iupac.org

Observed Jul 21, 2026, 16:23 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 byMicrosoft 365

Secured byLet's Encrypt

Registered withPDR Ltd. d/b/a PublicDomainRegistry.com

Also usesGoogle Search Console

IPv6 · tranco_100k

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

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

iupac.org

A / AAAA

104.21.18.185172.67.183.302606:4700:3035::6815:12b92606:4700:3037::ac43:b71e

Cloudflareserves the site

clara.ns.cloudflare.comgabe.ns.cloudflare.com

cloudflare.comanswers its DNS

iupac-org.mail.protection.outlook.com

Microsoft 365receives its email

TLS

iupac.org

Let's Encryptissued its certificate

DNS Records

A 2

104.21.18.185
172.67.183.30

AAAA 2

2606:4700:3035::6815:12b9
2606:4700:3037::ac43:b71e

MX 1

0iupac-org.mail.protection.outlook.com

TXT 6

citrix-verification-code=668e156b-f5d3-430e-9944-f1d4385d043e
google-site-verification=4YRkSFebiF2csWXGF_AsWmu7qlFjvbMNyoBra27xCpU
logmein-verification-code=d7eb98f7-6d45-4cba-9f6b-7c05d84db067
v=spf1 ip4:216.37.42.18 include:servers.mcsv.net include:relay.mailchannels.net include:spf.protection.outlook.com -all
zoho-verification=zb1507925622032.zmverify.zoho.com
v=DMARC1; p=quarantine; rua=mailto:2910d82e0b504f9d91edf1674baf1470@dmarc-reports.cloudflare.net,mailto:dmarcreports@iupac.org

NS 2

clara.ns.cloudflare.com
gabe.ns.cloudflare.com

SOA 1

clara.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (4)

Common Name	Issuer	Expires
`iupac.org`	C=US, O=Let's Encrypt, CN=YE2	Wed, 02 Sep 2026 22:38:24 +0000
`YE2`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +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 iupac.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_d541e4b1cdf7bef3
Output Hash: 0b0084a8743733b26407b79bdeb2529ee8160c43b3f21518d238a8ad1f290b72
Signature: ed25519:600811e175b34f4f129a2b667dcfc5dfd095ba80d50e065696a1b335a25b9b43bf2f61fcf3e1d95f28cc0e0542b343c4ea57e411a6aed2e3424ab6c2285f6808
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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