Our IP address ranges API will return a list of all of the IP addresses ranges assigned to or operated by a company, identified by the provided domain name. So, you provide a domain name, and we return all of the IP address ranges in CIDR format that belong to that company.

This API is currently only available as part of our enterprise plan. Contact us if you're interested in a trial or demo.

curl ipinfo.io/ranges/comcast.net?token=$TOKEN
{
  "domain": "comcast.net",
  "num_ranges": "37330",
  "ranges": [
    "23.24.240.0/29",
    "23.24.240.64/29",
    "23.24.240.128/28",
    "23.24.240.152/29",
    "23.24.240.168/29",
    "23.24.240.192/29",
    "23.24.240.208/29",
    "23.24.241.40/29",
    "23.24.241.72/29",
    "23.24.241.96/29",
    "23.24.241.112/28",
    "23.24.241.136/29",
    "23.24.241.168/29",
    "23.24.241.184/29",
    ...
   ]
}