🌐 testbook.co 200 🔒 SSL Valid
Checked: just now 🔗 Visit site
HTTP Status ?A three-digit code showing if the site loaded successfully (200), redirects (301/302), or has errors (4xx/5xx).Read more →
200
SSL Expires ?When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
in 74d
Domain Expires ?When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
N/A
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 →
0/3
IP Address ?The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
104.21.45.27
Performance ?Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
N/A
Uptime
N/A
⚡ 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. 2
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🌐 CDN
Cloudflare
🎨 CSS Framework
Tailwind CSS
📸 Screenshot Processing...
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⏳

Screenshot is being captured...

🌐 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)104.21.45.27172.67.208.20
AAAA (IPv6)2606:4700:3031::6815:2d1b2606:4700:3036::ac43:d014
NSaaden.ns.cloudflare.comraegan.ns.cloudflare.com
MX0 testbook-co.mail.protection.outlook.com
TXT (5)
Services configured via TXT:
Microsoft 365
+3 other TXT record(s)
Show all TXT records
afternic-verification-doEqLZyTYoGviEKgek9tKm
v=spf1 include:spf.protection.outlook.com -all
37a35edbe5b525922f98ea969ce27af0abe0088b
9357798575d681e1b894c992bca2283eef3e3997
MS=ms13193135
📋 WHOIS / RDAP ?Public registration data: who registered the domain, when, and when it expires.Read more →
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RegistrarN/A
RegisteredN/A
ExpiresN/A
Last UpdatedN/A
🔒 SSL Certificate ?Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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Subject (CN)testbook.co
IssuerGoogle Trust Services
Valid From2026-10-02
Valid Until2026-12-31 (74 days left)
SANs (1)testbook.co
📡 HTTP Headers ?Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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Status200
Servercloudflare
Content-Typetext/html; charset=utf-8
Final URLhttps://testbook.co/
x-content-type-optionsnosniff
referrer-policystrict-origin-when-cross-origin
cache-controlpublic, max-age=0, must-revalidate
cf-raya4c472a9c8419b2d-IAD
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 Address104.21.45.27
ProviderUnknown
OrganizationN/A
ASNN/A
LocationN/A
🛡️ Security Score D (3/7)
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Valid SSL
HSTS
CSP
X-Frame-Options
X-Content-Type
Referrer-Policy
Permissions-Policy
🗺️ Sitemap & Robots
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Open to search engines
This site's robots.txt lets crawlers access its main content. Search engines can index it normally.
No paths are disallowed — everything is crawlable.
Sitemap Not found
🔗 Social & Meta Tags Missing
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TitleRedirecting...
Canonical URLhttps://aya-designer.github.io/pdf
Languageen
📧 Mail Security ?Email authentication records (SPF & DMARC) that prevent spoofing and phishing from this domain.Read more →
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SPF✓ Present
v=spf1 include:spf.protection.outlook.com -all
DMARC✓ Present
v=DMARC1; p=none;
MX Records
0 → testbook-co.mail.protection.outlook.com
🌍 Other TLDs ?Other top-level domain variants of this domain name and their availability. 10 active 1 for sale 12 available
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.com ●
.net ●
.org ●
.info ●
.io taken
.co current
.dev Available
.app Available
.me Available
.biz Available
.eu ●
.xyz ●
.fi Available
.se Available
.de Available
.uk Available
.fr Available
.nl ●
.es ●
.it Available
.us ●
.ca Available
.com.au Available
.co.uk ●
📡 Uptime Monitor
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Not checked yet — data will appear after the first monitoring run.