stackoverflow.co

Observed 2026-07-13T10:27:42.564Z (17h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Also usesGoogle Search ConsoleFacebook/Meta

4 subdomains · tranco_40k

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

INFRASTRUCTURE MAPwhat stackoverflow.co actually stands on - every host below is a signed observation

stackoverflow.co

A / AAAA

3.33.186.13515.197.167.90

Cloudflareserves the site

dns1.p02.nsone.netdns3.p02.nsone.netdns4.p02.nsone.netdns2.p02.nsone.net

nsone.netanswers its DNS

alt2.aspmx.l.google.comalt3.aspmx.l.google.comaspmx.l.google.comalt1.aspmx.l.google.com

Google Workspacereceives its email

HTTPS probe

ok Responding normally (2xx) 200 OK

HTTP status200

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time15 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 2

3.33.186.135
15.197.167.90

MX 4

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

TXT 7

v=spf1 include:_spf.google.com ~all
adobe-idp-site-verification=25ba5203f3687c9cd6ee3223ee5de1528917828d1da3ebd3bd9a44094cbfc4ac
google-site-verification=NihQgsb9hY_bT_4JYEJSkeLKgkAJyPFFDEqD82p76ug
google-site-verification=X9QXJIDLaXpZ5fQgAqrgCNUD5o4P_rRk5JI2YELPqf4]
facebook-domain-verification=y59jadh8mrlmq9v3u8ff5z42rd7723
v=DMARC1; p=reject; sp=quarantine; pct=100; rua=mailto:dmarc-aggregates@stackoverflow.com; ruf=mailto:dmarc-forensics@stackoverflow.com; fo=1
v=DKIM1; (detected)

NS 4

dns1.p02.nsone.net
dns3.p02.nsone.net
dns4.p02.nsone.net
dns2.p02.nsone.net

SOA 1

dns1.p02.nsone.net domains+netlify.netlify.com

CAA 7

issuewild letsencrypt.org
issuewild digicert.com
iodef mailto:sysadmin-team@stackoverflow.com
issue digicert.com
issue comodoca.com
issue letsencrypt.org
issuewild comodoca.com

TLS Certificates (0)

None.

Subdomains (4)

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 stackoverflow.co. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 4b7559fe-4d38-448f-ae0d-80248f7fe3bc
Output Hash: 27826c280717bc6bf6f3efbbb15e6b1630acd5396bcd7098c2e5f4c4e8f7997b
Signature: ed25519:d3e4a1ed89c784a0edf68e12a74354cc1f72416adbcf2ffb40e20cf369b11017f6915372d0c0d9fb4fb1bb5e0a1c1e6873b54dd26268463b89095dc211b68e09
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/stackoverflow.co