studocu.vn

Observed Jul 18, 2026, 13:11 UTC (23h ago). Every field below was attested with an Ed25519 signature at scan time.

Guarded by a firewall

Runs onCloudflare

Email byGoogle (SPF sender)

Secured byAmazon

Also usesFacebook/MetaGoogle Search Console

tranco_20k

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat studocu.vn actually stands on - every host below is a signed observation

studocu.vn

A / AAAA

100.51.170.22354.159.178.8352.0.18.86

Cloudflareserves the site

ns-1190.awsdns-20.orgns-1589.awsdns-06.co.ukns-396.awsdns-49.comns-558.awsdns-05.net

awsdns-20.org + awsdns-06.co.uk + moreanswers its DNS

TLS

studocu.co.kr

Amazonissued its certificate

DNS Records

A 3

100.51.170.223
54.159.178.83
52.0.18.86

TXT 7

ahrefs-site-verification_a69a5c7e0cf8d330a60d94b186c862c6814019cb36c1c358e37d5ee7b1a5d1ed
apple-domain-verification=xeYZAlVyX43Vs6dD
facebook-domain-verification=u3yb61diabkg96kk28mz20c2vrkjdd
google-site-verification=-q5aKB_exHsu6vk9TTKuN-eXbpiJgjHxFZ2MmL90jr8
google-site-verification=0y26PLSqYm593GEtoetDdC35aZAPiiO453gi5IC1G8g
pinterest-site-verification=adec26a8fe07f712851f953c850e9b15
v=spf1 a mx include:mail.zendesk.com include:_spf.google.com -all

NS 4

ns-1190.awsdns-20.org
ns-1589.awsdns-06.co.uk
ns-396.awsdns-49.com
ns-558.awsdns-05.net

SOA 1

ns-558.awsdns-05.net awsdns-hostmaster.amazon.com

CAA 4

iodef "mailto:security@studocu.com"
issue "amazon.com"
issue "letsencrypt.org"
issue "pki.goog"

TLS Certificates (3)

Common Name	Issuer	Expires
`studocu.co.kr`	C=US, O=Amazon, CN=Amazon RSA 2048 M01	Thu, 14 Jan 2027 23:59:59 +0000
`Amazon RSA 2048 M01`	C=US, O=Amazon, CN=Amazon Root CA 1	Fri, 23 Aug 2030 22:21:28 +0000
`Amazon Root CA 1`	C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2	Thu, 31 Dec 2037 01:00:00 +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 receipt

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

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

Ed25519 Receipt

Receipt ID: abd9446b-dd29-4d78-a092-8a69ab7162a2
Output Hash: 04bbd14cec76b86fb832a30e803e649e661baa9aa1cfb754114718582086eb00
Signature: ed25519:7bbc72ca9bbc33503ebc128b2b7557fc4885191449f9bc116e3e0796d2d14f12bfcc582601accbf616be0888d7368f3ce31bc681a0295731b36d77f653596f02
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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