postgresql.org Website Overview & Technology Report
🤖 AI Summary
We performed a comprehensive analysis of postgresql.org on 2026-06-28. The website returned an HTTP 200 status code with a server response time of 22224ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 25 KB, and the site is served behind a CDN (Content Delivery Network).
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 55/100 (moderate). The following security headers are properly configured: Content-Security-Policy, Strict-Transport-Security (HSTS), and X-Frame-Options. However, the site is missing 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 postgresql.org. The detected stack includes Font Awesome.
Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, postgresql.org receives an overall trust score of 70/100, classified as "Likely Safe".
HTTP Response
Status200 OK
Response Time22224ms
ProtocolHTTP/2
Page Size25 KB
CompressionGzip
Compression Savings~60.0%
CDNYes ✓
Servernginx
Total Requests101
3rd Party Domains2
Redirect1 hop(s)
Detected Technologies (1)
🎯 Font Awesome
Security Headers
✓
Content-Security-Policy
Set ✓
✓
Strict-Transport-Security (HSTS)
Set ✓
✗
X-Content-Type-Options
Not set
✗
Referrer-Policy
Not set
✗
Permissions-Policy
Not set
SSL Certificate
IssuerLet's Encrypt
Issuer FullcountryName=US, organizationName=Let's Encrypt, commonName=YR1
SubjectcommonName=www.postgresql.org
Type—
TLS VersionTLS 1.3
Cipher SuiteTLS_AES_256_GCM_SHA384
Algorithm—
Issued—
Expires— (? days)
SANs—
postgresql.org Trust Score & Safety Analysis
🤖 AI Summary
After conducting a thorough safety and legitimacy analysis, postgresql.org receives a trust score of 70/100, which places it in the "Likely Safe" 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, HSTS (HTTP Strict Transport Security) enforcement preventing protocol downgrade attacks, SPF (Sender Policy Framework) email authentication preventing email spoofing, DMARC email authentication with a none policy, and DNSSEC providing authenticated DNS responses.
Areas of concern include: missing Referrer-Policy, potentially leaking URL information to third parties and the domain's WHOIS information is hidden behind a privacy service, making it harder to verify the owner's identity. While these issues don't necessarily indicate malicious intent, they represent areas where the website's security posture could be improved.
We checked postgresql.org 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.
Trust Signals
✅ Valid HTTPS
✅ HSTS enabled
✅ SPF configured
✅ DMARC configured (p=none)
✅ DNSSEC enabled
✅ Robots.txt found
⚠️ 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
postgresql.org Technology Stack & Detected Technologies
🤖 AI Summary
Our technology detection engine scanned postgresql.org 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.
Icon Set: Font Awesome — provides additional functionality for postgresql.org.
Icon Set
postgresql.org Performance, Speed & Core Web Vitals
🤖 AI Summary
postgresql.org delivers its homepage in 22224ms (server response time), which is considered slow by industry standards. The total page weight is 25 KB, and we detected 101 resource requests loading assets from 2 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: 1 out of 3 CSS files and 0 out of 2 JavaScript files are minified. Minifying the remaining 4 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.
The site is served through a Content Delivery Network (CDN), which caches static assets at edge servers around the world. This means visitors from different geographic regions receive content from the nearest edge server, significantly reducing latency. CDN usage is particularly important for websites with a global audience, as it can reduce page load times by 40-60% for distant visitors.
From an environmental perspective, each page view of postgresql.org produces approximately 0.01g 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 25 KB is the primary factor in this calculation.
Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for postgresql.org. 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 view0.01g
RatingA
Page Weight & Optimization
HTML Size25 KB
CompressionGzip
Compression Savings~60.0%
CDNYes ✓
Total Requests101
3rd Party Domains2
CSS Minified1/3
JS Minified0/2
postgresql.org DNS Records, Email Authentication & Domain Registration
🤖 AI Summary
postgresql.org resolves to the IPv4 address 217.196.149.50 and also supports IPv6 (2a02:16a8:dc51::50), demonstrating modern network infrastructure readiness. The domain has 1 A record(s) configured.
