.pa.us domains list

What is .pa.us TLD

The .pa.us TLD denotes the Pennsylvania locality space within the United States country-code domain, structured as a geographic second-level under .us. Registrations typically appear at the third level (for example, municipality or agency labels before .pa.us), aligning names to civic jurisdictions. Eligibility for .pa.us domains has historically centered on government entities, public schools, libraries, and related community institutions operating in Pennsylvania, making it distinct from open commercial namespaces. In our mapping, .pa.us websites display stable, long-lived hostnames, reflecting conservative change cycles and standardized naming conventions across counties and townships. This structure aids discoverability of official information assets while constraining misuse through place-based requirements. For researchers, we surface relationships between subdomains, services, and operators across the state. Explore .pa.us domain datasets from webatla today.

History and key features of .pa.us TLD

Within the broader .us framework established in the mid-1980s, the .pa.us space emerged as part of the nationwide locality hierarchy, pairing geographic labels with administrative layers. Exact launch milestones are unevenly documented, but the model emphasizes authenticity, jurisdictional clarity, and consistent naming. Key features include third-level addressing, locality and nexus criteria, and usage dominated by public bodies. In our longitudinal crawls, .pa.us domains often resolve a mix of web, mail, and service endpoints, while many state-level services elsewhere consolidate under .gov. For analysts, .pa.us websites surface continuity patterns, legacy hosts, and procurement fingerprints useful for risk and inventory assessments. These characteristics make the namespace methodical rather than expansive. Review comprehensive .pa.us domain datasets from webatla.

Why and who choose the .pa.us domain

Organizations choose the .pa.us domain when they need unambiguous Pennsylvania locality signaling and alignment with public-sector norms. Typical registrants include municipalities, counties, townships, boroughs, school districts, public libraries, and allied civic programs with on-the-ground presence. For these users, .pa.us domains reinforce trust, reduce namespace collisions, and enable structured delegations to departments and projects. In our datasets, .pa.us websites frequently reflect conservative change management, stable DNS, and long operational lifecycles—traits beneficial for service continuity and archiving. The trade-off is less branding flexibility compared with open generics, but clearer governance provenance. We help map interconnections, certificate reuse, and hosting shifts that illuminate operational posture. Start exploring .pa.us domain datasets from webatla.