ust.ac.kr
Observed Jul 25, 2026, 14:55 UTC (8d 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 (SPF sender)
Secured bySectigo
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat ust.ac.kr actually stands on - every host below is a signed observation
ust.ac.kr
A / AAAA
210.98.46.8
unattributedserves the site
NS
ns.ust.ac.kr
ac.kranswers its DNS
MX
gcmx02.govkorea.krgcmx03.govkorea.krgcmx01.govkorea.kr
Google (SPF sender)receives its email
TLS
*.ust.ac.kr
Sectigo Limitedissued its certificate
DNS Records
A 1
210.98.46.8
MX 3
10gcmx02.govkorea.kr10gcmx03.govkorea.kr10gcmx01.govkorea.kr
TXT 3
mailer.domain.verification=t5xOULPZDPLh6sYmKVSrONL9UEO1edv=spf1 mx include:_spf.google.com ip4:211.251.247.126 ip4:211.251.247.125 ip4:211.251.247.120 ip4:210.98.46.130 include:email.gov-ncloud.com include:govkorea.kr include:spf.protection.outlook.com include:spf.maillink.co.kr -allv=DMARC1; p=none; rua=mailto:admin@ust.ac.kr
NS 1
ns.ust.ac.kr
SOA 1
ns.ust.ac.kr please_set_email.absolutely.nowhere
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
*.ust.ac.kr |
C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Organization Validation Secure Server CA | Sun, 02 Aug 2026 23:59:59 +0000 |
Sectigo RSA Organization Validation Secure Server CA |
C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority | Tue, 31 Dec 2030 23:59:59 +0000 |
USERTrust RSA Certification Authority |
C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority | Mon, 18 Jan 2038 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 receiptEd25519 Receipt
- Receipt ID
rcpt_c32b5f65b061a6e2- Output Hash
668f7eb05b04fbed4e0dfa3dc2ce4e306716b08905c2f5f353d1f98662c9dac3- Signature
ed25519:eddf6545350a9d041fe38dd2df49339ce58de539db6b98959f85f772133507a7aa2cee6a71ab926ff851f1a0bfb2922f587166a97c681b623f90b4250f5cc508- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast