duapp.com
Observed Jul 27, 2026, 22:37 UTC (4d 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
Signed observation on record.
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat duapp.com actually stands on - every host below is a signed observation
duapp.com
A / AAAA
202.108.23.17180.149.132.118
unattributedserves the site
NS
v4.bdydns.cnv1.bdydns.cnv2.bdydns.cnv3.bdydns.cn
bdydns.cnanswers its DNS
MX
csmail.n.shifen.com
shifen.comreceives its email
DNS Records
A 2
202.108.23.17180.149.132.118
MX 1
10csmail.n.shifen.com
TXT 1
v=spf1 ip4:111.13.102.31 ip4:111.13.102.32 ip4:111.13.102.160 ip4:111.13.102.161 a mx ptr ~all
NS 4
v4.bdydns.cnv1.bdydns.cnv2.bdydns.cnv3.bdydns.cn
SOA 1
v1.bdydns.cn sa.dudns.com
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_6ac906da3e5cb8ae- Output Hash
d09114fdd924bebf1fdac3875409ce43738fcf04b1b4737ebf3467d3963a2fb3- Signature
ed25519:8dc8cba1b9b075f3d73ce021a7ef479354ebf7ed9fa2bf6a3b78c60aee40c296bd347064fba28fa32681b4be37fb0509c02ffdd4573c317dcb9197cdef31fd0b- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast