jyb.cn
Observed Jul 22, 2026, 00:49 UTC (1d 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.
Not responding
Runs onChina Education and Research Network Center
tranco_40k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat jyb.cn actually stands on - every host below is a signed observation
jyb.cn
A / AAAA
121.194.3.160
China Education and Research Network Centerserves the site
NS
ns1.jyb.com.cnns2.jyb.com.cn
com.cnanswers its DNS
MX
mxbiz2.qq.commxbiz1.qq.com
qq.comreceives its email
DNS Records
A 1
121.194.3.160
MX 2
10mxbiz2.qq.com5mxbiz1.qq.com
TXT 1
v=spf1 include:spf.mail.qq.com ~all
NS 2
ns1.jyb.com.cnns2.jyb.com.cn
SOA 1
ns.jyb.cn postmaster.jyb.cn
TLS Certificates (0)
None.
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_1d67eb3f2d3854b8- Output Hash
44444bb506e6c0ae8e5c433698e30d970aca757d552515e36ad71ba5f38e2221- Signature
ed25519:e7275f49ffe19029a120ff2905f1d98a4abc90a70d179ee9e7d01bb62ed9bac9ec07b5a9dbc306fae63ffd3f42988651b3d223619f824a46a387197a66de8b0e- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast