Network Tools
Free tools to check your network and internet connection
What Is My IP Address?
Find your public IP address, location, and ISP information instantly.
DNS Lookup
Query DNS records for any domain — supports A, AAAA, MX, TXT, NS, CNAME and SOA.
HTTP Status Checker
Check HTTP status codes, follow redirect chains, and inspect response headers for any URL.
Whois Lookup
Look up domain registration info — registrar, creation date, expiry, and nameservers.
SSL Certificate Checker
Check if an SSL certificate is valid, when it expires, and who issued it.
IP Blacklist Checker
Check if an IP address is blacklisted on Spamhaus, SpamCop, Barracuda, and other major DNS blocklists.
Domain & Email Blacklist Checker
Check if a domain or email address is flagged on Spamhaus DBL, SURBL, URIBL, and other domain blocklists.
Port Checker
Test whether a TCP port is open or closed on any server or IP address.
What these tools help with
- Confirm whether a website, DNS record, SSL certificate, or TCP port is failing before you blame your own connection.
- Check domain ownership, blacklist status, and public IP details when email delivery or access to a service suddenly breaks.
- Pair these checks with live outage pages to separate local network problems from service-wide incidents.
Suggested troubleshooting flow
- 1Start with HTTP Status Checker to see whether the URL responds and where redirects end.
- 2Use DNS Lookup and SSL Certificate Checker when the site fails to resolve or browsers show certificate warnings.
- 3Check IP or domain blacklists if mail, signups, or API calls are being rejected unexpectedly.