periodicsystem.org
Observed Jul 22, 2026, 01:17 UTC (19h 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
Runs onNew Dream Network
Secured byLet's Encrypt
Registered withThe Registrar Company B.V.
IPv6 · 1 subdomain · tranco_40k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat periodicsystem.org actually stands on - every host below is a signed observation
periodicsystem.org
A / AAAA
75.119.206.2442607:f298:6:a014::caf:8f8c
New Dream Networkserves the site
NS
ns2.dreamhost.comns3.dreamhost.comns1.dreamhost.com
dreamhost.comanswers its DNS
MX
mx2.mailchannels.netmx1.mailchannels.net
mailchannels.netreceives its email
TLS
www.periodicsystem.org
Let's Encryptissued its certificate
DNS Records
A 1
75.119.206.244
AAAA 1
2607:f298:6:a014::caf:8f8c
MX 2
0mx2.mailchannels.net0mx1.mailchannels.net
TXT 1
v=spf1 mx include:netblocks.dreamhost.com include:relay.mailchannels.net -all
NS 3
ns2.dreamhost.comns3.dreamhost.comns1.dreamhost.com
SOA 1
ns1.dreamhost.com hostmaster.dreamhost.com
SRV 1
autoconfig.dreamhost.com:443 p5
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.periodicsystem.org |
C=US, O=Let's Encrypt, CN=YR2 | Mon, 14 Sep 2026 06:40:41 +0000 |
YR2 |
C=US, O=ISRG, CN=Root YR | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YR |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +0000 |
Subdomains (1)
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 receiptPut the receipt on your own site. A live badge showing what DomainDrift observes and signs for periodicsystem.org. It updates itself. It attests a signed observation - not that the site is safe.
<a href="https://domaindrift.io/t/periodicsystem.org">
<img src="https://domaindrift.io/badge/periodicsystem.org.svg"
width="300" height="64" alt="DomainDrift signed observations for periodicsystem.org">
</a>
Ed25519 Receipt
- Receipt ID
rcpt_72832c0c668ea7ff- Output Hash
d9b92cc365f6977a4fabaf35c873ae3a7d7df56ffbc925c16ed40a383f24b6f3- Signature
ed25519:47498e28c3140ad689a53334de9f53fddb118ec525f9b1bb1012b5dc344c17c4df1a3d443643883b95ddc47fbb0d5f0bc2d3e06bb9ecf6cebe28ac934ef41c05- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast