concord.edu
Observed Jul 18, 2026, 12:26 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onDigitalOcean
Email byMicrosoft 365
Secured bySectigo
Also usesGoogle Search ConsoleFacebook/Meta
push_legacy
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat concord.edu actually stands on - every host below is a signed observation
concord.edu
A / AAAA
192.124.249.140
DigitalOceanserves the site
NS
pdns10.domaincontrol.compdns09.domaincontrol.com
domaincontrol.comanswers its DNS
MX
concord-edu.mail.protection.outlook.com
Microsoft 365receives its email
TLS
*.concord.edu
Sectigo Limitedissued its certificate
DNS Records
A 1
192.124.249.140
MX 1
0concord-edu.mail.protection.outlook.com
TXT 13
v=spf1 a mx a:lists.concord.edu ip4:216.24.75.0/24 include:spf.happyfox.com include:spf.protection.outlook.com include:sendgrid.net -allb8dvc665q737t5qo0tov6svamvlogmein-verification-code=1ec368f6-01d2-42b0-ae9e-844cb63037e0adobe-idp-site-verification=dd5a2f996b4c10a225426676cb87868d0fb3118f27cff5264cc4efb51f64c604google-site-verification=hes5AvEYxgAYAnrf8vXF52psIB61kxYeKO_UtT_Yp3Yej2j64i65jn08b6nhlomfbtrhmMS=ms27010306ip4:168.245.25.1167c4pg9t060mf1bhomj90qabh5l0CFA052DE7793A521555200E0741DF6E3ED03C03
NS 2
pdns10.domaincontrol.compdns09.domaincontrol.com
SOA 1
pdns09.domaincontrol.com dns.jomax.net
SRV 1
autodiscover.outlook.com:443 p0
TLS Certificates (2)
| Common Name | Issuer | Expires |
|---|---|---|
*.concord.edu |
C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication CA DV R36 | Sun, 11 Oct 2026 23:59:59 +0000 |
Sectigo Public Server Authentication CA DV R36 |
C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication Root R46 | Fri, 21 Mar 2036 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 receiptEd25519 Receipt
- Receipt ID
rcpt_75e42bc3083cd851- Output Hash
7dfbc834b762022064d41890f867e17dce7de66c2af13059633f4be20306d2a6- Signature
ed25519:4d25634d655889665d50c9f54b5ea93369611f4a58a711503b03a0557b2ba1a14ff4c94eb236a880bf1911ee655cfc9013695f0c50719ca84cdb6f1bb6dd910e- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast