0 last week
0 last month
151 active domains
15 domains with DNS records
Domains from 1 countries
151 domains with RDAP and WHOIS records
Includes 10 unique IPs hosting active domains
A metric that estimates network influence and trust, based on the link structure of domains using .co.us TLD
The average PageRank score reflecting the SEO authority of websites with the .co.us TLD
| TLD | Domain | TLD suffix | Country | IP address | Technologies | PR value | Harmonic value | Detected hosts count | DNS last data checked | DNS Status | DNS records | RDAP/WHOIS last data checked | RDAP/WHOIS method | Domain creation date | Domain expiration date | Domain last changed | Registrar | RDAP/WHOIS Record |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us | state.co.us | co.us | United States (US) | 192.70.175.110 | 0.00000443325 | 18,766,980.00 | 2026/01/14 | 1 | {"A": ["192.70.175.110"], "MX": [{"ho... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | ||
| us | douglas.co.us | co.us | United States (US) | 67.135.162.182 | ["Google Analytics"] | 0.00000020494 | 17,898,664.00 | 2026/01/09 | 1 | {"A": ["67.135.162.182"], "MX": [{"ho... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | |
| us | boulder.co.us | co.us | 0.00000015789 | 17,890,842.00 | 2025/12/29 | 0 | 2026/01/08 | WHOIS | 2003/02/06 | 2026/02/06 | 2025/06/18 | US Locality Zone Manager | {"raw_response": ... | |||||
| us | wheatridge.co.us | co.us | 0.00000011402 | 15,079,940.00 | 2026/01/14 | 0 | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/18 | US Locality Zone Manager | {"raw_response": ... | |||||
| us | loveland.co.us | co.us | ["Google Analytics"] | 0.00000010200 | 15,117,013.00 | 2025/12/28 | 0 | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/18 | US Locality Zone Manager | {"raw_response": ... | ||||
| us | grand.co.us | co.us | 0.00000008134 | 15,093,978.00 | 2025/12/28 | 0 | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/18 | US Locality Zone Manager | {"raw_response": ... | |||||
| us | routt.co.us | co.us | 0.00000004966 | 15,137,746.00 | 2025/12/31 | 0 | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/18 | US Locality Zone Manager | {"raw_response": ... | |||||
| us | laplata.co.us | co.us | 0.00000004345 | 15,194,190.00 | 2026/01/12 | 0 | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | |||||
| us | clear-creek.co.us | co.us | United States (US) | 184.105.130.90 | ["Apache HTTP Server"] | 0.00000004199 | 15,149,941.00 | 2026/01/03 | 1 | {"A": ["184.105.130.90"], "NS": ["ns1... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | |
| us | lamar.co.us | co.us | United States (US) | 63.206.44.251 | 0.00000003289 | 15,334,758.00 | 2025/12/28 | 1 | {"A": ["63.206.44.251"], "MX": [{"hos... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | ||
| us | glendale.co.us | co.us | United States (US) | 192.196.0.135 | 0.00000003284 | 15,116,040.00 | 2026/01/09 | 1 | {"A": ["192.196.0.135"], "MX": [{"hos... | 2025/12/31 | WHOIS | 2003/01/30 | 2026/01/29 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | ||
| us | summit.co.us | co.us | United States (US) | 104.21.81.221 | ["Cloudflare"] | 0.00000002919 | 15,086,932.00 | 2026/01/01 | 1 | {"A": ["104.21.81.221", "172.67.191.1... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | |
| us | la-junta.co.us | co.us | United States (US) | 63.206.44.251 | 0.00000001079 | 14,965,013.00 | 2025/12/29 | 1 | {"A": ["63.206.44.251"], "MX": [{"hos... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | ||
| us | ouray.co.us | co.us | ["Google Analytics"] | 0.00000000793 | 14,982,308.00 | 2026/01/01 | 0 | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/18 | US Locality Zone Manager | {"raw_response": ... | ||||
| us | cripple-creek.co.us | co.us | United States (US) | 67.18.38.246 | 0.00000000768 | 14,585,780.00 | 2026/01/09 | 1 | {"A": ["67.18.38.246"], "MX": [{"host... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | ||
| us | golden.co.us | co.us | ["Google Analytics"] | 0.00000000762 | 15,091,743.00 | 2026/01/01 | 0 | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/18 | US Locality Zone Manager | {"raw_response": ... | ||||
| us | commerce-city.co.us | co.us | ["Google Analytics"] | 0.00000000747 | 14,955,795.00 | 2026/01/14 | 0 | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/18 | US Locality Zone Manager | {"raw_response": ... | ||||
| us | rio-blanco.co.us | co.us | ["Google Analytics"] | 0.00000000604 | 14,962,308.00 | 2025/12/28 | 0 | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/18 | US Locality Zone Manager | {"raw_response": ... | ||||
