penumbra.com

Observed Jul 18, 2026, 12:15 UTC (1d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onDigitalOcean

Secured byLet's Encrypt

Registered withGoDaddy.com, LLC

Also usesGoogle Search Console

1 subdomain · pharma_biotech

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

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

penumbra.com

A / AAAA

142.93.24.181

DigitalOceanserves the site

ns23.domaincontrol.comns24.domaincontrol.com

domaincontrol.comanswers its DNS

west.smtp.mx.exch090.serverdata.neteast.smtp.mx.exch090.serverdata.net

serverdata.netreceives its email

TLS

penumbra.com

Let's Encryptissued its certificate

DNS Records

A 1

142.93.24.181

MX 2

20west.smtp.mx.exch090.serverdata.net
10east.smtp.mx.exch090.serverdata.net

TXT 3

v=spf1 a mx include:_spf.elasticemail.com include:emailsrvr.com include:spf.serverdata.net -all
google-site-verification=KLQHouslnNKOKRDIorjGk7jvqcyP--u23sAliD2faCM
v=DMARC1;p=none;pct=100;aspf=r;adkim=r;

NS 2

ns23.domaincontrol.com
ns24.domaincontrol.com

SOA 1

ns23.domaincontrol.com dns.jomax.net

TLS Certificates (3)

Common Name	Issuer	Expires
`penumbra.com`	C=US, O=Let's Encrypt, CN=YR2	Fri, 11 Sep 2026 02:47:43 +0000
`YR2`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

www.penumbra.com

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

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

Ed25519 Receipt

Receipt ID: d4d43285-626d-4882-b54f-25d15ca91a9c
Output Hash: 002a09026cd18b585d13fbcd88eb54c956e5f1b5d493c9c8c619e29b587e9e15
Signature: ed25519:ca8e71efd4078605bfa889b14c621e54fb1ac3262faddc65ed8bba1b55b8e75709c0d877aca55e1a86de627ced2498d32df2c49ba8716ef8b7930a0c32c1b607
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/penumbra.com