notebookcheck.com
Observed 2026-07-12T12:12:14.846Z (22h ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
Email byGoogle Workspace
Registered withTucows Domains Inc.
Also usesGoogle Search Console
IPv6 · 1 subdomain · tranco_40k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat notebookcheck.com actually stands on - every host below is a signed observation
notebookcheck.com
A / AAAA
104.26.3.131104.26.2.131172.67.75.1582606:4700:20::681a:283+2 more
Cloudflareserves the site
NS
jeff.ns.cloudflare.comivy.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
alt1.aspmx.l.google.comalt2.aspmx.l.google.comalt4.aspmx.l.google.comalt3.aspmx.l.google.com+1 more
Google Workspacereceives its email
HTTPS probe
redirect
Redirecting (3xx) 301 → https://www.notebookcheck.com/
HTTP status301
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time14 ms
DNS resolutionNOERROR
Redirect chain
https://www.notebookcheck.com/Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".
DNS Records
A 3
104.26.3.131104.26.2.131172.67.75.158
AAAA 3
2606:4700:20::681a:2832606:4700:20::ac43:4b9e2606:4700:20::681a:383
MX 5
5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com10alt4.aspmx.l.google.com10alt3.aspmx.l.google.com1aspmx.l.google.com
TXT 4
google-site-verification=DP1brJTpPZe2XDrwXvYnutiQGvIDeA31nMzvrSsjz2Ev=spf1 ip4:136.243.238.18 ip4:136.243.200.154 ip4:136.243.226.82 ip4:148.251.156.170 ip4:148.251.156.171 ip6:2a01:4f8:242:42ce:c5f0:7631:e183:cd7b ip6:2a01:4f8:242:42c1:d990:f679:e8ed:5ec ip6:2a01:4f8:242:42ca:981b:907b:dcf6:9cc1 a:vpro0698.proserver.punkt.de include:_spf.google.com include:secure-mailgate.com ~allgoogle-site-verification=abmIVvWHUk_uRpcYUmDKDfsRF9oGFPqBt7KtsthpK40v=DKIM1; (detected)
NS 2
jeff.ns.cloudflare.comivy.ns.cloudflare.com
SOA 1
ivy.ns.cloudflare.com dns.cloudflare.com
CAA 10
issue digicert.com; cansignhttpexchanges=yesissuewild letsencrypt.orgissue comodoca.comissue letsencrypt.orgissuewild digicert.com; cansignhttpexchanges=yesissue pki.goog; cansignhttpexchanges=yesissuewild comodoca.comissuewild ssl.comissuewild pki.goog; cansignhttpexchanges=yesissue ssl.com
TLS Certificates (0)
None.
Subdomains (1)
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
1f1819ae-0e25-432d-bd33-58d0e1958ced- Output Hash
1c5080071d846056f28143a8e96fb710b06083316ff050b2fcba9092ffd515dc- Signature
ed25519:5603ac45b6d22518d851122126563b35136d63c60b2a904d62b87e4e36e8eec55515aa5b77980f161655f2e56fa2a67cc8ab91037d3ab13ff1b2d3062351ba04- Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b- Parent
(genesis)- Plane
- fast