CONTINUOUS INTERNET TELEMETRY24H DRIFTat least 14,274 material changesacross 13,337+ domains · 24h to ~21h ago · a floor, 3h of 24 walkedNOW568 curated domains not reachablelast probe, steadySITE ERRORS34,399 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 155,648 sites429 rate-limit / 403 bot-block, a posture signal

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

  • 202.108.23.17
  • 180.149.132.118

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.cn
  • v1.bdydns.cn
  • v2.bdydns.cn
  • v3.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 receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for duapp.com. It updates itself. It attests a signed observation - not that the site is safe.

DomainDrift signed-observation badge for duapp.com <a href="https://domaindrift.io/t/duapp.com"> <img src="https://domaindrift.io/badge/duapp.com.svg" width="300" height="64" alt="DomainDrift signed observations for duapp.com"> </a>

Ed25519 Receipt

Receipt ID
rcpt_6ac906da3e5cb8ae
Output Hash
d09114fdd924bebf1fdac3875409ce43738fcf04b1b4737ebf3467d3963a2fb3
Signature
ed25519:8dc8cba1b9b075f3d73ce021a7ef479354ebf7ed9fa2bf6a3b78c60aee40c296bd347064fba28fa32681b4be37fb0509c02ffdd4573c317dcb9197cdef31fd0b
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
Verify this in your browser