I apologize for the broad question. But I have a list of IP addresses, and would like to connect them to the companies they came from.
I'm not interested in identifying personal IP address information (probably not even possible) but I figure there must be a way to identify if the IP address is associated with a large corporation.
Whois.net usually only gives the ISP name, not the company name.
Thank you
The http://ipinfo.io API (my own service) returns the company name as the org field:
$ curl http://ipinfo.io/198.252.206.16
{
"ip": "198.252.206.16",
"hostname": "stackoverflow.com",
"city": null,
"region": null,
"country": "US",
"loc": "38.0000,-97.0000",
"org": "AS25791 Stack Exchange, Inc."
}
You can get just that field by adding /org to the URL:
$ curl http://ipinfo.io/198.252.206.16/org
AS25791 Stack Exchange, Inc.
You can combine this with some other commands to do a bulk lookup of all of your IPs and see what company they belong to:
$ cat ips.txt | xargs -I% curl -s http://ipinfo.io/%/org | paste ips.txt -
198.252.206.16 AS25791 Stack Exchange, Inc.
173.252.110.27 AS32934 Facebook, Inc.
74.125.239.132 AS15169 Google Inc.
206.190.36.45 AS36647 Yahoo
You can find out more details about the API at http://ipinfo.io/developers.