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one.one.one.one

Public data as of 2026-10-31 14:10 UTC.

Get alerted the moment one.one.one.one goes down · uptime from 6 regions, SSL expiry and DNS changes. Free.Monitor everythingJust uptime

Their setup

HostingCloudflare

Detected from public DNS (MX, SPF, nameservers, verification records), IP ownership and response headers.

WebsiteUp200 in 15 ms
DomainRegisteredOne.com A/S
HostingCloudflareAS13335 · AU
Security headersGrade C4 of 6 present
Email protectionUnprotectedSPF ✗ · DMARC ✗
Subdomains0seen in certificate logs

What we found

  • !
    No HSTS headerBrowsers can be tricked into loading the site over unencrypted HTTP.
  • !
    No SPF recordAnyone can send email that claims to be from this domain.
  • !
    No DMARC recordReceivers have no policy for rejecting spoofed email from this domain.
  • i
    No mail servers (MX)This domain doesn’t receive email.
  • ✓
    Website is up (200 in 15 ms)Responding normally over HTTPS.

Is it down for everyone?

Runs a live request to https://one.one.one.one/ from US West, US East, Western Europe, Eastern Europe, Asia Pacific and Oceania.
Registrationvia WHOIS
RegistrarOne.com A/S
Raw WHOIS response
Server Name: one.one.one.one
IP Address:
Registrar: One.com A/S
Registrar WHOIS Server: http://whois.one.com
Registrar URL: www.one.com
>>> Last update of WHOIS database: 2026-10-31T14:10:57Z <<<

For more information on Whois status codes, please visit https://icann.org/epp

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Hosting & IP addresses
IP addressProviderLocationReverse DNS
1.0.0.1
1.0.0.0/24
CLOUDFLARENET - Cloudflare, Inc., US
AS13335
Brisbane, Queensland, Australiaone.one.one.one+ Port 443
1.1.1.1
1.1.1.0/24
CLOUDFLARENET - Cloudflare, Inc., US
AS13335
Brisbane, Queensland, Australiaone.one.one.one+ Port 443
2606:4700:4700::1111
2606:4700:4700::/48
CLOUDFLARENET - Cloudflare, Inc., US
AS13335
USone.one.one.one+ Port 443
Website & security headers200 · 15 ms
Final addresshttps://one.one.one.one/
Server & CDN
Server: cloudflare
CDN: Cloudflare
  • ✗strict-transport-security
  • ✓content-security-policydefault-src 'none'; script-src 'self' 'sha256-qcMXZ/ErgDG9p2Htysz9era6iflv8JXya41zOY0slSc=' 'sha256-ydM8qJ+T0Nd7adK8t34/cs0GvvCG0JBujCWzV3uML8E=' 'sha256-TzTXRDJBcbY1qVQheGb/4iSGqKPqCg6XVoerYf5BYMY='
  • ✓x-content-type-optionsnosniff
  • ✓x-frame-optionsDENY
  • ✓referrer-policystrict-origin-when-cross-origin
  • ✗permissions-policy
Email security
Mail servers (MX)None — this domain doesn’t receive email
SPFMissing
DMARCMissing
MTA-STSNot set
DKIMNo common selectors found (may still use a custom one)
All DNS records
TypeValue
A1.1.1.1+ Alert on change
A1.0.0.1+ Alert on change
AAAA2606:4700:4700::1111+ Alert on change
AAAA2606:4700:4700::1001+ Alert on change
TXT_27pzqheibkz3ec5g8loj1d4eppt1o4d+ Alert on change
Subdomains (0)from certificate transparency logs

No certificates found for this domain.

Statance uses the IP2Location LITE database for IP geolocation.