.il.us domains list

What is .il.us TLD

“.il.us” is the geographic second‑level namespace within the United States country-code domain, reserved primarily for Illinois public-sector naming. In practice, .il.us domains label municipalities, counties, K‑12 school districts, libraries, and other civic bodies, and .il.us websites typically appear as third‑level names (for example, city.il.us or k12.il.us). As a locality space rather than a standalone registry, policy and delegation often flow through state or county managers aligned with .US rules. We see moderate legacy usage alongside shifts to .gov or branded .org/.com. From an intelligence perspective, the namespace signals jurisdiction and service scope, aiding geolocation, trust cues, and compliance mapping. Evaluate adoption, DNS posture, and technology stacks across this Illinois segment with our structured datasets. Explore .il.us domain datasets from webatla today.

History and key features of .il.us TLD

“.il.us” emerged as part of the early U.S. locality hierarchy that organised public institutions beneath the .us country code. Over time, conventions such as city.il.us, county.il.us, k12.il.us, and lib.il.us defined predictable addressing, so .il.us domains could indicate function as well as geography, and .il.us websites could present Illinois‑specific public services. Key features include constrained eligibility (typically government and education), hierarchical subdelegation, and continuity with older infrastructure; security capabilities like DNSSEC depend on upstream and local adoption. Many entities have migrated to .gov or state‑brand domains, but legacy hosts remain active and resolvable. We analyse historical footprints, host churn, and resolver health to quantify risk and persistence across this namespace. Access webatla’s .il.us domain datasets for longitudinal, queryable evidence.

Why and who choose the .il.us domain

“.il.us” suits organisations that must foreground Illinois jurisdiction and public mandate. Municipal governments, county offices, school districts, public libraries, and special districts often retain .il.us domains when continuity, procurement constraints, or legacy systems make changes costly; corresponding .il.us websites can reinforce local trust and search relevance for residents. For SEO, the geographic signal can strengthen entity disambiguation and service discovery, while predictable subdomain taxonomies support programmatic crawling and monitoring. Trade‑offs include mixed UX familiarity compared with .gov and uneven security maturity across subdelegations. We profile issuers, certificate practices, hosting providers, and update cadence to benchmark operational posture against peers in adjacent namespaces. Discover .il.us domain datasets from webatla to compare Illinois public‑sector footprints.