amsterdam.org

Observed Jul 23, 2026, 22:32 UTC (1d 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

1 subdomain · tranco

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

INFRASTRUCTURE MAPwhat amsterdam.org actually stands on - every host below is a signed observation

amsterdam.org

A / AAAA

87.233.65.43

unattributedserves the site

ns0.transip.netns1.transip.nlns2.transip.eu

transip.net + transip.nl + moreanswers its DNS

ASPMX.L.GOOGLE.COMALT1.ASPMX.L.GOOGLE.COMALT2.ASPMX.L.GOOGLE.COMASPMX2.GOOGLEMAIL.COM+1 more

Google Workspacereceives its email

TLS

amsterdam.org

Let's Encryptissued its certificate

DNS Records

A 1

87.233.65.43

MX 5

1ASPMX.L.GOOGLE.COM
5ALT1.ASPMX.L.GOOGLE.COM
5ALT2.ASPMX.L.GOOGLE.COM
10ASPMX2.GOOGLEMAIL.COM
10ASPMX3.GOOGLEMAIL.COM

TXT 4

v=spf1 mx a ip4:185.89.7.70 include:_spf.google.com ~all
google-site-verification=q8lXtmIW3ruznxOGaC8QdAi8RpkpUUo8RNKUTGdFfKI
google-site-verification=sQfwP92jjt_uuBBzym--wYk0Qe7ZgQcbG8xmaawZHlI
v=DMARC1; p=quarantine;

NS 3

ns0.transip.net
ns1.transip.nl
ns2.transip.eu

SOA 1

ns0.transip.net hostmaster.transip.nl

TLS Certificates (3)

Common Name	Issuer	Expires
`amsterdam.org`	C=US, O=Let's Encrypt, CN=YR1	Wed, 02 Sep 2026 03:27:28 +0000
`YR1`	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.amsterdam.org

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

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

Ed25519 Receipt

Receipt ID: rcpt_3ff859ed1d6bdb98
Output Hash: e6fdb7f9d7e96cfc8a7809b58d77ddde30222ddfbe182f64f5d9bfb8647d2019
Signature: ed25519:af95d26d6b8e359dc0698d81249af48246ff6983581e2276de9c3015a031977dd1ddb8655fe6ed3bdd2a8fa76f60d712ad068c30174ea4c864c7e87007176207
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/amsterdam.org