CONTINUOUS INTERNET TELEMETRY24H DRIFT12,276 material changesacross 11,592 domains · 24h to ~3h ago · +3,513 vs yesterdayNOW560 curated domains not reachablelast probe, steadySITE ERRORS34,304 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 156,289 sites429 rate-limit / 403 bot-block, a posture signalMOVERokta.comNo mail routes in the latest observation

ybmedu.com

Observed Aug 3, 2026, 02:58 UTC (9h 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.

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Up right now
Secured byGlobalSign
8 subdomains · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat ybmedu.com actually stands on - every host below is a signed observation
ybmedu.com
A / AAAA
210.116.108.42
unattributedserves the site
NS
ns.ybmsisa.com
ybmsisa.comanswers its DNS
MX
mailmain.ybmsisa.co.kr
ybmsisa.co.krreceives its email
TLS
*.ybmnet.co.kr
GlobalSign nv-saissued its certificate

DNS Records

A 1

  • 210.116.108.42

MX 1

  • 10mailmain.ybmsisa.co.kr

TXT 2

  • v=spf1 ip4:203.231.233.147 ip4:203.231.233.148 ip4:210.116.108.63 ip4:210.116.108.64 ip4:210.116.108.65 ip4:210.116.108.66 ip4:218.236.40.17 ip4:218.236.40.19 ~all
  • MS=ms25819906

NS 1

  • ns.ybmsisa.com

SOA 1

  • sisadns131 administrator

TLS Certificates (3)

Common NameIssuerExpires
*.ybmnet.co.kr C=BE, O=GlobalSign nv-sa, CN=GlobalSign RSA OV SSL CA 2018 Sun, 27 Sep 2026 00:56:01 +0000
GlobalSign RSA OV SSL CA 2018 2.5.4.11=GlobalSign Root CA - R3, O=GlobalSign, CN=GlobalSign Tue, 21 Nov 2028 00:00:00 +0000
GlobalSign 2.5.4.11=GlobalSign Root CA - R3, O=GlobalSign, CN=GlobalSign Sun, 18 Mar 2029 10:00:00 +0000

Subdomains (8)

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.

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Ed25519 Receipt

Receipt ID
rcpt_fad46cbbe729ef9f
Output Hash
25c54e679ec74215d9d52ec979eda60a64b1bc494f628b98a825bae5df464f26
Signature
ed25519:0810917dfc0dad2409a665ae84fc1d540bb9f0caed330320743e0313f01037832793df0139d458c843e9f8ff139126dc25fe3124f78e1f711b88dcfa26269e0e
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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