ccel.org

Observed Jul 22, 2026, 00:56 UTC (16h 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 onCalvin College

Email bySendGrid

Secured byLet's Encrypt

Registered withIONOS SE

1 subdomain · tranco_40k

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

INFRASTRUCTURE MAPwhat ccel.org actually stands on - every host below is a signed observation

ccel.org

A / AAAA

153.106.135.32

Calvin Collegeserves the site

ns1117.ui-dns.orgns1117.ui-dns.bizns1117.ui-dns.comns1117.ui-dns.de

ui-dns.org + ui-dns.biz + moreanswers its DNS

mx00.ionos.commx01.ionos.com

SendGridreceives its email

TLS

ccel.org

Let's Encryptissued its certificate

DNS Records

A 1

153.106.135.32

MX 2

10mx00.ionos.com
10mx01.ionos.com

TXT 2

v=spf1 a mx ip4:153.106.135.0/24 include:servers.mcsv.net include:_spf.perfora.net include:_spf-us.ionos.com include:_spf.kundenserver.de include:sendgrid.net ?all
v=DMARC1; p=quarantine; pct=100; rua=mailto:re+oa9c35aaxsw@dmarc.postmarkapp.com; ruf=mailto:support@ccel.org; sp=none; aspf=r;

NS 4

ns1117.ui-dns.org
ns1117.ui-dns.biz
ns1117.ui-dns.com
ns1117.ui-dns.de

SOA 1

ns1117.ui-dns.org hostmaster.1and1.com

SRV 1

imap.ionos.com:993 p10

TLS Certificates (4)

Common Name	Issuer	Expires
`ccel.org`	C=US, O=Let's Encrypt, CN=YE1	Sat, 19 Sep 2026 23:43:46 +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.ccel.org

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 ccel.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_0c1dbeb0dacec014
Output Hash: f284e0a8f3e241b41422850dcd58dffebff1024bf181ce105b7fa05c487ec608
Signature: ed25519:eef2596eaa34b8a46ba885dbb80ce5f404e7ebe31adc66d2c4a36627c301f9a3c4101928355d93d43132382859cfd71679516816f9c740ed0106fa3b7c410604
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/ccel.org