boulder.co.us website report
Authority, global rank, the websites that link to boulder.co.us, when it was registered and where it's hosted – free, from public data.
authority
global rank of 133,241,980
websites link to it
domain age
How strong is boulder.co.us?
boulder.co.us has an XKey authority of 42 out of 100, which makes it a well-established website. It ranks #51,437 of 133,241,980 websites by how central it is to the web's links – the top 0.04%. 409 different websites link to it.
Authority comes from Common Crawl's map of links between websites (July–September 2026): a site linked from many well-linked sites scores high. Google doesn't use this number, but it tracks the kind of link strength that helps pages rank. What is domain authority?
Which websites link to boulder.co.us?
The 50 strongest websites linking to boulder.co.us, by link strength (0–100). Select any one to see its own report.
| # | Website linking to it | Link strength |
|---|---|---|
| 1 | google.com | 99 |
| 2 | wikipedia.org | 88 |
| 3 | blogspot.com | 82 |
| 4 | github.io | 78 |
| 5 | wikimedia.org | 77 |
| 6 | harvard.edu | 75 |
| 7 | w3.org | 74 |
| 8 | mit.edu | 72 |
| 9 | stanford.edu | 72 |
| 10 | epa.gov | 71 |
| 11 | nasa.gov | 71 |
| 12 | openstreetmap.org | 70 |
| 13 | noaa.gov | 68 |
| 14 | yale.edu | 68 |
| 15 | nist.gov | 67 |
| 16 | ucla.edu | 66 |
| 17 | princeton.edu | 65 |
| 18 | googleblog.com | 64 |
| 19 | ycombinator.com | 64 |
| 20 | colorado.edu | 62 |
| 21 | state.mn.us | 62 |
| 22 | voanews.com | 62 |
| 23 | debian.org | 61 |
| 24 | denverpost.com | 61 |
| 25 | vt.edu | 60 |
| 26 | sc.gov | 59 |
| 27 | discovermagazine.com | 58 |
| 28 | github.blog | 57 |
| 29 | emb-japan.go.jp | 57 |
| 30 | pbworks.com | 56 |
| 31 | muni.cz | 56 |
| 32 | open.ac.uk | 56 |
| 33 | fedoraproject.org | 55 |
| 34 | climate.gov | 55 |
| 35 | ucar.edu | 55 |
| 36 | ugm.ac.id | 54 |
| 37 | uibk.ac.at | 54 |
| 38 | westword.com | 53 |
| 39 | lwn.net | 53 |
| 40 | scienceblogs.com | 52 |
| 41 | idealist.org | 52 |
| 42 | carleton.edu | 52 |
| 43 | streetsblog.org | 52 |
| 44 | sciencing.com | 51 |
| 45 | abovethelaw.com | 51 |
| 46 | well.com | 51 |
| 47 | listverse.com | 51 |
| 48 | qsl.net | 50 |
| 49 | activerain.com | 49 |
| 50 | resilience.org | 49 |
Showing the strongest 50 of 409. Compare boulder.co.us with a competitor in the backlink checker.
When was boulder.co.us registered?
boulder.co.us was registered on 6 February 2003 through US Locality Zone Manager, and is paid up until 6 February 2027.
| Registered | 6 February 2003 |
|---|---|
| Expires | 6 February 2027 |
| Last updated | 12 February 2026 |
| Registrar | US Locality Zone Manager |
| Name servers | ns1.localitymanagement.us, ns2.localitymanagement.us, ns3.localitymanagement.us, ns4.localitymanagement.us |
Straight from the domain registry. Owners' personal details are hidden by law, so to reach the owner use the website's own contact page or the registrar. Full record: WHOIS lookup.
Where is boulder.co.us hosted, and what is it built with?
We check the live website when you ask, so this page stays fast.
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Link data: Common Crawl web graph, July–September 2026. Registration data: the domain registry, checked 4 November 2026. Look up another website on the website report page.