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Network Utils

Network utilities. IP address tools, subnet calculators, DNS lookups, and connectivity diagnostics — all client-side.

Bandwidth Calculator
Calculate file transfer time, required bandwidth, or data amount. Enter any two values to compute the third.
CIDR
Calculate subnet information from CIDR notation. Free online tool for network engineers and administrators.
DNS Propagation
Query DNS records (A, AAAA, CNAME, MX, TXT, NS) from multiple global resolvers to verify propagation status.
Domain to IP
Resolve any domain name to its IP address. Look up A, AAAA, and CNAME records instantly.
Geo IP Locate
Look up the geographic location of any IP address. See country, city, ISP, coordinates, and timezone on an interactive map.
HTTP Headers Checker
Inspect HTTP response headers for any URL including security headers, caching, CORS, content type, and server information.
IP Allowlist / Blocklist
generate firewall rules to allow or block IPs for Nginx, Apache, iptables, UFW, nftables, AWS Security Groups, and Cloudflare.
MAC Address Generator
Generate random valid MAC addresses in multiple formats for testing, development, and network configuration.
MAC Lookup
Identify the manufacturer/vendor of any network device from its MAC address.
My IP
See your public IP address instantly, along with ISP, location, and connection details.
Open Port Checker
Test if specific TCP ports are open or closed on any host. Scan common ports like HTTP (80), HTTPS (443), SSH (22), and more from your browser.
Ping Traceroute
Visualize network paths, hop latency, packet loss, and route topology. Analyze network performance with interactive diagrams.
Port Checker
Search common network ports by number or service name. Identify TCP/UDP ports, protocols, and security status for any port number.
Reverse DNS
Look up the hostname associated with any IP address. Verify PTR records and reverse DNS configuration.
SSL/TLS Checker
Free online SSL/TLS certificate checker. Inspect certificate details, expiration dates, issuer information, SANs, and chain of trust for any domain.
Subnet Calculator
Calculate network address, broadcast, host range, subnet mask, wildcard mask, and split subnets. Supports CIDR notation and visual subnet maps.
Website Speed Test
Measure page load time, resource sizes, request counts, and performance scores. Analyze DOM, CSS, JavaScript, images, and fonts for any URL.
Whois Lookup
Find domain registration details including registrar, creation date, expiration date, name servers, and registrant information.

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