startmail.com

Observed 2026-07-14T22:13:49.521Z (13h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byZendesk

Registered withHosting Concepts B.V. d/b/a Registrar.eu

Also usesGoogle Search Console

IPv6 · 7 subdomains · tranco_40k

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

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

startmail.com

A / AAAA

145.131.90.152145.131.90.1362a02:22a0:bbb6:1d00::1002:4432a02:22a0:bbb6:1d00::1001:443

Cloudflareserves the site

dns31.cloudns.netdns32.cloudns.netdns33.cloudns.netdns34.cloudns.net

cloudns.netanswers its DNS

mx1.startmail.commx4.startmail.commx3.startmail.commx2.startmail.com

Zendeskreceives its email

HTTPS probe

redirect Redirecting (3xx) 301 → https://www.startmail.com/

HTTP status301

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time160 ms

DNS resolutionNOERROR

Redirect chain

https://www.startmail.com/

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 2

145.131.90.152
145.131.90.136

AAAA 2

2a02:22a0:bbb6:1d00::1002:443
2a02:22a0:bbb6:1d00::1001:443

MX 4

10mx1.startmail.com
30mx4.startmail.com
20mx3.startmail.com
10mx2.startmail.com

TXT 6

google-site-verification=C657dqp16Y0cGcLHCmZHmMsaaIVeprybtgiRi_DukZE
google-site-verification=p92r087LlIf2FNd7HXto_b9YGxOJ7kZgzctnVDneKxI
v=spf1 include:spf.startmail.com include:mail.zendesk.com ~all
v=DMARC1; p=quarantine; sp=quarantine; adkim=r; aspf=r; pct=100
v=STSv1; id=2023100501
v=DNSSEC1; (detected)

NS 4

dns31.cloudns.net
dns32.cloudns.net
dns33.cloudns.net
dns34.cloudns.net

SOA 1

dns31.cloudns.net support.cloudns.net

CAA 3

iodef mailto:root@startmail.com
issuewild letsencrypt.org
issue letsencrypt.org

TLS Certificates (0)

None.

Subdomains (7)

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

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

Ed25519 Receipt

Receipt ID: 4b9c722d-feab-4ff8-b860-f80e307ca9e4
Output Hash: 0bcce5e67ea51f276d43b9cd2951b97665e7843199ef3a20729bfe92a9fcf4a6
Signature: ed25519:8daebb6afe4b9c2f1a748b4f0cf5fca49682d0dbe42f1ba499b6f23181ef9ed3e0e8996e184e0a9384318f8725652800556d3d93a580a8d39273bf1415556305
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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