coursiv.io

Observed Jul 18, 2026, 13:39 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onAmazon

Email byGoogle Workspace

Secured byLet's Encrypt

Also usesGoogle Search Console

tranco_40k

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat coursiv.io actually stands on - every host below is a signed observation

coursiv.io

A / AAAA

64.239.109.1

Amazonserves the site

ns-1175.awsdns-18.orgns-1962.awsdns-53.co.ukns-257.awsdns-32.comns-575.awsdns-07.net

awsdns-18.org + awsdns-53.co.uk + moreanswers its DNS

aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

coursiv.io

Let's Encryptissued its certificate

DNS Records

A 1

64.239.109.1

MX 5

1aspmx.l.google.com
10alt3.aspmx.l.google.com
10alt4.aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com

TXT 5

GmuH+2JKLoMq7CeAxah9ft96NLcqKH61RQtdKBd4Yxg=
google-site-verification=QPTIOXtX0Vb5CIA4s35n8xljxZPJf5fk9CQIMIltkH0
google-site-verification=TAksL_liOh-PZUKyx3c6HsZmwGdpjtkdmogjBHedncY
v=spf1 include:emsd1.com ~all
v=DMARC1; p=none;

NS 4

ns-1175.awsdns-18.org
ns-1962.awsdns-53.co.uk
ns-257.awsdns-32.com
ns-575.awsdns-07.net

SOA 1

ns-1175.awsdns-18.org awsdns-hostmaster.amazon.com

TLS Certificates (3)

Common Name	Issuer	Expires
`coursiv.io`	C=US, O=Let's Encrypt, CN=YR1	Sat, 26 Sep 2026 17:58:25 +0000
`YR1`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (0)

None observed.

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 receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for coursiv.io. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/coursiv.io">
  <img src="https://domaindrift.io/badge/coursiv.io.svg"
       width="300" height="64" alt="DomainDrift signed observations for coursiv.io">
</a>

Ed25519 Receipt

Receipt ID: 1c75204c-9d24-42ce-9070-02201ded8529
Output Hash: e8a52a7ef1c3f862be20c23b215b3cd34bcc77ee5df7cd36a32bf92a0cb805ba
Signature: ed25519:e91acb8d3b73281b1e307e6690f16cd3253c3fe6c842fcb71f3cffe74d53e1ed50a015bc2c98cdecf46e1004c584d3239e00a1cf7017b9f8a55ac11bb0473207
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/coursiv.io