upstream.to

Observed Jul 25, 2026, 03:11 UTC (8d 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

Not responding

Email byGoogle Workspace

Also usesGoogle Search Console

tranco

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

INFRASTRUCTURE MAPwhat upstream.to actually stands on - every host below is a signed observation

upstream.to

A / AAAA

185.178.208.135

unattributedserves the site

brenda.ns.cloudflare.comjoel.ns.cloudflare.com

cloudflare.comanswers its DNS

aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more

Google Workspacereceives its email

DNS Records

A 1

185.178.208.135

MX 5

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

TXT 1

google-site-verification=ivb6uGZCCVK9Xh-hxu7m1p860BdTzZsRLsuqFbyvQ4o

NS 2

brenda.ns.cloudflare.com
joel.ns.cloudflare.com

SOA 1

brenda.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (0)

None.

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 upstream.to. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_132bcd0516bb1f3e
Output Hash: 9846d5da97f02b513e3d3475523a65e8ca3f0b71639a00943a8e2bd9ec49d9e7
Signature: ed25519:8b817e85d7a3f9f59727ff41acb2c64f74929ad65e96df93d1c85cc1b807740543535dbb3413582d70ce102d21300336dbf50914e5575c109006cd1c35168304
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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