CONTINUOUS INTERNET TELEMETRY24H DRIFT3,534 material changesacross 3,063 domains · +136 vs yesterdayDNS DRIFT27 domains changed DNS providertop destination cloudflare.comEMAIL DRIFT6 domains switched email providertop destination sendgw.comCERT DRIFT8 domains switched issuing CA24h · +1 vs yesterdayNOW9,711 curated domains not answeringlast probe, steady24H DRIFT3,534 material changesacross 3,063 domains · +136 vs yesterdayDNS DRIFT27 domains changed DNS providertop destination cloudflare.comEMAIL DRIFT6 domains switched email providertop destination sendgw.comCERT DRIFT8 domains switched issuing CA24h · +1 vs yesterdayNOW9,711 curated domains not answeringlast probe, steady

fourmilab.ch

Observed 2026-07-12T03:12:17.455Z (22h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now
Runs onCloudflare
Email byGoogle Workspace
IPv6 · 3 subdomains · tranco_20k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat fourmilab.ch actually stands on - every host below is a signed observation
fourmilab.ch
A / AAAA
52.28.236.02a05:d014:d43:3101:94aa:a276:e035:6a2a
Cloudflareserves the site
NS
ns-209.awsdns-26.comns-1463.awsdns-54.orgns-614.awsdns-12.netns-1903.awsdns-45.co.uk
awsdns-26.com + awsdns-54.org + moreanswers its DNS
MX
alt4.aspmx.l.google.comalt1.aspmx.l.google.comaspmx.l.google.comalt2.aspmx.l.google.com+1 more
Google Workspacereceives its email

HTTPS probe

ok Responding normally (2xx) 200 OK
HTTP status200
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time1347 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

  • 52.28.236.0

AAAA 1

  • 2a05:d014:d43:3101:94aa:a276:e035:6a2a

MX 5

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

TXT 2

  • v=spf1 include:_spf.google.com ip4:193.8.230.0/24 ip4:52.28.236.0 ip4:3.123.190.28 ~all
  • v=DMARC1; p=none

NS 4

  • ns-209.awsdns-26.com
  • ns-1463.awsdns-54.org
  • ns-614.awsdns-12.net
  • ns-1903.awsdns-45.co.uk

SOA 1

  • ns-1903.awsdns-45.co.uk awsdns-hostmaster.amazon.com

CAA 1

  • issue letsencrypt.org

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 fourmilab.ch. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID
5d8a291a-aa14-41fc-a1b4-590a4ee87e70
Output Hash
fa604b2cace58862f0fca1bd9e852e11820705fcfc5534dbd39ad8545df89f85
Signature
ed25519:4c2593b68dc01147aea9775d7e246e329414827e76b713b26a50585cb460a194c48a27a875610b70700d2a7b2e519e4a379889aa26a9a641e68cf4d4c86fa80e
Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent
(genesis)
Plane
fast
Verify this in your browser