blackboard.com

Observed 2026-07-15T10:28:06.028Z (1d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byMicrosoft 365

Registered withCSC Corporate Domains, Inc.

Also usesGoogle Search ConsoleAtlassianHubSpot

18 subdomains · education_expanded

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

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

blackboard.com

A / AAAA

20.85.72.68

Cloudflareserves the site

ns-719.awsdns-25.netns-1824.awsdns-36.co.ukns-1321.awsdns-37.orgns-337.awsdns-42.com

awsdns-25.net + awsdns-36.co.uk + moreanswers its DNS

blackboard-com.mail.protection.outlook.com

Microsoft 365receives its email

HTTPS probe

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

HTTP status301

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time376 ms

DNS resolutionNOERROR

Redirect chain

https://www.blackboard.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

20.85.72.68

MX 1

10blackboard-com.mail.protection.outlook.com

TXT 14

docu-45723426-bedd-41e0-a6f0-664931fc3806
mixpanel-domain-verify=92235a82-8728-4950-9851-57c4eecd4342
google-site-verification=h4SDO4a-PJNaavz2JFzCHiOqtvcVJG-r2SSOSwVnZcw
MS=ms40613892
anthropic-domain-verification-48rh2p=nzud9NjNPq281qzpTWE5ucyiZ
google-site-verification=fTocuU2OdTBoe0z0NgNx_LFAThArXIONtFHyO--shKk
pfXrSz+R3xXW/7frt70I2B9I5Ji3XNr+ndfiptWw0SwRIwJT1lzgMyka1en34swjl1jIwlBlvCnBBnb4zI+5bA==
rightscale-4938059c848a09deb829
ca3-48cd68e33ded47618c454c158fa7dcaf
atlassian-domain-verification=sL0SeJrvzBUml3o/s27o80sReunbCTKElGcidHph2tiTaZ0nMg7YECa/wuQooaq/

NS 4

ns-719.awsdns-25.net
ns-1824.awsdns-36.co.uk
ns-1321.awsdns-37.org
ns-337.awsdns-42.com

SOA 1

ns-719.awsdns-25.net awsdns-hostmaster.amazon.com

CAA 8

issue amazon.com
issuewild sectigo.com
iodef mailto:dnstech@blackboard.com
issue digicert.com
issuewild amazon.com
issue letsencrypt.org
issue sectigo.com
issuewild digicert.com

TLS Certificates (0)

None.

Subdomains (18)

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 blackboard.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 7261cf8b-7c9b-4f95-b146-36a5fa5736e9
Output Hash: 649831681b897dbb8803b7b0538a0f59a640545f3f9512db22dce332be94e637
Signature: ed25519:8366822b66e2181cf6ae2481830f23bd94ac43b597d1eadcb6c6a1ed0b4f89a08f3923c565f98e85bf6cd4b8b6a7a200adda83840d656fe1cfb12571a7d32608
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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