understood.org
Observed 2026-07-13T10:04:07.131Z (19h ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
Email byGoogle Workspace
Also usesGoogle Search ConsoleMiroFacebook/MetaAtlassian
IPv6 · 44 subdomains · tranco_40k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat understood.org actually stands on - every host below is a signed observation
understood.org
A / AAAA
104.18.14.133104.18.15.1332606:4700::6812:e852606:4700::6812:f85
Cloudflareserves the site
NS
jill.ns.cloudflare.comfred.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
smtp.google.com
Google Workspacereceives its email
HTTPS probe
redirect
Redirecting (3xx) 308 → https://www.understood.org/
HTTP status308
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time58 ms
DNS resolutionNOERROR
Redirect chain
https://www.understood.org/Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".
DNS Records
A 2
104.18.14.133104.18.15.133
AAAA 2
2606:4700::6812:e852606:4700::6812:f85
MX 1
0smtp.google.com
TXT 22
fcp51l2t5mpdzf6d6x1ptmzlnnnn807fbs0tw4pbx73ck9b5hrw9w4cfvsy2fsl1contractworksverify = 2XFwQ3o62jdjdyQyJFfzwt_jr2013rd8nglahx0ag3qlqt569265d4tmes=0bb5c6ba1c638cde600907776df1f1f984dw58n4ws11qbtlc6pwbkwvj0gs70m8securitystudio-site-verification=G8gyGWRTEswJT49hGOwMvg==twilio-domain-verification=8260bdea6b9954209f72e17245c2f656MS=ms36583737v=spf1 include:emsd1.com include:us._netblocks.mimecast.com include:mail.zendesk.com include:mg-spf.greenhouse.io include:spf.mandrillapp.com include:servers.mcsv.net include:_spf.google.com include:spf.protection.outlook.com ~all
NS 2
jill.ns.cloudflare.comfred.ns.cloudflare.com
SOA 1
fred.ns.cloudflare.com dns.cloudflare.com
TLS Certificates (0)
None.
Subdomains (44)
- annualreport.understood.org
- api-qa.understood.org
- api.understood.org
- app.understood.org
- auth-dev.understood.org
- auth.understood.org
- braintrust-tutors.assistant.understood.org
- brand.understood.org
- cdn-assets.understood.org
- cdn-downloads.understood.org
- cdn-images.understood.org
- cdn-videos.understood.org
- collector.understood.org
- companion.understood.org
- current-prod.understood.org
- current-qa.understood.org
- de-sp.understood.org
- dev1.understood.org
- dev2.understood.org
- diverse-learners.assistant.understood.org
- draft.understood.org
- intersection-collective.assistant.understood.org
- kessler.assistant.understood.org
- last-prod.understood.org
- last-qa.understood.org
- learning-heroes-mke.assistant.understood.org
- learning-heroes-tarrant.assistant.understood.org
- learning-heroes.assistant.understood.org
- links.understood.org
- neelo-private.assistant.understood.org
- preferences.understood.org
- qa-v6.understood.org
- qa.understood.org
- static.understood.org
- staticdev.understood.org
- staticqa.understood.org
- storybook.understood.org
- support.understood.org
- test-partner.assistant.understood.org
- thereachinstitute.assistant.understood.org
- tme-old.understood.org
- tme.understood.org
- trustcenter.understood.org
- www.understood.org
The proof
Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
e4378fa1-36ca-4fba-9278-17f42a710dc8- Output Hash
293a5d1c655655d919015f05d9a56131b9c6eb444259a001cb83cb7b912fa40b- Signature
ed25519:201df10114710069dc4e387f26ce2179f7523cabf6bed2f0e1bd6cb4c6ca7b023b23854c64e95e06997122bb765fb1a0fcd79a6635b1e6c776b1cafa801e1505- Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b- Parent
(genesis)- Plane
- fast