userstack.com

Observed Jul 27, 2026, 03:16 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

Runs onCloudflare

Email byGoogle Workspace

Secured byLet's Encrypt

Also usesGoogle Search Console

IPv6 · domcop

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

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

userstack.com

A / AAAA

172.67.136.209104.21.78.1972606:4700:3035::6815:4ec52606:4700:3034::ac43:88d1

Cloudflareserves the site

abby.ns.cloudflare.comram.ns.cloudflare.com

cloudflare.comanswers 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

userstack.com

Let's Encryptissued its certificate

DNS Records

A 2

172.67.136.209
104.21.78.197

AAAA 2

2606:4700:3035::6815:4ec5
2606:4700:3034::ac43:88d1

MX 5

10aspmx.l.google.com
20alt1.aspmx.l.google.com
50alt2.aspmx.l.google.com
60alt3.aspmx.l.google.com
70alt3.aspmx.l.google.com

TXT 5

google-site-verification=xKJ1aU0frrLX5UFH-JoJ5bGvzl6xhj0-KDoV1kUjRww
google-site-verification=zyI2-nzBp88BYP9nAtglx_7OKiyqIOqrRyK9VIMLNWo
v=spf1 include:zoho.eu include:mail.zendesk.com ~all
zoho-verification=zb15467054.zmverify.zoho.com
zoho-verification=zb93651631.zmverify.zoho.eu

NS 2

abby.ns.cloudflare.com
ram.ns.cloudflare.com

SOA 1

abby.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (4)

Common Name	Issuer	Expires
`userstack.com`	C=US, O=Let's Encrypt, CN=YE2	Fri, 11 Sep 2026 20:38:42 +0000
`YE2`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	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 userstack.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_64cd230db8305e7c
Output Hash: 2180e463a42d396d1a707883106fef93096b5d588633b54174501c3978ddf4e4
Signature: ed25519:8a49d9c0ea20cbc1cd824853d7a34a80baf3ecbc67a46fd387ec9e86d87fdc7dda22865fe594e0cb61590a78c50e976193a45a00d0212476198917b143847b07
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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