harvard.edu

Observed Jul 28, 2026, 17:00 UTC (14h 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

Up right now

Runs onAutomattic

Email byProofpoint

Secured byLet's Encrypt

Also usesGoogle Search ConsoleAtlassian

1 subdomain · institutions

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

INFRASTRUCTURE MAPwhat harvard.edu actually stands on - every host below is a signed observation

harvard.edu

A / AAAA

192.0.66.20

Automatticserves the site

a6-66.akam.neta7-65.akam.neta1-171.akam.neta10-66.akam.net+2 more

akam.netanswers its DNS

mx0a-00171101.pphosted.commx0b-00171101.pphosted.com

Proofpointreceives its email

TLS

harvard.edu

Let's Encryptissued its certificate

DNS Records

A 1

192.0.66.20

MX 2

100mx0a-00171101.pphosted.com
100mx0b-00171101.pphosted.com

TXT 48

MS=ms35192554
_51a79b140kb1cu9o67nzuefyhhxthv9
_cwe6cxmi9tji7gazwtzipl4onpu23nv
brevo-code:30d9f789747b4c124f72dabf24a0a97f
status-page-domain-verification=b4j4g69th3vv
status-page-domain-verification=p83gt91wpxms
fastly-domain-delgation-vdnblsdg768nm-21052021
airtable-verification=8b8110e9283dd87d57b3c5f2f5af2db1
airtable-verification=a92cef30671587a4f6deb7951c1c3f1a
airtable-verification=b25f432db3cbc5bfc481914364b6ce41

NS 6

a6-66.akam.net
a7-65.akam.net
a1-171.akam.net
a10-66.akam.net
a11-67.akam.net
a16-64.akam.net

SOA 1

a1-171.akam.net netmanager.harvard.edu

SRV 4

harvuni-expe01-bv1.uc.harvard.edu:5060 p5
harvuni-expe01-sc1.uc.harvard.edu:5060 p10
harvuni-expe01-bv1.uc.harvard.edu:5061 p5
harvuni-expe01-sc1.uc.harvard.edu:5061 p10

TLS Certificates (4)

Common Name	Issuer	Expires
`harvard.edu`	C=US, O=Let's Encrypt, CN=YE1	Thu, 08 Oct 2026 05:40:58 +0000
`YE1`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

www.harvard.edu

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 harvard.edu. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_9ce97aa767507d9b
Output Hash: ba62b52990a9278a36c203248ba99f8f8c0be9cf07ecb7fe3955a9853987f6e0
Signature: ed25519:4f47cdaa580991c2fac01bab78e45d5dfb360f7dd3c3529b6fbe91bf4d4665c2c6acb19fe1191c70e7fcbf173ac9237b2e824fd739bfdb0ced13e2616ec5f506
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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