Networking

Investigate IPs and connectivity

IP lookup, subnetting, ping, traceroute, port checks, WHOIS, and ASN utilities for connectivity troubleshooting.

Networking tools — when to use which

  • Ping vs Traceroute

    Ping tests reachability and round-trip time to the destination. Traceroute shows each hop along the path to locate where latency or loss begins.

  • IP Lookup vs WHOIS vs ASN Lookup

    IP Lookup returns geolocation and network context. WHOIS returns domain registration data. ASN Lookup maps IPs or prefixes to autonomous system operators.

IP Lookup

networking

Look up geolocation and network information for any IPv4 or IPv6 address.

CIDR / Subnet Calculator

networking

Calculate subnet masks, network ranges, broadcast addresses, and host counts.

IPv4 Validator

networking

Validate IPv4 addresses and check if they are public, private, or reserved.

IPv6 Validator

networking

Validate IPv6 addresses and expand compressed notation.

Port Checker

networking

Check if a TCP port is open on a remote host.

Ping

networking

Send ICMP echo requests to test host reachability and latency.

Traceroute

networking

Trace the network path to a destination host.

WHOIS Lookup

networking

Query WHOIS records for domains and IP address blocks.

ASN Lookup

networking

Look up Autonomous System Number details for an IP or ASN.

HTTP Security Headers Checker

networking

Analyze HSTS, CSP, X-Frame-Options, and other security headers for any URL.

Part of Nexabit Network Utilities · How-to guides