zksync.io

Observed Jul 24, 2026, 02:38 UTC (3h 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 onAmazon

Email byGoogle Workspace

Secured byLet's Encrypt

Also usesGoogle Search ConsoleHubSpot

crypto

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

INFRASTRUCTURE MAPwhat zksync.io actually stands on - every host below is a signed observation

zksync.io

A / AAAA

76.76.21.21

Amazonserves the site

lily.ns.cloudflare.comcharles.ns.cloudflare.com

cloudflare.comanswers its DNS

aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx2.googlemail.com+1 more

Google Workspacereceives its email

TLS

zksync.io

Let's Encryptissued its certificate

DNS Records

A 1

76.76.21.21

MX 5

1aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com
10aspmx2.googlemail.com
10aspmx3.googlemail.com

TXT 8

google-site-verification=8qzbhwTcl1zWAXx-jIlmmUWPERLUwvOZbjnRYofyDJQ
google-site-verification=B0RoPM3Los0m2ZvEehCmCVkOZGOzmFe27xwcwFnzgII
google-site-verification=E3kO2XOmhfNYwcc2zhUzMbMZCiQxLgnJUwua0Xn1LK4
google-site-verification=YpLifSPXNpU3nBjYxImpGTOvdJu5RCRliCKwLGHTRk4
google-site-verification=hrWPMoXfTOG40VQGoOgWmIW4shMGIsObggR1BNBm5bg
google-site-verification=zY6DRxGMoqjcD4J0D5-rXEc33f_V1q74oQj6vy3LxiU
v=spf1 include:_spf.google.com include:20178098.spf03.hubspotemail.net -all
v=DMARC1; p=reject; ruf=mailto:dmarc@zksync.io; pct=100; adkim=s; aspf=s; fo=1

NS 2

lily.ns.cloudflare.com
charles.ns.cloudflare.com

SOA 1

charles.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (3)

Common Name	Issuer	Expires
`zksync.io`	C=US, O=Let's Encrypt, CN=YR2	Sat, 26 Sep 2026 14:03:09 +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 zksync.io. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_f5e9f5ec96563735
Output Hash: 011c1ef1ce06b5250bd9a367e99612ba82cec6ac5058fafc7fbc12877f2128a1
Signature: ed25519:9bd2ddc74bbc42ac153f45e9db80c595e08e0bcc9b12c4947713b67e5a4f1cdf383fbce65cefa4bf449aae84e367c156775da044679b9785dbe72d0a4590600e
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/zksync.io