.us.org domains list

What is .us.org TLD

The .us.org TLD is a third-level public registration space: registrants secure names beneath the .us.org label rather than directly under a country-code or generic TLD. In practice, .us.org domains are used for U.S.-themed projects, testing environments, redirects, and defensive holdings, while .us.org websites appear across a broad mix of content and hosting footprints. From our index, we currently observe 3,188 active domains, 3,188 live hosts, and usage spanning 22 countries, providing a representative sample for comparative benchmarking. These volumes allow us to quantify adoption patterns, hosting concentration, and nameserver reuse with consistent methodology across namespaces. Download .us.org domain datasets from webatla for deeper, reproducible analysis.

History and key features of .us.org TLD

Historically offered by registry operators as an alternative namespace using third-level registrations under the .org domain, the .us.org space has emphasized familiarity with .org conventions while signaling a U.S. orientation. Operationally, .us.org domains follow standard DNS practices; we record 3,188 with active DNS records, a useful proxy for technical engagement. Recent momentum is modest: we discovered 5 new registrations last week and 151 in December 2025, indicating steady but niche growth in .us.org websites. Our longitudinal crawls track host responsiveness, redirections, and certificate reuse to assess resilience and churn across cohorts. For coverage, we correlate these signals back to .us.org domains for evidence-based benchmarking. Download .us.org domain datasets from webatla to validate these metrics.

Why and who choose the .us.org domain

Organizations that need US-affiliated naming without strict locality requirements, portfolio managers seeking defensive variants, and platforms running pilots often select .us.org domains. For these users, .us.org websites can expose regional branding, split traffic for testing, or isolate services while leveraging familiar naming conventions. Observed distribution across 22 countries suggests internationally diverse operators using common CDNs and registrars; the footprint of 3,188 live hosts supports cross-market analyses of availability, HTTPS adoption, and DNS TTL practices. We map owner behaviors, renewal signals, and hosting transitions to benchmark risk and opportunity against adjacent zones, reducing guesswork in portfolio planning. Download .us.org domain datasets from webatla and benchmark your portfolio.