Network tools
Free Network Tools for Practical Troubleshooting
Use this collection when a domain, website, server, certificate, DNS record, or IP address needs a quick technical check.
IP Helper Kit groups IP and network utilities into a simple toolkit for routine diagnostics. You can check public IP details, inspect DNS records, parse user agents, review HTTP headers, calculate CIDR ranges, and look for common configuration signals without creating an account.
The tools are intended for fast investigation and documentation. They are useful when you are preparing a support ticket, checking a new website launch, reviewing DNS changes, confirming SSL details, or collecting basic network information before escalating an issue to a hosting provider.
Network results can vary by location, provider, cache, firewall, and routing. Use these tools as a helpful first step, then confirm business-critical findings with your DNS host, registrar, hosting company, or security team.
Network and DNS tools
Show your public IP information and browser network details.
IP Tools IPv4 LookupValidate an IPv4 address and show useful decimal, binary, and private range details.
IP Tools IPv6 LookupValidate an IPv6 address and identify common IPv6 address patterns.
DNS Tools DNS LookupPrepare DNS record checks for a domain and common record types.
DNS Tools Reverse DNS LookupConvert an IP address into the reverse DNS lookup name format.
Network Tools Whois LookupPrepare a domain Whois query and extract the domain name from a URL.
Network Tools Ping TestEstimate ping command syntax and explain what ping results mean.
Network Tools Traceroute ToolGenerate traceroute commands and explain route hop checks.
Network Tools Port CheckerCheck whether a port number is valid and identify common service ports.
Website Tools HTTP Header CheckerParse pasted HTTP response headers and highlight common security and cache headers.
Website Tools SSL Certificate CheckerPrepare SSL checks and review common certificate fields to inspect.
Website Tools User Agent ParserParse a browser user agent string into browser, operating system, and device clues.
IP Tools IP Range CalculatorCalculate usable IPv4 range details from a start and end IP address.
IP Tools CIDR CalculatorCalculate IPv4 CIDR network address, broadcast address, and usable host range.
IP Tools Subnet CalculatorCalculate subnet mask, wildcard mask, and host capacity from prefix length.
IP Tools Geo IP LookupPrepare IP geolocation checks and explain what Geo IP data can and cannot confirm.
DNS Tools MX Record LookupPrepare MX record checks for email routing and domain setup review.
DNS Tools NS Record LookupPrepare NS record checks to review authoritative nameservers for a domain.
DNS Tools TXT Record LookupPrepare TXT record checks for SPF, DKIM, DMARC, and verification records.
Security Tools Blacklist CheckerPrepare IP or domain blacklist checks and explain common DNSBL result meanings.
Network tools FAQ
Why do DNS results differ between providers?
DNS caching, propagation, resolver behavior, and record TTL values can cause different providers to show different results for a period of time.
Can I use these tools before contacting support?
Yes. The results can help you describe the issue more clearly when opening a ticket with your host, DNS provider, or registrar.
Are ping and traceroute results final proof of an outage?
No. Firewalls, ICMP rules, routing changes, and provider filtering can affect results, so confirm outages from more than one source.
Should I use these checks for security decisions?
Use them as supporting evidence only. Security decisions need full context, authorized testing, and professional review.
Related tools
Prepare DNS record checks for a domain and common record types.
Website Tools HTTP Header CheckerParse pasted HTTP response headers and highlight common security and cache headers.
Website Tools SSL Certificate CheckerPrepare SSL checks and review common certificate fields to inspect.
Security Tools Blacklist CheckerPrepare IP or domain blacklist checks and explain common DNSBL result meanings.