jangboo.kr
Observed Aug 16, 2026, 07:54 UTC (6h 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 byMicrosoft 365
Microsoft 365Secured byLet's Encrypt
Let's EncryptAlso usesGoogle Search Console
Google Search Console1 subdomain · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat jangboo.kr actually stands on - every host below is a signed observation
jangboo.kr
A / AAAA
49.254.171.196
unattributedserves the site
NS
ns-cloud-a4.googledomains.comns-cloud-a2.googledomains.comns-cloud-a1.googledomains.comns-cloud-a3.googledomains.com
googledomains.comanswers its DNS
MX
jangboo-kr.mail.protection.outlook.com
Microsoft 365receives its email
TLS
www.jangboo.kr
Let's Encryptissued its certificate
DNS Records
A 1
49.254.171.196
MX 1
0jangboo-kr.mail.protection.outlook.com
TXT 2
v=spf1 include:spf.protection.outlook.com include:mail.stibee.com ~allgoogle-site-verification=uIxpuR15Sb4AKHHyjWFdFZHxiLJoMljrbH1BSyW_5Ik
NS 4
ns-cloud-a4.googledomains.comns-cloud-a2.googledomains.comns-cloud-a1.googledomains.comns-cloud-a3.googledomains.com
SOA 1
ns-cloud-a1.googledomains.com cloud-dns-hostmaster.google.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.jangboo.kr |
C=US, O=Let's Encrypt, CN=YR1 | Mon, 14 Sep 2026 08:34:45 +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 (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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_9d6524258469d97a- Output Hash
ea1e1bbdfc4862f8ed960bc5b3ea8fd8ef34167c74959669a4098a61d25aace4- Signature
ed25519:423c250cc1f12084fba32d0fb5be0d384d8f6a1c1151b339f0d1d158e50416b0950a007021cb43332c923bb477deca0a7b228632d2c7c36aef74bfad15a6c300- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast