🌐 app.link 404 🔒 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 →
404
SSL Expires ?When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
in 117d
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 →
AWS
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 →
3.171.38.89
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. 1
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☁️ Hosting
AWS
📸 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)3.171.38.743.171.38.403.171.38.473.171.38.89
AAAA (IPv6)2600:9000:28a0:c400:19:9934:6a80:93a12600:9000:28a0:be00:19:9934:6a80:93a12600:9000:28a0:6600:19:9934:6a80:93a12600:9000:28a0:8e00:19:9934:6a80:93a12600:9000:28a0:4800:19:9934:6a80:93a12600:9000:28a0:3600:19:9934:6a80:93a12600:9000:28a0:de00:19:9934:6a80:93a12600:9000:28a0:8a00:19:9934:6a80:93a1
NSns-249.awsdns-31.comns-615.awsdns-12.netns-1521.awsdns-62.orgns-1800.awsdns-33.co.uk
TXT (3)
Services configured via TXT:
Google2
Show all TXT records
v=spf1 -all
google-site-verification=FXJOkLzb6EKqvgtikG5X2LojokNDBwpYdzJ3qnOo_Q4
google-site-verification=jFobHOfP7n6ugi0Y9aObMrtJWcec5jZg0PwmoIMCPco
📋 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)appipv4.link
IssuerAmazon
Valid From2026-01-23
Valid Until2027-02-20 (117 days left)
SANs (4)appipv4.linkapp.link*.app.link*.appipv4.link
📡 HTTP Headers ?Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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Status404
Serveropenresty
Content-Typetext/html; charset=utf-8
Final URLhttps://app.link/
strict-transport-securitymax-age=31536000; includeSubDomains
x-content-type-optionsnosniff
x-cacheError from cloudfront
via1.1 73df7441b00ce92e508b9824ca21cc94.cloudfront.net (CloudFront)
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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Server location map
IP Address3.171.38.89
ProviderAWS
OrganizationAmazon.com, Inc.
ASNAS16509
LocationDulles Town Center, Virginia, US
Coordinates39.0376, -77.4158
🛡️ 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.
Areas hidden from crawlers:
📁 Other paths 1
Show raw disallow rules (1)
/_r/
Sitemap Found 106 sitemaps (index) pages
Last modified 2018-06-26
🔗 Social & Meta Tags Missing
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📧 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 -all
DMARCNot set
🌍 Other TLDs ?Other top-level domain variants of this domain name and their availability. 19 active 2 for sale 3 available
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.com ●
.net ●
.org ●
.info Available
.io ●
.co ●
.dev Available
.app Available
.me taken
.biz ●
.eu ●
.xyz ●
.fi ●
.se ●
.de ●
.uk ●
.fr ●
.nl ●
.es ●
.it ●
.us ●
.ca taken
.com.au ●
.co.uk ●
📡 Uptime Monitor
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Current Status 🟢 Client Error
HTTP Status 404
Response Time 94ms
Last Checked 2026-10-26 00:01:01.020712
Uptime (30d) 100%