zxcalculus.com

Observed Jul 26, 2026, 22:41 UTC (6d 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

Secured byLet's Encrypt

domcop

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

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

zxcalculus.com

A / AAAA

185.199.109.153185.199.108.153185.199.110.153185.199.111.153

unattributedserves the site

dns1.registrar-servers.comdns2.registrar-servers.com

registrar-servers.comanswers its DNS

eforward1.registrar-servers.comeforward2.registrar-servers.comeforward3.registrar-servers.comeforward4.registrar-servers.com+1 more

registrar-servers.comreceives its email

TLS

zxcalculus.com

Let's Encryptissued its certificate

DNS Records

A 4

185.199.109.153
185.199.108.153
185.199.110.153
185.199.111.153

MX 5

10eforward1.registrar-servers.com
10eforward2.registrar-servers.com
10eforward3.registrar-servers.com
15eforward4.registrar-servers.com
20eforward5.registrar-servers.com

TXT 1

v=spf1 include:spf.efwd.registrar-servers.com ~all

NS 2

dns1.registrar-servers.com
dns2.registrar-servers.com

SOA 1

dns1.registrar-servers.com hostmaster.registrar-servers.com

TLS Certificates (3)

Common Name	Issuer	Expires
`zxcalculus.com`	C=US, O=Let's Encrypt, CN=YR2	Tue, 08 Sep 2026 13:06:52 +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 (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 receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for zxcalculus.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_c363af9aa93d3152
Output Hash: 0a3269c7935c07dde24488925f414941571b2433efb94ca6a08b692980fc9fb0
Signature: ed25519:d31e5fa3ec93d856aa259c27b08a6ff0738018a83579c8c7be59b8e4b1415aad5b4810749befae2f420f758e5f4a2f6431adcb714344e85d20f7a7ff3036ed0c
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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