rootstudy.co.kr

Observed Jul 26, 2026, 11:43 UTC (2d 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.

Verify this receipt yourself + Watch this domain

Up right now

Secured byLet's Encrypt

domcop

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

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

rootstudy.co.kr

A / AAAA

216.150.16.1216.150.1.65

unattributedserves the site

ns1.vercel-dns.comns2.vercel-dns.com

vercel-dns.comanswers its DNS

TLS

rootstudy.co.kr

Let's Encryptissued its certificate

DNS Records

A 2

216.150.16.1
216.150.1.65

TXT 1

v=DMARC1; p=none;

NS 2

ns1.vercel-dns.com
ns2.vercel-dns.com

SOA 1

ns1.vercel-dns.com hostmaster.nsone.net

CAA 3

issue "letsencrypt.org"
issue "pki.goog"
issue "sectigo.com"

TLS Certificates (3)

Common Name	Issuer	Expires
`rootstudy.co.kr`	C=US, O=Let's Encrypt, CN=YR1	Fri, 11 Sep 2026 17:36:19 +0000
`YR1`	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 (0)

None observed.

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

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

Ed25519 Receipt

Receipt ID: rcpt_89f5c06a515365f7
Output Hash: 1c5002fae0d41973c453a5b03d4d2ac55d62e205318f56a249f45dcea38e52a8
Signature: ed25519:bf62220999480662b2fac040a6a76028bd526c37f8449340c61b4c1e028d3a91232cb335909cd481bec8e6801c442bd9e59b45d09a3f859b3caedf8824fc1e02
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/rootstudy.co.kr