ef.com

Observed 2026-07-13T00:15:35.758133060+00:00 (1d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byMicrosoft 365

Secured byCorporation Service Company

Registered withCSC Corporate Domains, Inc.

Also usesZoomAtlassianGoogle Search ConsoleLinearMiroNotion

DNSSEC on · IPv6 · push_legacy

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

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

ef.com

A / AAAA

104.18.43.76172.64.144.1802a06:98c1:310d::6812:2b4c2a06:98c1:3103::ac40:90b4

Cloudflareserves the site

jihoon.ns.cloudflare.comtricia.ns.cloudflare.com

cloudflare.comanswers its DNS

efcom.mail.protection.outlook.com

Microsoft 365receives its email

TLS

*.ef.com

Corporation Service Companyissued its certificate

DNS Records

A 2

104.18.43.76
172.64.144.180

AAAA 2

2a06:98c1:310d::6812:2b4c
2a06:98c1:3103::ac40:90b4

MX 1

0efcom.mail.protection.outlook.com

TXT 46

SFMC-ItSDn8I-_WPvDgP5QDjuQCbSdPKgZIJJcL1iuKfk
Sendinblue-code:3b4d41269b4df351be1c8f1189329766
ZOOM_verify_i21AZ_z1RiCfS0dEosj0uw
ZQjWmyMMEAcM2JUKuBCQNaGG/p5Fk3h8ei5G1YIKdmOrNx6GiphKRqgyb3KAf7mRUeIspkoX+L2esywDqTPsoA==
_361l8dnf91sfr841ds82d3je2fy35t9
_n1erml6nlo4atf8dfskj3fgpy4wnlaq
adobe-idp-site-verification=e647ef23ee05d9b047987fd9e8c8cd2b519bc84349e1f6ddb99d6a132d69d054
aliyun-site-verification=88317b51-c089-4094-be4c-ac9b98500deb
amazonses:V3vAdLKApvqHOoy6diFc5VRsGzfi3z2tGE0FPg/IDDs=
amazonses:a677pw4glw5rFrEbwGscSc2VElj6Q7gjDYvGjD+Ok8s=

NS 2

jihoon.ns.cloudflare.com
tricia.ns.cloudflare.com

SOA 1

jihoon.ns.cloudflare.com dns.cloudflare.com

SRV 2

xmpp.ef.com:5269 p0
_dc-srv.988996d7b81b._autodiscover._tcp.ef.com:443 p0

TLS Certificates (4)

Common Name	Issuer	Expires
`*.ef.com`	C=US, O=Corporation Service Company, CN=Corporation Service Company RSA OV SSL CA 2	Tue, 16 Feb 2027 23:59:59 +0000
`Corporation Service Company RSA OV SSL CA 2`	C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication Root R46	Sun, 13 May 2035 23:59:59 +0000
`Sectigo Public Server Authentication Root R46`	C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority	Mon, 18 Jan 2038 23:59:59 +0000
`USERTrust RSA Certification Authority`	C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services	Sun, 31 Dec 2028 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 ef.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 8c43230b-3f4a-4c8a-9713-06ccc7a84156
Output Hash: 464de489490664df397c49648c333a6cf8a917d3c6d19e9f59afbadc3516975f
Signature: ed25519:f057e906192719f7e52bd32b2e98743bed4cd7f88dbf0b5524474ecc0c1ac9114ad805ea58a022e4c273e625cedf884bf190cbb5f773baaf20b2eeb4c816aa0a
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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