upspin.io

Observed Jul 27, 2026, 20:19 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

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 upspin.io actually stands on - every host below is a signed observation

upspin.io

A / AAAA

185.199.109.153185.199.108.153185.199.110.153185.199.111.153+4 more

2606serves the site

ns-cloud-c1.googledomains.comns-cloud-c3.googledomains.comns-cloud-c4.googledomains.comns-cloud-c2.googledomains.com

googledomains.comanswers its DNS

alt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comaspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

upspin.io

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

AAAA 4

2606:50c0:8001::153
2606:50c0:8003::153
2606:50c0:8000::153
2606:50c0:8002::153

MX 5

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

TXT 2

google-site-verification=fwmD-OqRqQS6QXN2DQE0q-lV0H7UuYeK4VvnvBorkdg
v=spf1 include:sendgrid.net ~all

NS 4

ns-cloud-c1.googledomains.com
ns-cloud-c3.googledomains.com
ns-cloud-c4.googledomains.com
ns-cloud-c2.googledomains.com

SOA 1

ns-cloud-c1.googledomains.com cloud-dns-hostmaster.google.com

TLS Certificates (3)

Common Name	Issuer	Expires
`upspin.io`	C=US, O=Let's Encrypt, CN=YR2	Fri, 28 Aug 2026 17:46:19 +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 upspin.io. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_fba456837f17bf48
Output Hash: 08ad8fff62dfa95f3ee03fe9cabf87e1a3acf82dd54a3c1088ba8c16b8197116
Signature: ed25519:60592961209c1665b67e7a5313cbe59fb3304f24e30e72428000943abf6cbc4d70874a98bf9503a8e77336055d05058d5b67bd4a285a3d3a76d5ee2c0c8bcd02
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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