upstream.nl

Observed Jul 26, 2026, 08:54 UTC (7d 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 · 1 subdomain · majestic

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

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

upstream.nl

A / AAAA

77.241.81.1552a00:1c98:1000:1112:0:4:4521:e8d5

2a00serves the site

ns1.combell.euns3.combell.netns4.combell.net

combell.eu + combell.netanswers its DNS

aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx2.googlemail.com+3 more

Google Workspacereceives its email

TLS

upstream.nl

Let's Encryptissued its certificate

DNS Records

A 1

77.241.81.155

AAAA 1

2a00:1c98:1000:1112:0:4:4521:e8d5

MX 7

1aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com
10aspmx2.googlemail.com
10aspmx3.googlemail.com
10aspmx4.googlemail.com
10aspmx5.googlemail.com

TXT 3

google-site-verification=JWdnKjWr4K8Px2jCG009qG7_uJS5yENRaUVYd2ynbpo
v=spf1 include:_spf.mlsend.com a mx include:_spf.google.com include:spf.protection.outlook.com include:spf.byte.nl ~all
v=DMARC1;p=none;

NS 3

ns1.combell.eu
ns3.combell.net
ns4.combell.net

SOA 1

ns1.combell.eu hostmaster.upstream.nl

SRV 3

autodiscover-s.mailprotect.be:443 p1
imap.mailprotect.be:993 p1
smtp-auth.mailprotect.be:587 p1

TLS Certificates (3)

Common Name	Issuer	Expires
`upstream.nl`	C=US, O=Let's Encrypt, CN=YR2	Fri, 11 Sep 2026 04:21:31 +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 (1)

www.upstream.nl

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

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

Ed25519 Receipt

Receipt ID: rcpt_b48bc7c5f404f986
Output Hash: c2fea827154a01f5c93a3a868ab9de99e82a50cdfb15778513aee66e7049f89f
Signature: ed25519:a1920f0d065d2b6767ad7d4c1db8bab7b403f940af6644431dc98b4c92ff49215b9f5d88670e3dc5d69cfd94ab071547fda524f5705e3673ae2ff7d6a3236405
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/upstream.nl