SOA Record Lookup
Find Start of Authority records for DNS zones
SOA records define the authoritative information about a DNS zone, including the primary nameserver and zone parameters.
Domain Lookup
Enter a domain name to find its SOA record
What are SOA Records?
SOA (Start of Authority) records define the authoritative information about a DNS zone. Every DNS zone must have exactly one SOA record that specifies the primary nameserver and various timing parameters for the zone.
SOA Record Components:
- Primary Nameserver: The authoritative nameserver for the zone
- Admin Email: Email address of the zone administrator (with @ replaced by .)
- Serial Number: Version number of the zone data (usually YYYYMMDDNN format)
- Refresh: How often secondary nameservers check for updates
- Retry: How long to wait before retrying failed zone transfers
- Expire: When secondary nameservers stop answering queries
- Minimum TTL: Default TTL for records in the zone
Purpose of SOA Records:
- Define zone authority and ownership
- Control zone transfer timing between nameservers
- Specify contact information for zone administration
- Set default caching behavior for zone records
Related Tools
MX Lookup
Check mail servers
Blacklist Checker
Check IP reputation
DNS Lookup
DNS record queries
SPF Checker
Validate SPF records
DMARC Analyzer
Analyze DMARC policies
Header Analyzer
Analyze email headers
DKIM Checker
Verify DKIM signatures
WHOIS Lookup
Domain registration info
SMTP Test
Test SMTP connectivity
SSL Certificate
Check SSL certificates
DNS Propagation
Check DNS propagation
Ping Test
Test network connectivity
Traceroute
Trace network path
Subnet Calculator
Calculate IP subnets
What Is My IP
Check your IP address
Need Help?
Our tools are designed to be intuitive, but if you need assistance, we're here to help.
About Our Tools
Professional-grade email and DNS diagnostic tools trusted by IT professionals worldwide.
Free to UseNo RegistrationReal-time Results