Two Domain Industry Firms Make the Inc. 5000 List; Identity Digital Absent

Atom and Whois API earned places on the Inc. 5000 this year, while Identity Digital did not appear on the list.

The Inc. 5000 is an annual ranking of the fastest-growing private companies in the United States, measured by percentage revenue growth over a three-year period. This year’s list includes representatives from a wide range of industries, including two companies tied to the domain name ecosystem.

Atom: Domain Marketplace and Registrar Continues Strong Performance

Atom, a combined domain marketplace and registrar, secured a spot on the Inc. 5000 for the fifth time. On this year’s list, Atom ranked #1,313, reflecting 268% revenue growth over the three-year evaluation period. That placement marks a significant improvement from last year, when the company ranked #3,274.

Atom’s repeated presence on the Inc. 5000 highlights consistent expansion within the domain sales and registration segment. The company’s jump in ranking suggests accelerated revenue performance relative to peers in the private-company cohort evaluated by Inc. magazine.

Whois API: Steady Inclusion for Domain Data and Security Provider

Whois API, a firm focused on domain information and security services, made the Inc. 5000 for the ninth time. This year the company is listed at #4,682, representing 32% growth during the three-year window used for the ranking. Although Whois API’s position slipped slightly from #4,271 last year, the company’s repeated inclusion underscores its sustained presence and resilience in a competitive market.

Inclusion on the Inc. 5000 for multiple years is often a signal of a company’s ability to maintain steady revenue gains, adapt to market shifts, and continue delivering services that meet customer needs in areas like domain intelligence, registration data, and security-focused offerings.

Identity Digital Not on This Year’s List

Identity Digital, which appeared on last year’s Inc. 5000 at #4,214, is not listed this year. Companies can move on and off the Inc. 5000 for a variety of reasons: changes in revenue growth rates, shifts in company ownership or private status, or strategic decisions that affect how they report or qualify for the ranking. The absence of Identity Digital from this year’s list does not by itself indicate a specific outcome, but it does mark a departure from last year’s publicly reported ranking.

Notable High-Growth Companies Across the List

Outside the domain space, the Inc. 5000 highlights companies that achieved especially rapid growth. Among those cited in this year’s list were email platform Beehiiv, which ranked #19, and coding platform Replit, which placed #24. These placements indicate rapid scaling in their respective markets and reflect broader trends in online services and developer tools.

What the Inc. 5000 Ranking Means

Being included on the Inc. 5000 is a widely recognized achievement for private companies because the list measures percentage revenue growth over a sustained period. For firms in the domain industry, such recognition can signal market traction, customer adoption, and scaling success. Repeated appearances, as seen with Atom and Whois API, suggest long-term momentum, while shifts in ranking from year to year provide insight into changing competitive dynamics.

For readers tracking the domain name sector, the Inc. 5000 offerings provide one lens on which companies are expanding rapidly and which may be experiencing slower growth or strategic changes. Atom’s marked climb and Whois API’s continued presence are noteworthy indicators of ongoing activity within domain marketplaces, registrars, and domain data services.