guttmacher.org

Observed Jul 22, 2026, 00:51 UTC (2d 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 onCloudflare

Email bySendGrid

Secured byGoogle Trust Services

Registered withNetwork Solutions, LLC

Also usesAtlassianGoogle Search Console

IPv6 · tranco_40k

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

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

guttmacher.org

A / AAAA

172.66.148.171104.20.23.2192606:4700:10::6814:17db2606:4700:10::ac42:94ab

Cloudflareserves the site

albert.ns.cloudflare.comaria.ns.cloudflare.com

cloudflare.comanswers its DNS

mx1-us1.ppe-hosted.commx2-us1.ppe-hosted.com

SendGridreceives its email

TLS

guttmacher.org

Google Trust Servicesissued its certificate

DNS Records

A 2

172.66.148.171
104.20.23.219

AAAA 2

2606:4700:10::6814:17db
2606:4700:10::ac42:94ab

MX 2

10mx1-us1.ppe-hosted.com
20mx2-us1.ppe-hosted.com

TXT 11

6ih0frca14bp14tdbrdvtm3tgu
MS=ms74030053
SEEYGjrshf8SS4JD5YaRwGLnJWwTDobulD5JVCBBFcpKJoZcPX7gjpRHoPSE+71MIR+BYc6yJenw/FEIcxQcjQ==
a5d2j6buh5tst7a4g69n7v91jl
atlassian-domain-verification=q1pfuxKCaQwKY84GlWpuslyZwZCBAWmBoKo0OoMILQGzMY4zmadRJVsCzFNdmg1g
google-site-verification=J7mIRl4eaXH69cqkNVb0sctNUCwOIFv6uXJfcTnoP4A
ppe-024b692baa5655a5b19e50bd9fbc727b90668585
ppe-ae8234b71a41864bf15c
qr0qf5jpg5qn0guqa36n6tvebb
v=spf1 a mx a:guttmacher.org a:dispatch-us.ppe-hosted.com ip4:100.33.141.99 ip4:205.201.128.0/20 ip4:198.2.128.0/18 include:servers.mcsv.net include:spf.protection.outlook.com include:spf.mandrillapp.com include:_spf.psm.knowbe4.com include:mailgun.org include:sendgrid.net -all

NS 2

albert.ns.cloudflare.com
aria.ns.cloudflare.com

SOA 1

albert.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (3)

Common Name	Issuer	Expires
`guttmacher.org`	C=US, O=Google Trust Services, CN=WE1	Fri, 02 Oct 2026 05:17:31 +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 guttmacher.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_0534173aaee1ac77
Output Hash: 377a1a4827122c93205ee966f0607b9b06f74b1a558fef4f03e5eb7bd58680e0
Signature: ed25519:78e5fac70590bf55f9c2381af70c4e17194ef4e67ca0eee0ad62dbb45c7f99b3b0627a1abf2b1cc8893071bc330e43715be9c84bca98eb57e21e34350f89da09
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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