| us | fountain.co.us | co.us | United States (US) | 63.206.44.251 | 0.00000000493 | 14,956,676.00 | 2026/01/11 | 1 | {"A": ["63.206.44.251"], "MX": [{"hos... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | ||
| us | silverton.co.us | co.us | United States (US) | 165.127.10.10 | 0.00000000473 | 14,955,862.00 | 2026/01/12 | 1 | {"A": ["165.127.10.10"], "MX": [{"hos... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | ||
| us | federal-heights.co.us | co.us | United States (US) | 63.206.44.251 | 0.00000000470 | 14,956,821.00 | 2026/01/03 | 1 | {"A": ["63.206.44.251"], "MX": [{"hos... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | ||
| us | bennett.co.us | co.us | United States (US) | 199.87.143.14 | 0.00000000425 | 14,955,578.00 | 2026/01/08 | 1 | {"A": ["199.87.143.14", "165.127.10.1... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | ||
| us | fort-morgan.co.us | co.us | United States (US) | 63.206.44.251 | 0.00000000395 | 9,093,875.00 | 2026/01/06 | 1 | {"A": ["63.206.44.251"], "MX": [{"hos... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | ||
| us | eagle.co.us | co.us | United States (US) | 209.142.141.33 | 0.00000000338 | 8,183,381.50 | 2026/01/08 | 1 | {"A": ["209.142.141.33"], "NS": ["ns-... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... | ||
| us | clifton.co.us | co.us | United States (US) | 63.206.44.251 | 0.00000000000 | 0.00 | 2026/01/05 | 1 | {"A": ["63.206.44.251"], "MX": [{"hos... | 2026/01/06 | WHOIS | 2003/02/05 | 2026/02/04 | 2025/06/17 | US Locality Zone Manager | {"raw_response": ... |
The largest database of live domains and detailed information about them, designed to boost your digital strategies.
| Technology | Count Domain | Percentage of Technology |
|---|---|---|
| Google Analytics | 6 | 75.00 |
| Apache HTTP Server | 1 | 12.50 |
| Cloudflare | 1 | 12.50 |
| Country | Count Domain | Percentage of Country |
|---|---|---|
| 136 | 90.07 | |
| United States (US) | 15 | 9.93 |
.co.us is a delegated second-level space within the .us country-code domain, commonly associated with Colorado’s locality naming under the legacy .us structure. In our taxonomy, we track .co.us domains as a distinct namespace to analyze usage patterns and web presence across public-sector and legacy adopters. Today we index 151 active registrations and observe 15 live .co.us websites, a compact footprint compared with commercial zones. This scale shapes traffic, resolution behavior, and brand expectations, and helps separate genuine civic entities from similarly named .co or .com counterparts. Our measurements emphasize stability over growth, making .co.us useful for longitudinal studies rather than acquisition targeting or SEO arbitrage. Download .co.us datasets from webatla.
Historically, .us adopted a geographic hierarchy where state codes (e.g., co.us) hosted counties, cities, schools, and agencies; .co.us aligns with Colorado in that schema and typically served government or education rather than general commerce. Policy for .co.us inherits .us rules, including local presence requirements, so new .co.us domains appear infrequently. Our coverage shows usage concentrated in 1 country, reflecting the namespace’s territorial design, and 0 in November 2025 new registrations last month point to minimal recent expansion. For researchers comparing administrative web estates with legacy footprints, .co.us websites offer clear signals and low noise, enabling precise entity mapping, archival linkage checks, and uptime baselining. Get historical .co.us domain data now.
Organizations choosing .co.us typically include county governments, municipal departments, K–12 districts, and public utilities; occasional legacy businesses adopt it to signal geographic trust or continuity. For operational assessment, we track configuration quality: 15 of the observed .co.us domains resolve with DNS, indicating active infrastructure worth monitoring, while 0 new registrations last week suggest negligible churn. Compared with broader commercial namespaces, .co.us websites are fewer but easier to profile, supporting rigorous SSL posture audits, authoritative content discovery, and inter-agency linkage analysis. These traits suit analysts prioritizing authenticity and jurisdictional clarity over volume-led outreach or marketing tests. Download entity-level .co.us domain intelligence from webatla.
The largest database of live domains and detailed information about them, designed to boost your digital strategies.
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