groups.io

Observed 2026-07-18T13:12:26.219497423+00:00 (2h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onAkamai Connected Cloud

Secured byLet's Encrypt

Also usesGoogle Search Console

tranco_20k

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

INFRASTRUCTURE MAPwhat groups.io actually stands on - every host below is a signed observation

groups.io

A / AAAA

173.255.221.19445.79.81.153

Akamai Connected Cloudserves the site

dns1.groups.iodns2.groups.io

groups.ioanswers its DNS

lb01.groups.iolb02.groups.io

groups.ioreceives its email

TLS

groups.io

Let's Encryptissued its certificate

DNS Records

A 2

173.255.221.194
45.79.81.153

MX 2

10lb01.groups.io
10lb02.groups.io

TXT 3

google-site-verification=cIdgZ-hBu3RiSGae0xG2qUDmQY5hS3dsg6qUGxAZjaE
v=spf1 include:_spf.groups.io -all
v=DMARC1;p=none;sp=none;rua=mailto:dmarcreport@groups.io;ruf=mailto:dmarcfailure@groups.io

NS 2

dns1.groups.io
dns2.groups.io

SOA 1

dns1.groups.io hostmaster.groups.io

CAA 1

issue "letsencrypt.org"

TLS Certificates (3)

Common Name	Issuer	Expires
`groups.io`	C=US, O=Let's Encrypt, CN=YR1	Thu, 10 Sep 2026 13:41:36 +0000
`YR1`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	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 groups.io. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 7fbbfbd1-0abd-43b4-9a5c-947c0186a7f4
Output Hash: 5ac0b8b1b384951e805c367cd121122f878ccf89611860be24ee6d902577bab7
Signature: ed25519:b285f3264cc6a61036c634ed06404a6a4b3e900cbe4155292503b6d6dfd4c56ff258d717d95cedf7dbc6a6661eef47d00d98b2292f38e0cd70fed3b2d2e4fb0c
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/groups.io