The Company dataset identifies the organization that uses each IP range: the company name, its website domain, the AS number announcing the range and a classification of the network.
Unlike WHOIS-based sources that only reveal the registrant, it reflects the actual user of the address space, making it the dataset of choice for account-based marketing, B2B analytics and traffic attribution.
The data
Inside the file
One record per row, a commented header line first. This is what ipregistry-company.csv looks like:
# ip_start,ip_end,asn,name,domain,type173.12.99.32,173.12.99.39,7922,SYSTEMS TAND S ROOFING,comcastbusiness.net,BUSINESS89.96.133.195,89.96.133.199,12874,Activenetwork Public Subnet,,ISP185.241.144.227,185.241.145.6,201602,Dynamic Pool for Customers,,ISP84.33.214.62,84.33.214.62,34081,Incubatec GmbH - SRL,incubatec.com,BUSINESS173.162.165.192,173.162.165.223,7922,QUICK COMPLIANCE,comcastbusiness.net,BUSINESSThe rows above come from the free sample. Every build ships with MD5, SHA-1, SHA-256 and SHA-512 checksums so you can verify downloads.
| Column | Description |
|---|---|
ip_start | First IP address of the range, IPv4 or IPv6. |
ip_end | Last IP address of the range, inclusive. |
asn | Autonomous System Number announcing the range. |
name | Name of the company or organization using the range. |
domain | Website domain of the company. |
type | Network classification: business, education, government, hosting, or isp. |
The MMDB variant carries the same data in a memory-mapped binary tree, compatible with the standard MMDB reader libraries available for every major programming language.
Downloads
Available formats
| Format | Description | Size |
|---|---|---|
| CSV | Plain text, one range per line. Import into any database or data warehouse. | 1.3 GB |
| CSV (zipped) | Same file compressed for faster downloads and cheaper storage. | 201 MB |
| MMDB | Binary format for instant lookups with standard MMDB readers. | 432 MB |
Use cases
What you can build
- Identify companies visiting your website for account-based marketing
- Attribute API and application traffic to organizations
- Separate residential, hosting and corporate traffic in analytics
- Prioritize B2B leads by resolving visitor IPs to firmographics
Related use case: Web personalization
Datasets are available with an Ipregistry subscription and download from your dashboard, or over a stable URL for automated syncs. Prefer live data? The same intelligence is served by the Ipregistry API.