration checks.
How to Use
- Enter domain name
- Choose record type (A/MX/CNAME etc)
- View DNS resolution results
- Query multiple record types for comparison
Frequently Asked Questions
- A record vs CNAME difference?
- A record points directly to IP address (e.g., 1.2.3.4). CNAME is alias pointing to another domain (e.g., cdn.example.com). Root domain (@) cannot use CNAME, subdomains can use either.
- What is MX record?
- MX (Mail Exchange) record specifies mail server address for receiving emails to that domain. Number indicates priority, lower = higher priority. Enterprise email config requires MX record setup.
- How long for DNS changes to propagate?
- After adding/modifying DNS records, global propagation takes minutes to 48 hours, depending on TTL (Time To Live) value and DNS server cache refresh times worldwide.