Hey! For ip range owner lookup, I always use ARIN's WHOIS tool (arin.net). It's free and pretty reliable for North American IPs.
If you're dealing with global ranges, try RIPE (for Europe) or APNIC (Asia-Pacific). Accuracy depends on how well the orgs update their records, but it's usually decent.
Paid tools like IPinfo or WhoisXML API give more details, but tbh, ARIN is my go-to for basic checks.
If you're dealing with global ranges, try RIPE (for Europe) or APNIC (Asia-Pacific). Accuracy depends on how well the orgs update their records, but it's usually decent.
Paid tools like IPinfo or WhoisXML API give more details, but tbh, ARIN is my go-to for basic checks.