busuu.com
Observed 2026-07-13T22:12:03.472Z (6h ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
Email byProofpoint
Registered withMarkMonitor Inc.
Also usesGoogle Search ConsoleAtlassianStripeMiro
30 subdomains · tranco_5k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat busuu.com actually stands on - every host below is a signed observation
busuu.com
A / AAAA
108.139.10.99108.139.10.42108.139.10.39108.139.10.117
Cloudflareserves the site
NS
ns-1708.awsdns-21.co.ukns-801.awsdns-36.netns-1422.awsdns-49.orgns-123.awsdns-15.com
awsdns-21.co.uk + awsdns-36.net + moreanswers its DNS
MX
mxa-00360d01.gslb.pphosted.commxb-00360d01.gslb.pphosted.com
Proofpointreceives its email
HTTPS probe
redirect
Redirecting (3xx) 301 → https://www.busuu.com/
HTTP status301
Servercloudflare
TLS protocolHTTP/3
TLS issuernot observed
Behind Cloudflareyes
Response time558 ms
DNS resolutionNOERROR
Redirect chain
https://www.busuu.com/Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".
DNS Records
A 4
108.139.10.99108.139.10.42108.139.10.39108.139.10.117
MX 2
10mxa-00360d01.gslb.pphosted.com20mxb-00360d01.gslb.pphosted.com
TXT 26
google-site-verification=Cng4vFgL2uN3oW_baWiihhJZni1rJyPKjsSHvuNLvYYatlassian-domain-verification=nQ3qEbbzY6quiUrpaq5DdtDmt0L2CRDC4+hG0pq9zdc41Jk+cpFZNIKNyhSL/fiTv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:mail.zendesk.com -allbitrise-verification=933f5ea344452d8f-P7GvogboAEbDapple-domain-verification=MWRUkH9Y5NyHsNJqgoogle-site-verification=tM-OQn_2wNQxp_uOje39Ybl7qpFzaMzovYjDqPwbCZogoogle-site-verification=Zb3VZZt2V8rXVcBXmNa_X-sgIhYoXWHY7O_XK4CE7gsatlassian-domain-verification=YwlJ/bGike/cutqsk43lfRICqM3dakD2wqNHt70xbmp7CLky7BSVPvKmk9nNKFVOstripe-verification=a4b6fdebd3c752f80dca48d8313c20f4df3ad179459ea12e5c4b99ae36e53c29mongodb-site-verification=WiT1OAJiSpGM6mwyicyrOrdICBzRCg5a
NS 4
ns-1708.awsdns-21.co.ukns-801.awsdns-36.netns-1422.awsdns-49.orgns-123.awsdns-15.com
SOA 1
ns-1422.awsdns-49.org awsdns-hostmaster.amazon.com
TLS Certificates (0)
None.
Subdomains (30)
- api.busuu.com
- app.busuu.com
- blog.busuu.com
- business.busuu.com
- busuu-live.busuu.com
- cdn.busuu.com
- cs-staging.internal.busuu.com
- cs.internal.busuu.com
- design.busuu.com
- help.busuu.com
- link.alerts.busuu.com
- link.announce.busuu.com
- link.information.busuu.com
- link.news.busuu.com
- link.notifications.busuu.com
- live.busuu.com
- logos.busuu.com
- mi.busuu.com
- mp-staging.internal.busuu.com
- mp.busuu.com
- org.busuu.com
- recover.busuu.com
- splitapps.busuu.com
- sso.busuu.com
- status.busuu.com
- storybook.busuu.com
- tech.busuu.com
- vpn2.busuu.com
- webmail.busuu.com
- www.busuu.com
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
5956a0ea-7a44-4e22-8c6a-39b45847be36- Output Hash
89f9308411c73f238759f519ca4d1e29302cdc2071efef56454fb5cd2950792c- Signature
ed25519:f6b0e3a6fd1bd38984e8d346c7e993253cef5d493bb8990d5e756073c0ebd99077431e5121ad5bd8e7ae8bb2d25974f4ef4f760b9cb339c736bf4466611f310b- Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b- Parent
(genesis)- Plane
- fast