sigma-squared.org website report
Authority, global rank, the websites that link to sigma-squared.org, 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 sigma-squared.org?
sigma-squared.org has an XKey authority of 16 out of 100, which makes it a young or little-linked website. It ranks #6,923,750 of 133,241,980 websites by how central it is to the web's links – the top 6%. 44 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 sigma-squared.org?
The 44 strongest websites linking to sigma-squared.org, by link strength (0–100). Select any one to see its own report.
| # | Website linking to it | Link strength |
|---|---|---|
| 1 | substack.com | 75 |
| 2 | ucl.ac.uk | 63 |
| 3 | tum.de | 58 |
| 4 | bybit.com | 55 |
| 5 | sifted.eu | 52 |
| 6 | iamsterdam.com | 51 |
| 7 | tech.eu | 51 |
| 8 | washu.edu | 49 |
| 9 | authory.com | 43 |
| 10 | trend.at | 42 |
| 11 | therecursive.com | 41 |
| 12 | bitsandpretzels.com | 39 |
| 13 | growsurf.com | 39 |
| 14 | fonio.ai | 36 |
| 15 | philea.eu | 36 |
| 16 | startupvalencia.org | 32 |
| 17 | ewor.com | 29 |
| 18 | globalco2initiative.org | 26 |
| 19 | kaya.vc | 25 |
| 20 | ommax.com | 25 |
| 21 | skinnovation.at | 24 |
| 22 | startupvoice.pl | 24 |
| 23 | weband.bg | 23 |
| 24 | weshape.tech | 23 |
| 25 | theganeshalab.com | 23 |
| 26 | innovationshub.pl | 22 |
| 27 | lemontaps.de | 22 |
| 28 | q-summit.com | 21 |
| 29 | gennow.de | 21 |
| 30 | uprotterdam.com | 20 |
| 31 | yotewo.com | 19 |
| 32 | fin-erth.com | 19 |
| 33 | betterworlds.com | 19 |
| 34 | insidesmallgiants.com | 14 |
| 35 | survivaltech.club | 12 |
| 36 | formingimpact.com | 11 |
| 37 | wearemosaik.com | 8 |
| 38 | tadeaskula.cz | 8 |
| 39 | solderneer.me | 8 |
| 40 | bad1.events | 8 |
| 41 | newedgecoaching.com | 7 |
| 42 | sacredtime.nl | 7 |
| 43 | hfp.dev | 4 |
| 44 | deepai.vc | 0 |
When was sigma-squared.org registered?
sigma-squared.org was registered on 24 March 2021 through Amazon Registrar, Inc., and is paid up until 24 March 2027.
| Registered | 24 March 2021 |
|---|---|
| Expires | 24 March 2027 |
| Last updated | 12 August 2026 |
| Registrar | Amazon Registrar, Inc. |
| Name servers | ns-1470.awsdns-55.org, ns-1554.awsdns-02.co.uk, ns-356.awsdns-44.com, ns-791.awsdns-34.net |
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 sigma-squared.org hosted, and what is it built with?
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Link data: Common Crawl web graph, July–September 2026. Registration data: the domain registry, checked 2 November 2026. Look up another website on the website report page.