.ac.jp domains list

What is .ac.jp TLD

.ac.jp is the academic second-level space within Japan’s country-code .jp, reserved for accredited higher education and research institutions. In practice, .ac.jp domains and .ac.jp websites signal official university, college, and institute presences, helping users distinguish authoritative academic sources from commercial or personal publishing. As a global domain intelligence platform, we track this namespace to understand institutional footprints, subdomain structures, and service exposure across libraries, laboratories, and administrative units. Eligibility is tightly controlled by local policy, producing comparatively stable ownership patterns and long-lived hosts that support reliable citation and institutional trust. For researchers, policymakers, and vendors, this distinct namespace enables precise discovery and segmentation in our datasets. Explore .ac.jp domain datasets from webatla today.

History and key features of .ac.jp TLD

Introduced early in the structured hierarchy of .jp, the .ac.jp space has consistently served Japan’s academic sector with clear eligibility checks and conservative naming practices. We observe that .ac.jp domains and .ac.jp websites typically reflect institutional governance: standardized subdomains for departments, course resources, repositories, and outreach. Restrictive registration and verification reduce impersonation risk and produce stable lifecycles, while operational practices favor predictable DNS management and timely certificate renewal. At the .jp level, modern security capabilities are available, and adoption patterns within academia tend to be steady rather than trend-driven. This combination of policy and practice creates a durable, well-scoped corpus for longitudinal analysis of academic web infrastructure. Explore webatla’s .ac.jp domain datasets now.

Why and who choose the .ac.jp domain

Universities, junior colleges, research institutes, scholarly societies, and academic libraries select .ac.jp to convey verified institutional identity within Japan. For international audiences, .ac.jp domains and .ac.jp websites instantly communicate academic provenance, improving trust around admissions, publications, and grant-related communications. We see adopters prioritizing compliance, consistent branding, and predictable governance—factors that support multi-stakeholder environments spanning faculties, labs, and administrative units. While search performance depends on content and technical quality, the namespace sets clear expectations about authenticity and stewardship. Procurement teams and external partners benefit from the clarity of a bounded, policy-driven domain space when integrating services or exchanging data. Start exploring webatla’s curated .ac.jp domain datasets.