risczero.com

Observed Jul 28, 2026, 10:18 UTC (20h 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

Email byGoogle Workspace

Secured byLet's Encrypt

Also usesHubSpot

majestic

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

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

risczero.com

A / AAAA

216.150.1.1

unattributedserves the site

ns-364.awsdns-45.comns-614.awsdns-12.netns-1316.awsdns-36.orgns-1739.awsdns-25.co.uk

awsdns-45.com + awsdns-12.net + moreanswers its DNS

aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

risczero.com

Let's Encryptissued its certificate

DNS Records

A 1

216.150.1.1

MX 5

1aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com
10alt3.aspmx.l.google.com
10alt4.aspmx.l.google.com

TXT 2

v=spf1 include:_spf.google.com include:44040483.spf05.hubspotemail.net ~all
v=DMARC1; p=none; rua=mailto:dmarc-reports@risczero.com

NS 4

ns-364.awsdns-45.com
ns-614.awsdns-12.net
ns-1316.awsdns-36.org
ns-1739.awsdns-25.co.uk

SOA 1

ns-364.awsdns-45.com awsdns-hostmaster.amazon.com

TLS Certificates (3)

Common Name	Issuer	Expires
`risczero.com`	C=US, O=Let's Encrypt, CN=YR1	Sun, 25 Oct 2026 11:34:09 +0000
`YR1`	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)

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

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

Ed25519 Receipt

Receipt ID: rcpt_fd436be509e0b2d5
Output Hash: a5092fced11f13460675a3a23e5b1131592ae8828533f68e8da7221ecd0f809d
Signature: ed25519:a9cd68b35d39d09e38412b47e428147a79b98f3d6e0fadea0bdde182013ccff7ed20c71793a54c63988d5be75bd23bedd9d0c6ceb43f4edc9883e907c2441c01
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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