How to find out hosting provider from domain name?

Question

I am looking for a reliable service that has a good database of the hosting providers vs domain names. I guess some of the domains that are privately hosted cannot be resolved to a definite hosting provider (maybe just to ISP).

I have used webhosting.info (their power whois and advanced whois) which used to give hosting information(not sure) earlier but not anymore. I looked at domaintools.com but couldnt find anything like that in their tools.

I guess I could do a reverse IP on a domain and go to arin.net and get the org name. But looking for a free (or paid service) that can do bulk lookups or any reverse dns tools that you recommend or use.

Answer 1

If you have access to a Linux machine, you can use jwhois on the IP address. So you'd need to resolve the hostname to IP address (which you could do using ping, if you wanted to use a shell-script) and then jwhois the IP address, which will (usually) automatically look it up in ARIN / APNIC / RIPE as appropriate. It's not 100% accurate, but it almost always works.

Alternatively, you can buy access to the GeoIP database.

Answer 2

I go to www.domaintools.com and enter the domain name in the Whois lookup.

When their Whois record shows up, look at the Name Server. It tells you who the hosting company is, and as an added bonus, also tells you the number of domains at that host.

I don't know if they have any bulk services though. I've only needed one at a time lookups.