🌐 mdpi.biz 403 🔒 SSL Valid
Checked: just now 🔗 Visit site
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This domain forwards to mdpi.com (checked 0d ago)
HTTP Status ?A three-digit code showing if the site loaded successfully (200), redirects (301/302), or has errors (4xx/5xx).Read more →
403
SSL Expires ?When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
in 44d
Domain Expires ?When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
in 326d
Hosting ?The company and location where this website's server is physically located.Read more →
Unknown
Security ?Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
1/3
IP Address ?The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
104.21.21.14
Performance ?Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
N/A
Uptime
100%
⚡ Performance ?Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
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Performance data not available yet.

🛠️ Tech Stack ?Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools.
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No technologies detected

📸 Screenshot
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Screenshot not available yet.

🌐 DNS Records ?DNS translates domain names to IP addresses. Records control where the site, email, and services are directed.Read more →
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A (IPv4)172.67.195.172104.21.21.14
AAAA (IPv6)2606:4700:3035::ac43:c3ac2606:4700:3037::6815:150e
NStia.ns.cloudflare.comduke.ns.cloudflare.com
📋 WHOIS / RDAP ?Public registration data: who registered the domain, when, and when it expires.Read more →
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RegistrarNetwork Solutions, LLC
Registered2013-09-12
Expires2027-09-11 (in 326 days)
Last Updated2026-07-18
Statusclient transfer prohibited
🔒 SSL Certificate ?Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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Subject (CN)mdpi.biz
IssuerGoogle Trust Services
Valid From2026-09-04
Valid Until2026-12-03 (44 days left)
SANs (2)mdpi.biz*.mdpi.biz
📡 HTTP Headers ?Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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Status403
ServerN/A
Content-Typetext/html
Final URLhttps://www.mdpi.com/
strict-transport-securitymax-age=31536000
cache-controlmax-age=0, no-cache, no-store
Security headers ?HTTP headers that protect visitors from attacks. HSTS forces HTTPS, CSP controls resource loading, X-Frame-Options prevents clickjacking.Read more →
HSTS
Content-Security-Policy
X-Frame-Options
🏠 Hosting ?Physical infrastructure: where the server is, who operates it, and what network it belongs to.Read more →
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IP Address104.21.21.14
ProviderUnknown
OrganizationN/A
ASNN/A
LocationN/A
🛡️ Security Score F (2/7)
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Valid SSL
HSTS
CSP
X-Frame-Options
X-Content-Type
Referrer-Policy
Permissions-Policy
🗺️ Sitemap & Robots
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No robots.txt
This site has no robots.txt file, so crawlers may access everything by default.
Sitemap Not found
🔗 Social & Meta Tags
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No meta tags detected.

📧 Mail Security ?Email authentication records (SPF & DMARC) that prevent spoofing and phishing from this domain.Read more →
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SPFNot set
DMARCNot set
🌍 Other TLDs ?Other top-level domain variants of this domain name and their availability. 19 active 1 for sale 3 available
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.com ●
.net ●
.org ●
.info ●
.io ●
.co Available
.dev taken
.app ●
.me ●
.biz current
.eu ●
.xyz ●
.fi Available
.se ●
.de ●
.uk ●
.fr ●
.nl ●
.es ●
.it ●
.us ●
.ca ●
.com.au Available
.co.uk ●
📡 Uptime Monitor
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Current Status 🟢 Client Error
HTTP Status 403
Response Time 75ms
Last Checked 2026-10-18 20:45:38.851355
Uptime (30d) 100%