zksync.io

Observed Jul 18, 2026, 12:01 UTC (9h ago). Every field below was attested with an Ed25519 signature at scan time.

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: bec736c2-4848-41af-9531-c77321b1e2c6
Output Hash: 7d5153aa305455a858a242854afeaf67bb329ca519d3617616d7ef6e6e4c9e7d
Signature: ed25519:a42c82cd5f67ce680296f1d4d2e833e925837237ac5b8138382ab25165f7785aa41365967666acf33269f86171500453f150360f2bbc3ed538d6dd78cc8f870a
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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