studyisland.com
Observed Jul 22, 2026, 00:27 UTC (1d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation — watch it for 5-minute checks.
Up right now
Runs onAmazon
Email byMicrosoft 365
Secured byDigiCert
Registered withNetwork Solutions, LLC
Also usesGoogle Search Console
1 subdomain · tranco_20k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat studyisland.com actually stands on - every host below is a signed observation
studyisland.com
A / AAAA
54.227.162.221
Amazonserves the site
NS
ns-1212.awsdns-23.orgns-1610.awsdns-09.co.ukns-363.awsdns-45.comns-590.awsdns-09.net
awsdns-23.org + awsdns-09.co.uk + moreanswers its DNS
MX
studyisland-com.mail.eo.outlook.com
Microsoft 365receives its email
TLS
www.edmentum.com
DigiCert Incissued its certificate
DNS Records
A 1
54.227.162.221
MX 1
10studyisland-com.mail.eo.outlook.com
TXT 5
MS=ms99450893google-site-verification=oJzoD5T0mVRH472NTl2GwTCh29I0fpMEbAe9uOBK-gsv=msv1 t=E7B4C7D2-4782-4A5E-8F98-6F0D5DEB28A1v=spf1 ip4:64.18.0.0/20 ip4:38.92.142.154 ip4:38.140.236.234 include:spf.messaging.microsoft.com include:mktomail.com ~allv=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email;
NS 4
ns-1212.awsdns-23.orgns-1610.awsdns-09.co.ukns-363.awsdns-45.comns-590.awsdns-09.net
SOA 1
ns-590.awsdns-09.net awsdns-hostmaster.amazon.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.edmentum.com |
C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1 | Fri, 11 Sep 2026 23:59:59 +0000 |
DigiCert Global Root G2 |
C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2 | Fri, 15 Jan 2038 12:00:00 +0000 |
DigiCert Global G2 TLS RSA SHA256 2020 CA1 |
C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2 | Sat, 29 Mar 2031 23:59:59 +0000 |
Subdomains (1)
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
rcpt_db5fecbcd4b1d269- Output Hash
b0550d79919559304b57c9b2b99e27471c1ff3a12b41f786a5bafde0cef33ada- Signature
ed25519:4657ede5ff25fb4ec436718dda544fe3e654fff7fd403ad2f148dae76f3d647b5c20c4ce64d0adeeb3abe092f7f369f73b83dca94a03b0ef4008b2b5d1f33d0e- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast