hochtief.com

Observed Jul 27, 2026, 20:33 UTC (18h 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

Runs onCSL Computer Service Langenbach

Email byMicrosoft 365

Secured byDeutsche Telekom Security GmbH

Registered withCSL Computer Service Langenbach GmbH d/b/a joker.com

Also usesGoogle Search Console

1 subdomain · construction

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

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

hochtief.com

A / AAAA

194.245.34.140

CSL Computer Service Langenbachserves the site

z.ns.joker.comy.ns.joker.comx.ns.joker.com

joker.comanswers its DNS

hochtief-com.mail.protection.outlook.com

Microsoft 365receives its email

TLS

hochtief.de

Deutsche Telekom Security GmbHissued its certificate

DNS Records

A 1

194.245.34.140

MX 1

0hochtief-com.mail.protection.outlook.com

TXT 3

v=spf1 ip4:35.80.141.6 ip4:44.229.121.55 ip4:18.168.51.200 ip4:18.168.140.58 ip4:3.123.206.219 ip4:3.68.129.51 ip4:3.105.238.148 ip4:3.106.50.25 ip4:18.180.127.81 ip4:54.64.30.13 include:spf.protection.outlook.com include:sendgrid.net -all
google-site-verification=JXDndHzsA4gfUY6_Ip6-j-SZtCYTRziEseGW9okgSDY
v=DMARC1; p=reject;

NS 3

z.ns.joker.com
y.ns.joker.com
x.ns.joker.com

SOA 1

x.ns.joker.com hostmaster.joker.com

SRV 1

webmail.hochtief.de:443 p0

CAA 2

iodef "mailto:ciso@hochtief.de"
issue "telesec.de"

TLS Certificates (2)

Common Name	Issuer	Expires
`hochtief.de`	C=DE, O=Deutsche Telekom Security GmbH, CN=TeleSec Business TLS-CA 2022	Wed, 10 Mar 2027 23:59:59 +0000
`TeleSec Business TLS-CA 2022`	C=DE, O=T-Systems Enterprise Services GmbH, 2.5.4.11=T-Systems Trust Center, CN=T-TeleSec GlobalRoot Class 2	Mon, 21 Jun 2032 23:59:59 +0000

Subdomains (1)

www.hochtief.com

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

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

Ed25519 Receipt

Receipt ID: rcpt_4eea21f7c572796e
Output Hash: 230fc3fe9e443bb570c034a43adb1cc19af5e951566dd4761f078f2840acdb29
Signature: ed25519:ac16a9bdeeceb55dc1ee4801fe496ffb7d4b770b4556efaaceae5c4c1cfc7a6d292006558d516b7675bf52e540f138208b83db1c37d9ff6cc0e807cfbb69a802
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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