coursesu.com

Observed Jul 22, 2026, 00:26 UTC (2d 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.

Verify this receipt yourself + Watch this domain

Guarded by a firewall

Runs onCloudflare

Email byGoogle Workspace

Secured byGandi SAS

Registered withGandi SAS

Also usesGoogle Search ConsoleFacebook/Meta

tranco_20k

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

INFRASTRUCTURE MAPwhat coursesu.com actually stands on - every host below is a signed observation

coursesu.com

A / AAAA

217.70.184.55

Cloudflareserves the site

ns-220-b.gandi.netns-56-c.gandi.netns-27-a.gandi.netz.dns.gandi.net

gandi.netanswers its DNS

ALT3.ASPMX.L.GOOGLE.comALT2.ASPMX.L.GOOGLE.comASPMX.L.GOOGLE.comALT1.ASPMX.L.GOOGLE.com+1 more

Google Workspacereceives its email

TLS

coursesu.com

Gandi SASissued its certificate

DNS Records

A 1

217.70.184.55

MX 5

10ALT3.ASPMX.L.GOOGLE.com
5ALT2.ASPMX.L.GOOGLE.com
1ASPMX.L.GOOGLE.com
5ALT1.ASPMX.L.GOOGLE.com
10ALT4.ASPMX.L.GOOGLE.com

TXT 6

Sendinblue-code:acf7191db73a3450c764f85ded269075
google-site-verification=eTK2rWbtT9sLsLlGORsghhwPNqQrEwPOUyP1SC4BGoU
google-site-verification=CzSRrlWtvBBrGSwPXVXnOXl5744L432v0YydjUTemmU
facebook-domain-verification=6z86s9iifi1anmuke5ayborhmshkjz
v=spf1 include:_spf.mail.as8677.net a:production.digital.systemeu.demandware.net ip4:160.8.114.211 ip4:160.8.114.212 include:_spf.google.com ip4:194.2.211.113 ip4:195.101.47.62 ip4:194.145.8.109 include:spf.sendinblue.com include:_spf1.mailgun.org include:_spf2.mailgun.org include:_spf.eu.mailgun.org include:mail.zendesk.com ~all
v=DMARC1; p=quarantine; pct=100; rua=mailto:ipm612v@ar.glockapps.com, mailto:rua@dmarc.brevo.com; ruf=mailto:ipm612v@fr.glockapps.com; adkim=r; aspf=r; fo=1;

NS 4

ns-220-b.gandi.net
ns-56-c.gandi.net
ns-27-a.gandi.net
z.dns.gandi.net

SOA 1

ns1.gandi.net hostmaster.gandi.net

TLS Certificates (2)

Common Name	Issuer	Expires
`coursesu.com`	C=FR, O=Gandi SAS, CN=GandiCert	Sat, 03 Oct 2026 23:59:59 +0000
`GandiCert`	C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2	Sun, 16 Apr 2034 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 coursesu.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_3d4b8ffa7d2fcfbb
Output Hash: 4006f87cecf644ed7eb7526ff73a868ee12c63d2c3abe27564f1f04eb5e097d6
Signature: ed25519:975e8ec10d843cc8ba2074fd673efffecb72843a1981e6cb45acb23fae471ce7a7a0da35fc9c68672b0e4ad3cc93074585a49a078af41bae5240a1601179e603
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/coursesu.com