holzkern.com

Observed Jul 28, 2026, 17:28 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

Guarded by a firewall

Runs onCloudflare

Email byGoogle Workspace

Secured byGoogle Trust Services

Also usesFacebook/MetaGoogle Search ConsoleNotion

IPv6 · tranco_100k

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

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

holzkern.com

A / AAAA

172.66.41.9172.66.42.2472606:4700:3108::ac42:29092606:4700:3108::ac42:2af7

Cloudflareserves the site

val.ns.cloudflare.comwatson.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

TLS

holzkern.com

Google Trust Servicesissued its certificate

DNS Records

A 2

172.66.41.9
172.66.42.247

AAAA 2

2606:4700:3108::ac42:2909
2606:4700:3108::ac42:2af7

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 9

Sendinblue-code:c78a27eb3acbeca02946581ce82d814f
apple-domain-verification=F4kyRmiKSpAEDMfI
facebook-domain-verification=v60cfkpn3kurpw29ddmjqhaq2juuao
google-site-verification=BbvIgfxTFEannhnNuJDnwmH9WS05JZHn8Qn31YkUolI
google-site-verification=RWgMMAiwmeTXMJRLgArq2ZodYO41gDP9n0jnXLvpU_c
google-site-verification=g6AdEQi4HQFBy9e_m6C6zWWmc_qcoPOCTklsxjvHwrg
notion-domain-verification=kLUJLWDlec6JmsXJLApgnRMeOLMqMATKknmbIIhJVGk
v=spf1 mx include:sendgrid.net include:_spf.google.com include:1584923d6.spf2.netcorecloud.net ip4:185.41.28.0/22 ip4:94.143.16.0/21 ip4:185.24.144.0/22 ip4:153.92.224.0/19 ip4:213.32.128.0/18 ip4:185.107.232.0/22 ip4:77.32.128.0/18 ip4:77.32.192.0/19 ip4:212.146.192.0/18 ip4:172.246.0.0/18 ip4:206.55.144.0/20 ip4:216.221.160.0/19 ip4:76.223.128.0/19 ip4:54.240.96.0/19 ip4:54.240.64.0/19 ip4:76.223.176.0/20 ip4:23.251.224.0/19 ip4:23.249.208.0/20 ip4:69.169.224.0/20 ip4:54.240.0.0/18 ip4:199.127.232.0/22 ip4:199.255.192.0/22 ip4:149.202.180.44 ip4:149.202.164.78 ip4:195.154.60.200 ip4:51.15.253.103 ip4:51.15.34.108 ip4:51.15.217.91 ip4:51.15.86.245 ip4:178.32.127.170 ip4:91.121.218.27 ip4:178.33.110.46 ip4:94.23.165.77 ip4:94.23.147.222 ip4:178.33.113.205 ip4:91.121.219.64 ip4:94.23.165.65 ip4:94.23.148.7 ip4:87.98.152.90 ip4:91.121.55.57 ip4:178.32.44.31 ip4:141.95.157.217 ip4:141.94.194.217 ip4:51.91.164.78 ip4:217.182.241.115 ip4:141.94.255.216 ip4:141.94.241.170 ip4:35.158.71.15 ip4:35.158.67.243 ip4:3.12...[truncated]
v=DMARC1; p=reject; sp=reject; rua=mailto:c02d89a8de814cef86f9b62e0cf9b55b@dmarc-reports.cloudflare.net; rf=afrf; pct=100; ri=86400

NS 2

val.ns.cloudflare.com
watson.ns.cloudflare.com

SOA 1

val.ns.cloudflare.com dns.cloudflare.com

CAA 12

issue "amazonaws.com"
issue "comodoca.com"
issue "digicert.com; cansignhttpexchanges=yes"
issue "letsencrypt.org"
issue "pki.goog; cansignhttpexchanges=yes"
issue "ssl.com"
issuewild "amazonaws.com"
issuewild "comodoca.com"
issuewild "digicert.com; cansignhttpexchanges=yes"
issuewild "letsencrypt.org"

TLS Certificates (3)

Common Name	Issuer	Expires
`holzkern.com`	C=US, O=Google Trust Services, CN=WE1	Thu, 08 Oct 2026 03:52:39 +0000
`WE1`	C=US, O=Google Trust Services LLC, CN=GTS Root R4	Tue, 20 Feb 2029 14:00:00 +0000
`GTS Root R4`	C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA	Fri, 28 Jan 2028 00:00:42 +0000

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

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

Ed25519 Receipt

Receipt ID: rcpt_d3b67183facd7236
Output Hash: 36e1bc14b20c0dbbae4665e31d8d782ae0c7a0f7eaa0b3ae6faba72241aad35b
Signature: ed25519:c594d0409d96a919176e2040ecc9ddec2483d9266f3208799dbf7837e312f3aa4bb286513d24f9db968d85197b2a4b8dfa50e7c859496f22d26c63192bfd3804
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/holzkern.com