About The IP Lookup Tool

The IP Lookup Tool resolves an IP address, hostname, or URL and returns the addresses found, IP version, public/private scope, reverse DNS when available, and optional geo/network enrichment for public IP addresses. It is useful for checking where a hostname points, reviewing an IP before allowlisting, and gathering quick context for network troubleshooting.

This tool uses a server-side lookup endpoint because DNS and reverse-DNS checks cannot be completed reliably from browser-only JavaScript. Use public targets you are allowed to inspect, and avoid entering private internal hosts or secret-only endpoints.

How to Look Up an IP or Hostname Online

1. Enter an IPv4 address, IPv6 address, hostname, or full URL.
2. Click Lookup.
3. Review the resolved IPs, reverse DNS, scope, and optional geo/network fields.
4. Open Show more options if you need JSON output or want to disable geo/network enrichment.
5. Copy the output for tickets, incident notes, firewall reviews, or documentation.

Choosing Options Correctly

Output mode:
Use readable text for quick human review. Use JSON when you need structured output for notes, scripts, or a support workflow.

Geo/network enrichment:
Leave it on when you want ASN, ISP, organization, country, and related public-IP context. Turn it off when you only need resolution and reverse-DNS information.

Common Use Cases

• Resolving a hostname before updating DNS, firewall, or API allowlist rules.
• Checking whether a URL points to the IP range you expect.
• Collecting reverse-DNS and public network context for incident notes.
• Comparing public versus private or reserved IP behavior.

Quick FAQ

Why is geo information sometimes missing?
IP geolocation depends on public databases, and some ranges have incomplete, stale, private, or carrier-grade NAT information.

Can I use a full URL?
Use an IP address or hostname as requested by the tool. Full URLs may need to be reduced to the host first.

Is this a replacement for full network diagnostics?
No. It is a quick lookup, not traceroute, packet capture, ASN research, or authoritative abuse investigation.

Does the lookup contact a service?
Yes. IP or host enrichment requires a lookup request, so do not submit private internal names or sensitive targets.