The Ultimate Domain Library
The Ultimate Domain Library links virtually every domain an organization owns into a single family under one Ultimate Domain, the open-source match key that connects parent, subsidiary, and brand assets across 28 million domains.
Most organizations are not one domain. A single company routinely operates dozens to thousands of websites across subsidiaries, acquired brands, product lines, regional entities, and campaign properties. When those assets are not linked, exposure is fragmented: the same customer looks like ten unrelated records, concentration risk goes undetected, and marketing and risk teams work from an incomplete picture. The Ultimate Domain Library resolves that fragmentation. Profound Networks collects dozens of Internet infrastructure signals to group related domains into a family, then designates the Ultimate Domain, the top domain in the hierarchy that serves as the unique identifier and match key for the entire organization. Confidence rises as multiple overlapping signals agree. Critically, the Ultimate Domain does not require a physical address or a legal registration. Millions of companies own brands with real websites, real employees, and real revenue but no discernible location or registry entry, which makes them invisible to traditional hierarchy sources built on legal entity data. Domain is not an attribute; it is a primary key, and it works globally without licensing restrictions. This produces granularity at the individual domain level rather than assigning one headcount to every entity in a family. Tata's Ultimate eCount of 1,051,525 tracks closely to its reported 1,028,000 employees, while still sizing each child domain separately. Applications include KYB and beneficial-ownership context, exposure and concentration analysis across a portfolio, deduplication and householding at the MDM layer, website visitor and inbound lead resolution to a parent organization, and account-based targeting at global scale. Available as batch file or API, refreshed quarterly.Free trial and starter packMore information coming soon.