a4tech.com

HTTPS HTTP/2 Gzip Crawled in 16,745ms · June 27, 2026 16:46 UTC

a4tech.com Website Overview & Technology Report

🤖 AI Summary
We performed a comprehensive analysis of a4tech.com on 2026-06-27. The website returned an HTTP 200 status code with a server response time of 8651ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 41 KB. Warning: The website does not have a valid SSL certificate. Visitors may see security warnings in their browser, and data transmitted to and from this website is not encrypted. The security headers analysis reveals a score of 0/100 (poor). No security headers are configured, which is a significant security concern. However, the site is missing Content-Security-Policy, Strict-Transport-Security (HSTS), X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy, which could expose the site and its users to cross-site scripting (XSS), clickjacking, and other web-based attacks. Our technology detection scan identified 1 technologies across 1 categories powering a4tech.com. The detected stack includes jQuery 3.7.1.. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, a4tech.com receives an overall trust score of 59/100, classified as "Caution Advised".
59
/ 100
Trust Score
0
/ 100
Security Headers
HTTP Response
Status200 OK
Response Time8651ms
ProtocolHTTP/2
Page Size41 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
Server
Total Requests248
3rd Party Domains5
RedirectNone
Detected Technologies (1)
📦 jQuery
Security Headers
Content-Security-Policy
Not set
Strict-Transport-Security (HSTS)
Not set
X-Frame-Options
Not set
X-Content-Type-Options
Not set
Referrer-Policy
Not set
Permissions-Policy
Not set
SSL Certificate
IssuerDigiCert Inc
Issuer FullcountryName=US, organizationName=DigiCert Inc, organizationalUnitName=www.digicert.com, commonName=Encryption Everywhere DV TLS CA - G2
SubjectcommonName=www.a4tech.com
Type
TLS VersionTLS 1.3
Cipher SuiteTLS_AES_256_GCM_SHA384
Algorithm
Issued
Expires— (? days)
SANs

a4tech.com Trust Score & Safety Analysis

🤖 AI Summary
After conducting a thorough safety and legitimacy analysis, a4tech.com receives a trust score of 59/100, which places it in the "Caution Advised" category. This score is calculated by evaluating multiple factors including SSL certificate validity, domain registration history, email authentication protocols, security header configuration, and blacklist status across major threat intelligence databases. The analysis identified several positive trust signals: a valid HTTPS connection protecting data in transit, SPF (Sender Policy Framework) email authentication preventing email spoofing, and DMARC email authentication with a none policy. Areas of concern include: the absence of a Content-Security-Policy header, which leaves the site more vulnerable to cross-site scripting (XSS) attacks, no X-Frame-Options header, which could allow the site to be embedded in malicious iframes (clickjacking), missing Referrer-Policy, potentially leaking URL information to third parties, the domain's WHOIS information is hidden behind a privacy service, making it harder to verify the owner's identity, and DNSSEC is not enabled, leaving DNS queries vulnerable to spoofing attacks. While these issues don't necessarily indicate malicious intent, they represent areas where the website's security posture could be improved. We checked a4tech.com against 8 major blacklist databases including Google Safe Browsing, Phishtank, Urlhaus, Openphish, Dnsfilter, Spamhaus Dbl, Surbl, and Virustotal. The domain passed all 8 checks with a clean status, meaning it has not been flagged for phishing, malware distribution, spam, or other malicious activities by any of the tested threat intelligence providers.
59
/ 100
Caution Advised
Trust Signals
Valid HTTPS
SPF configured
DMARC configured (p=none)
⚠️ DNSSEC not enabled
⚠️ Missing Content-Security-Policy
⚠️ Missing X-Frame-Options
⚠️ Missing Referrer-Policy
Blacklist Checks (8/8 clean)
Google Safe Browsing clean
Phishtank clean
Urlhaus clean
Openphish clean
Dnsfilter clean
Spamhaus Dbl clean
Surbl clean
Virustotal clean

a4tech.com Technology Stack & Detected Technologies

🤖 AI Summary
Our technology detection engine scanned a4tech.com and identified 1 distinct technologies across 1 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records. JavaScript Library: jQuery (version 3.7.1.) — provides utility functions and DOM manipulation for a4tech.com.
JavaScript Library
📦 jQuery 3.7.1.(100%)

a4tech.com Performance, Speed & Core Web Vitals

🤖 AI Summary
a4tech.com delivers its homepage in 8651ms (server response time), which is considered slow by industry standards. The total page weight is 41 KB, and we detected 248 resource requests loading assets from 5 third-party domains. A high number of third-party domains can significantly impact page load time due to additional DNS lookups and TLS handshakes required for each domain. The website uses Gzip compression for text-based assets, achieving an estimated 60.0% reduction in transfer size. This reduces bandwidth usage and improves page load times, especially for visitors on slower connections. Asset minification status: 0 out of 3 CSS files and 1 out of 6 JavaScript files are minified. Minifying the remaining 8 unminified file(s) could further reduce page weight by 10-30% for those assets. Minification is a best practice that reduces download sizes without affecting functionality. From an environmental perspective, each page view of a4tech.com produces approximately 0.02g of CO₂, earning a carbon rating of A. This places the website among the cleanest on the web, demonstrating efficient use of server resources and optimized content delivery. For reference, the average web page produces about 0.5g of CO₂ per page view. The page weight of 41 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for a4tech.com. This typically means the site doesn't have enough real-world Chrome user traffic to generate statistically significant field data, or the domain is not included in the CrUX dataset. Core Web Vitals (LCP, INP, CLS) are important Google ranking factors that measure real user experience.
Core Web Vitals data not available
Requires CrUX API key configuration
Carbon Footprint
CO₂ per page view0.02g
RatingA
Page Weight & Optimization
HTML Size41 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
Total Requests248
3rd Party Domains5
CSS Minified0/3
JS Minified1/6

