DNS

IP Address Info

Validate IPv4/IPv6. Check private, loopback. 100% client-side.

No geolocation. For geo/ASN use IPinfo or similar.

How to use

  1. Enter a domain, URL, or value relevant to IP Address Info.
  2. Run the check and review the output carefully.
  3. Apply recommended fixes, then run the check again to verify.

Common use cases

  • Pre-deployment validation for IP Address Info.
  • Incident triage when security checks fail in production.
  • Periodic security review as part of technical SEO and hardening.

Example inputs

192.168.1.12001:db8::1::1

Common issues and fixes

Invalid IPv4

Must be four octets 0-255. No leading zeros or spaces.

Invalid IPv6

Use hex groups separated by :. :: compresses zeros. Check format.

Private IP in public context

192.168.x.x, 10.x.x.x are private. Use public IP for external services.

Recommended remediation

Validate format before use. Private IPs don't route on internet. Use ip-geolocation for public IP lookup.

FAQ

Is IP Address Info free to use?

Yes. This tool is free and can be used without account registration.

Do you store submitted values?

Only the minimum processing needed for the check. For client-side tools, data stays in your browser.

How should I use these results?

Use the output as a diagnostic baseline, apply fixes in your stack, then re-run the check to confirm remediation.

Related security tools

DNS Lookup

Query DNS records (A, AAAA, MX, TXT, NS, CNAME) for any domain using public DNS API.

CIDR Calculator

IPv4 subnet calculator. Network, broadcast, host range.

Reverse DNS (PTR) Lookup

Look up PTR hostname for an IP. Reverse DNS for IPv4/IPv6. Like HackerTarget.

IP Geolocation Lookup

IP to location, ISP, ASN. Country, city, timezone. Free geolocation.