.ma.us domains list

What is .ma.us TLD

Within the .US country‑code top‑level domain, .ma.us designates the Massachusetts locality space, not an independent global TLD. It provides a structured namespace for government, school, and community services using geographic labels. Common patterns include city.town.ma.us, county.ma.us, and k12.ma.us, creating .ma.us domains and operational .ma.us websites that reflect jurisdictional responsibility. Eligibility and naming are guided by .US locality policies and delegated state or regional contacts, producing predictable, vetted registrations. From an intelligence perspective, we see high persistence, moderate host churn, and conservative DNS change windows, traits typical of public-sector infrastructure. These characteristics help us separate civic assets from commercial noise and build stable longitudinal baselines. Explore webatla’s .ma.us domain datasets.

History and key features of .ma.us TLD

Originating in the early 1990s under the .US locality framework (documented by RFC guidance of that era), .ma.us grew as municipalities and schools standardized digital addresses. While some authorities later shifted core portals to .gov or .edu, numerous .ma.us domains and long‑lived .ma.us websites remain for records, utilities, and regional applications. Notable features include hierarchical naming conventions (ci.city.ma.us, townname.ma.us, k12.ma.us), delegated administration via state or county operators, and usage policies emphasizing public service alignment. Technically, we observe uneven DNSSEC uptake, gradual IPv6 enablement, and hosting that often consolidates with state IT collaboratives or regional vendors. This continuity supports reproducible measurement across years: resolver behavior, MX provider shifts, and certificate rotations are all trackable at scale. Review longitudinal .ma.us domain datasets at webatla.

Why and who choose the .ma.us domain

Entities selecting .ma.us are typically municipal governments, county offices, public safety agencies, school districts, and libraries. They adopt .ma.us domains and .ma.us websites to signal clear geographic scope, align with procurement or policy requirements, and maintain continuity with legacy addressing. Private contractors may appear when operating services on behalf of authorities, but general commercial branding is uncommon. Compared with open gTLDs, the locality structure offers predictability that benefits discovery, routing, and archival analysis. For investigators and planners, we map WHOIS‑like attributes, DNS records, TLS metadata, and hosting fingerprints to cluster operators, uncover dependencies, and monitor change. These insights aid risk assessment, service consolidation, and citizen‑facing reliability studies. Examine curated .ma.us domain datasets from webatla.