sei.org

Observed Jul 21, 2026, 17:36 UTC (1d 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 byGoogle Trust Services

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 sei.org actually stands on - every host below is a signed observation

sei.org

A / AAAA

104.26.5.167104.26.4.167172.67.73.2492606:4700:20::ac43:49f9+2 more

Cloudflareserves the site

anahi.ns.cloudflare.comdrew.ns.cloudflare.com

cloudflare.comanswers its DNS

sei-org.mail.protection.outlook.com

Microsoft 365receives its email

TLS

sei.org

Google Trust Servicesissued its certificate

DNS Records

A 3

104.26.5.167
104.26.4.167
172.67.73.249

AAAA 3

2606:4700:20::ac43:49f9
2606:4700:20::681a:4a7
2606:4700:20::681a:5a7

MX 1

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

TXT 12

9tzp0yqn3mhqj24z6gwkhq2p82y44k1h
amazonses:ou+oxpT6WTWLXdQTUcfjPetuwG4H1LCyAvC3ND2FCgo=
anthropic-domain-verification-ads1p3=tg8abxB7entc0sV5uHi7Bvwv1
apple-domain-verification=ItRpVfLmxVcHgwWs
asv=baac7330149e7f8820d6793460edc04d
brevo-code:da5a0b6f72c373d7c107303cb5eb2590
canva-site-verification=db3Q-dNU05vMaqV46yfbww
google-site-verification=07PTBoMfx92m_OAf_20rxjnxHW-ZqgHMaq_gsQYehKY
google-site-verification=4U-CO-HtPLEF1ONVqjHkQ4YHMFusgfxokRY9mDHTNp0
google-site-verification=FPn-7Q8BTy11LL2zVH21ZBHurY3wf5KsKTEJU1NjVKk

NS 2

anahi.ns.cloudflare.com
drew.ns.cloudflare.com

SOA 1

anahi.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (3)

Common Name	Issuer	Expires
`sei.org`	C=US, O=Google Trust Services, CN=WE1	Tue, 22 Sep 2026 05:43:52 +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 sei.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_02e8081bd5477aa2
Output Hash: 7c8affc1e066739ef3869e528eaeb55bc8127c346c064fbae011675f91649a9f
Signature: ed25519:e706a49d6afb299651112719b4a0ee8666f4c0d7fe067a729d564834e8a852d41d346a5d1bef331fe77e7b8272c18172442d4b4e42fb2c8f57190874c6ad6400
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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