a4tech.com DNS Records, Email Authentication & Domain Registration

🤖 AI Summary
a4tech.com resolves to the IPv4 address 52.26.62.151, but does not support IPv6. IPv6 adoption is increasingly important as IPv4 address space becomes exhausted, and some ISPs and regions are transitioning to IPv6-only connectivity. The domain has 1 A record(s) configured. The domain name system is managed by 4 name servers: ns1118.ui-dns.biz, ns1118.ui-dns.com, ns1118.ui-dns.de, and ns1118.ui-dns.org. Having 4 name servers provides good redundancy — if one fails, the others can continue serving DNS queries. The choice of name servers often indicates the DNS hosting provider or CDN service being used. Email for a4tech.com is handled by ionos.com with 2 MX records configured: mx00.ionos.com and mx01.ionos.com. Multiple MX records provide failover redundancy — if the primary mail server is unavailable, email will be routed to the next available server. SPF (Sender Policy Framework) is configured, which specifies which mail servers are authorized to send email on behalf of this domain. This helps prevent email spoofing and improves email deliverability. DMARC (Domain-based Message Authentication, Reporting and Conformance) is configured with a none policy — a monitoring-only setting that doesn't enforce any action on unauthorized emails. DKIM was not detected. Without DKIM, recipients cannot cryptographically verify that emails claiming to be from this domain are authentic. DNSSEC is not enabled for a4tech.com. While not critical for most websites, DNSSEC adds an important security layer by ensuring DNS responses haven't been tampered with during transit. Enabling DNSSEC is recommended for domains handling sensitive data or financial transactions. Our subdomain enumeration scan discovered 2 active subdomains for a4tech.com: support.a4tech.com and www.a4tech.com. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.
DNS Records
A
52.26.62.151
NS
ns1118.ui-dns.biz
ns1118.ui-dns.com
ns1118.ui-dns.de
ns1118.ui-dns.org
MX
mx00.ionos.com
mx01.ionos.com
Email & Authentication
SPF
DMARC p=none
DKIM
DNSSEC
MX Providerionos.com
Registrar
Organisation
Country
Contact
Registered
Expires
Domain Age
IPv6 SupportNo
Subdomains (2 found)
support.a4tech.com www.a4tech.com

a4tech.com Page Content, Images & Accessibility

🤖 AI Summary
The homepage of a4tech.com contains 220 words of visible text content. This is a relatively short page — adding more descriptive content could improve search engine visibility. The page is structured with 0 H2 headings, 0 H3 headings, 0 H4 headings. The page includes 86 images. 20 images (23%) are missing alt text attributes, which is a significant concern for both accessibility and SEO. Screen readers rely on alt text to describe images to visually impaired users, and search engines use alt text to understand image content. Only 77% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 137 internal links pointing to other pages on the same domain and 13 external links pointing to third-party websites. The high number of internal links suggests a well-interconnected site structure, which helps search engines discover and crawl all pages efficiently. There are 6 external JavaScript files, 3 CSS stylesheets, and 0 iframes on the page. Notable missing features: XML Sitemap, robots.txt, and Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility.
220
Words
86
Images
77%
Alt Text Score
41
Page Size (KB)
Content Structure
H1
H2 Tags0
H3 Tags0
H4 Tags0
H5 Tags0
H6 Tags0
Internal Links137
External Links13
Assets & Features
JavaScript Files6
JS Minified1/6
CSS Files3
CSS Minified0/3
Iframes0
Images86
Missing Alt20
SitemapNo
Robots.txtNo
PWANo
AMPNo
RSS FeedNo

a4tech.com SEO Analysis, Meta Tags & Open Graph

🤖 AI Summary
The title tag for a4tech.com is good at 23 characters: "A4TECH Official Website". The length is acceptable, though it may be slightly truncated in some search result displays. No meta description is configured for a4tech.com. This is a critical SEO oversight — without a meta description, Google will auto-generate a snippet from page content, which may not accurately represent the page or entice users to click. Adding a unique, compelling meta description of 120-155 characters is strongly recommended. A favicon is configured. No Open Graph tags are configured. When someone shares a link to a4tech.com on social media, the platform will have to guess the title, description, and image — often producing unattractive or inaccurate previews. Adding OG tags is essential for social media marketing.
Google SERP Preview
A4TECH Official Website
https://a4tech.com
Meta Tags
TitleA4TECH Official Website...
Title Length23 chars
Meta Desc Length0 chars
H1
Language
Canonical
Meta Robotsnot set
Meta Keywordsnot set
Schema.org & Social
Schema Types
OG Type
OG ImageNot set
Twitter Card
FaviconSet ✓