simplex.im

Observed 2026-07-12T16:33:07.151Z (11h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

IPv6 · 3 subdomains · tranco_40k

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

INFRASTRUCTURE MAPwhat simplex.im actually stands on - every host below is a signed observation

simplex.im

A / AAAA

172.232.156.212600:3c09::f03c:95ff:fe28:50e2

Cloudflareserves the site

ns5.linode.comns2.linode.comns1.linode.comns3.linode.com+1 more

linode.comanswers its DNS

mail.simplex.im

simplex.imreceives its email

HTTPS probe

ok Responding normally (2xx) 200 OK

HTTP status200

Servercloudflare

TLS protocolHTTP/3

TLS issuernot observed

Behind Cloudflareyes

Response time1017 ms

DNS resolutionNOERROR

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

172.232.156.21

AAAA 1

2600:3c09::f03c:95ff:fe28:50e2

MX 1

10mail.simplex.im

TXT 2

v=spf1 mx -all ra=postmaster
v=DMARC1; p=reject; rua=mailto:postmaster@simplex.im; ruf=mailto:postmaster@simplex.im

NS 5

ns5.linode.com
ns2.linode.com
ns1.linode.com
ns3.linode.com
ns4.linode.com

SOA 1

ns1.linode.com chat.simplex.chat

TLS Certificates (0)

None.

Subdomains (3)

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 simplex.im. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: b6735c53-76e0-4790-9e1d-2d36a739a24b
Output Hash: ee77968f4d84ebb3dffa0ec0dfde59e2f68d97b1d92e9689b12f919728740c62
Signature: ed25519:b16a058b03fa6810eabeb113962891797b2bef1e067fd453630ef12708bbcbabcfebe221ad30753bb040e64fb9180fa7c387713f48f0128aaa90c3ff2c165807
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/simplex.im