coursesu.com

Observed 2026-07-13T04:13:05.659Z (1d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Registered withGandi SAS

Also usesGoogle Search ConsoleFacebook/Meta

5 subdomains · 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

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

gandi.netanswers its DNS

ALT3.ASPMX.L.GOOGLE.comALT2.ASPMX.L.GOOGLE.comASPMX.L.GOOGLE.comALT4.ASPMX.L.GOOGLE.com+1 more

Google Workspacereceives its email

HTTPS probe

redirect Redirecting (3xx) 301 → https://www.coursesu.com/

HTTP status301

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time772 ms

DNS resolutionNOERROR

Redirect chain

https://www.coursesu.com/

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

217.70.184.55

MX 5

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

TXT 7

google-site-verification=CzSRrlWtvBBrGSwPXVXnOXl5744L432v0YydjUTemmU
google-site-verification=eTK2rWbtT9sLsLlGORsghhwPNqQrEwPOUyP1SC4BGoU
facebook-domain-verification=6z86s9iifi1anmuke5ayborhmshkjz
Sendinblue-code:acf7191db73a3450c764f85ded269075
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;
v=DKIM1; (detected)

NS 4

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

SOA 1

ns1.gandi.net hostmaster.gandi.net

TLS Certificates (0)

None.

Subdomains (5)

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: fde16c3f-9fab-48b1-9945-449b35dc1125
Output Hash: 53b98fbca4c8ce1c8cb179f360a17655c8388b06edbf4e360d38e2a5b01251a4
Signature: ed25519:b056198031596b695c08d58914ef8c82cec5e2088ecc8868cb40d4d7cb9bfc923743ca192441cee073f3c66780b95f90b5a64086cf53aaa387580f6cd6af9f0f
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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