basecamp.com

Observed 2026-07-13T00:02:10.282610234+00:00 (5h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byMailchimp

Secured byGoogle Trust Services

Registered withCloudflare, Inc.

Also uses1PasswordZoomAtlassianGoogle Search Console

dev_tools

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

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

basecamp.com

A / AAAA

104.18.15.58104.18.14.58

Cloudflareserves the site

seamus.ns.cloudflare.comtina.ns.cloudflare.com

cloudflare.comanswers its DNS

mx1.basecamp.commx2.basecamp.com

Mailchimpreceives its email

TLS

basecamp.com

Google Trust Servicesissued its certificate

DNS Records

A 2

104.18.15.58
104.18.14.58

MX 2

10mx1.basecamp.com
10mx2.basecamp.com

TXT 9

1password-site-verification=KFPOHERRZBGW7L3YPQHGBWHYGA
MS=3DB9BFF0E232F4C87086BE490FC2D6A8337B46C8
ZOOM_verify_m3iG61YFQ6WjpVxQFErO5w
atlassian-domain-verification=jDcnbDUp4Eqr8vcG6rwzJC/AiL4ryyQCoTDiAKjKnP7rzlvnA4akV4QxvGnUaMS8
google-site-verification=hpEwalR-8wi_nPf7uplZO5rjptEVj6gENHyy58ULIz4
google-site-verification=w-WUrrtkx2vDc--zrb0hxs4rDolhvqkW1Fj-muAr-YM
v=spf1 include:_spf.basecamp.com include:servers.mcsv.net -all
v=DMARC1; p=quarantine; adkim=r; aspf=r; ri=3600; sp=quarantine; fo=1;
v=BIMI1; l=https://basecamp.com/bimi.svg; a=;

NS 2

seamus.ns.cloudflare.com
tina.ns.cloudflare.com

SOA 1

seamus.ns.cloudflare.com dns.cloudflare.com

CAA 13

iodef "mailto:sysadmins@37signals.com"
issue "amazon.com"
issue "comodoca.com"
issue "digicert.com; cansignhttpexchanges=yes"
issue "globalsign.com"
issue "letsencrypt.org"
issue "pki.goog; cansignhttpexchanges=yes"
issue "ssl.com"
issuewild "comodoca.com"
issuewild "digicert.com; cansignhttpexchanges=yes"

TLS Certificates (3)

Common Name	Issuer	Expires
`basecamp.com`	C=US, O=Google Trust Services, CN=WE1	Tue, 06 Oct 2026 06:03:30 +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 basecamp.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: ff8a8c29-fc59-47e0-a5de-db30051bfaff
Output Hash: 9503601ef5b9a67c169393654bcf540a0f1646fd9cfef81d1282f17e34f7698a
Signature: ed25519:96d21dab5466cc9daae4229e083f5a88d3ba836f3692675604f9c3b6b058900d351083c67c5a98cf59a76f56781890f42af853fc214490c21a854338d7c3dd02
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/basecamp.com