arbitrum.foundation

Observed Jul 24, 2026, 08:33 UTC (17h 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.

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Up right now

Email byGoogle Workspace

Secured byLet's Encrypt

tranco

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

INFRASTRUCTURE MAPwhat arbitrum.foundation actually stands on - every host below is a signed observation

arbitrum.foundation

A / AAAA

76.76.21.21

unattributedserves the site

gracie.ns.cloudflare.comlouis.ns.cloudflare.com

cloudflare.comanswers its DNS

aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

arbitrum.foundation

Let's Encryptissued its certificate

DNS Records

A 1

76.76.21.21

MX 5

1aspmx.l.google.com
10alt3.aspmx.l.google.com
10alt4.aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com

TXT 2

v=spf1 include:_spf.google.com ~all
v=DMARC1; p=reject; rua=mailto:dmarc@arbitrum.foundation

NS 2

gracie.ns.cloudflare.com
louis.ns.cloudflare.com

SOA 1

gracie.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (2)

Common Name	Issuer	Expires
`arbitrum.foundation`	C=US, O=Let's Encrypt, CN=R12	Mon, 24 Aug 2026 01:21:52 +0000
`R12`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Fri, 12 Mar 2027 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.

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Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for arbitrum.foundation. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_8c40d796f72370a9
Output Hash: 8b70bb9e9e89223107c3cd3d3abc4a3d35e3b4e09c7b9d0cb4730f27e7669689
Signature: ed25519:c865a1eb7cb5905fed1a996220c312df13168c295345784e61814b98266d3796779035f81d26cd6afe45eecc43543e3fee0037da1cdb12cb12ce3845d5d31e08
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/arbitrum.foundation