updown.io
Observed Aug 10, 2026, 22:35 UTC (11h 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.
Up right now
Email byGoogle Workspace
Secured byLet's Encrypt
Also usesGoogle Search Console
IPv6 · 2 subdomains · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat updown.io actually stands on - every host below is a signed observation
updown.io
A / AAAA
178.63.21.1762a01:4f8:141:441a::2
2a01serves the site
NS
ns1.dnsimple.comns2.dnsimple-edge.netns3.dnsimple.comns4.dnsimple-edge.org
dnsimple.com + dnsimple-edge.net + moreanswers its DNS
MX
aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
updown.io
Let's Encryptissued its certificate
DNS Records
A 1
178.63.21.176
AAAA 1
2a01:4f8:141:441a::2
MX 5
1aspmx.l.google.com5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com
TXT 4
google-site-verification=UXom_nEwlgir08LzIgo1dQ_cedlfkSqRAT4PxnoD-rwgoogle-site-verification=aV1a9pUvFd5hoR5tRMDw0QB4QNbM7SJhFZAbJbfL-Msgoogle-site-verification=g7K17v0M_1AqrjBvFY5u_71rFtKNQl4WggV57eqnkPEv=spf1 include:_spf.google.com include:spf.mtasv.net include:_spf.mailersend.net ~all
NS 4
ns1.dnsimple.comns2.dnsimple-edge.netns3.dnsimple.comns4.dnsimple-edge.org
SOA 1
ns1.dnsimple.com admin.dnsimple.com
CAA 3
iodef "mailto:support@updown.io"issue "letsencrypt.org"issue "pki.goog"
DMARC_RECORDS 1
v=DMARC1; p=reject; rua=mailto:re+lkdlgufuxdn@dmarc.postmarkapp.com,mailto:qy8neki9j3hi@in.dmarced.eu ; aspf=r; pct=100
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
updown.io |
C=US, O=Let's Encrypt, CN=YE2 | Sun, 20 Sep 2026 05:01:24 +0000 |
YE2 |
C=US, O=ISRG, CN=Root YE | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YE |
C=US, O=Internet Security Research Group, CN=ISRG Root X2 | Thu, 02 Sep 2032 23:59:59 +0000 |
ISRG Root X2 |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +0000 |
Subdomains (2)
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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_d19824c548d63ad6- Output Hash
305945387a4b675a39cbc16376c9f36e301c829742d7d0fcc27c68e5efdc6b13- Signature
ed25519:6cfb8d9410d6726157c4e46433bd99a93f400a35d63ab752595c781eadaaa81a5fd16251bb9a84f96b20e95e41aee8a089faf1966b7f266f14946ebc0076600e- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast