Free Online DNS & Network Tools
Everything you need to inspect, debug, and secure your domains — no account required.
DNS Tools
Complete DNS Health Report
Run a full domain health check — DNS, SSL, email security, and blacklists — all in one click.
- All-in-one domain analysis
- SSL, Email, & Blacklist checks
- Traffic light scoring
DNS Lookup
Query DNS records for any domain using global resolvers.
- Global DNS records
- Multiple record types
DNS Propagation
Check how far your DNS changes have spread around the world.
- 37 global servers
- Visual map
- Real-time status
NS Lookup
Find the authoritative nameservers responsible for a domain.
- Nameserver list
- Routing details
CNAME Lookup
Trace canonical name aliases to their final destination.
- Trace CNAME chains
- Final destinations
AAAA Lookup
Retrieve IPv6 address records for any domain.
- IPv6 address records
- Network routing
Email & Security Tools
Email Security Grader
Analyze your SPF and DMARC records and get an instant security grade.
- SPF validation
- DMARC analysis
- Pass/Fail scorecard
MX Lookup
Identify which mail servers are configured to receive email for a domain.
- Mail server list
- Priority routing
TXT Lookup
Retrieve all TXT records, including SPF, DKIM, and DMARC entries.
- SPF/DKIM/DMARC records
- Verification tags
Blacklist Checker
Check if an IP address or domain is listed on major DNS blackhole lists (DNSBLs).
- Spamhaus & Barracuda checks
- IP and Domain scanning
- Email deliverability testing
Website & IP Tools
Website Status Checker
Instantly check whether a website is online or offline and measure its response time.
- Real-time uptime check
- HTTP status codes
- Response time metrics
WHOIS Lookup
Look up domain registration details, ownership, and expiry information.
- Domain registration
- Expiry dates
- Registrar info
IP Lookup
Get geolocation, ASN, and network details for any IP address.
- Geolocation
- ASN details
- Network mapping
Reverse IP Lookup
Resolve an IP address back to its associated hostname via PTR records.
- PTR records
- Hostname resolution
Open Port Checker
Test common network ports on any domain or IP to see what is open or blocked by a firewall.
- Scan common networking ports
- Check firewall status
- Test SSH, FTP, & Database connections
Full SSL Checker
Analyze SSL certificate chains, expiration dates, and SANs.
- Certificate chain analysis
- Expiration & SAN details
- Signature algorithm info
Subdomain Scanner
Uncover active subdomains for any domain in seconds using parallel DNS resolution.
- Parallel DNS resolution
- Wildcard detection
- Common subdomain wordlist