The domain name system is managed by 4 name servers: ns1.postgresql.org, ns2.postgresql.org, ns3.postgresql.org, and ns4.postgresql.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 postgresql.org is handled by postgresql.org with 2 MX records configured: magus.postgresql.org and makus.postgresql.org. 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 enabled for postgresql.org, providing an additional layer of security by cryptographically signing DNS records. This prevents DNS cache poisoning and man-in-the-middle attacks that could redirect visitors to malicious websites.
Our subdomain enumeration scan discovered 5 active subdomains for postgresql.org: ftp.postgresql.org, mail.postgresql.org, smtp.postgresql.org, webmail.postgresql.org, and www.postgresql.org. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.
DNS Records
NS
ns1.postgresql.org
ns2.postgresql.org
ns3.postgresql.org
ns4.postgresql.org
MX
magus.postgresql.org
makus.postgresql.org
Email & Authentication
MX Providerpostgresql.org
Registrar—
Organisation—
Country—
Contact—
Registered—
Expires—
Domain Age—
IPv6 SupportYes ✓
Subdomains (5 found)
ftp.postgresql.org mail.postgresql.org smtp.postgresql.org webmail.postgresql.org www.postgresql.org
postgresql.org Page Content, Images & Accessibility
🤖 AI Summary
The homepage of postgresql.org contains 993 words of visible text content. This is a moderate amount of content. The page is structured with 8 H2 headings, 15 H3 headings, 0 H4 headings.
The page includes 10 images. All images have proper alt text attributes ✓, which is excellent for both accessibility (screen readers) and SEO (search engines can understand image content).
The link structure consists of 71 internal links pointing to other pages on the same domain and 13 external links pointing to third-party websites. There are 2 external JavaScript files, 3 CSS stylesheets, and 0 iframes on the page.
The site implements the following web standards and features: robots.txt (controls search engine crawling behavior).
Notable missing features: XML Sitemap and Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility.
We detected the following payment methods accepted on postgresql.org: Discover. Offering multiple payment options including credit cards and digital wallets improves customer trust and can increase conversion rates.
Content Structure
H1PostgreSQL: The World's Most Advanced Open Source Relational Database
H2 Tags8
H3 Tags15
H4 Tags0
H5 Tags0
H6 Tags0
Internal Links71
External Links13
Assets & Features
JavaScript Files2
JS Minified0/2
CSS Files3
CSS Minified1/3
Iframes0
Images10
Missing Alt0
SitemapNo
Robots.txtYes ✓
PWANo
AMPNo
RSS FeedNo
Payment Methods Detected
postgresql.org SEO Analysis, Meta Tags & Open Graph
🤖 AI Summary
The title tag for postgresql.org is well-optimized at 58 characters: "PostgreSQL: The world's most advanced open source database". The length falls within the ideal range for Google search results, ensuring the full title is displayed without truncation.
The meta description is 80 characters (well-optimized): "The official site for PostgreSQL, the world's most advanced open source database". Google typically displays up to 155-160 characters of the meta description in search results. A compelling meta description with a clear call-to-action can significantly improve click-through rates from search results.
The page language is declared as en and a favicon is configured.
Open Graph meta tags are configured with 4/4 recommended fields: OG title ("PostgreSQL..."), OG description, OG image (social sharing thumbnail), OG type (article). These tags control how the page appears when shared on Facebook, LinkedIn, and other social media platforms that support the Open Graph protocol.
Google SERP Preview
PostgreSQL: The world's most advanced open source database
https://postgresql.org
The official site for PostgreSQL, the world's most advanced open source database
Meta Tags
TitlePostgreSQL: The world's most advanced open source database...
Title Length58 chars
Meta Desc Length80 chars
H1PostgreSQL: The World's Most Advanced Open Source Relational
Languageen
Canonical—
Meta Robotsnot set
Meta Keywordsnot set
Schema.org & Social
Schema Types—
OG Typearticle
OG ImageSet ✓
Twitter Card—
FaviconSet ✓
Open Graph Preview
postgresql.org
PostgreSQL
The world's most advanced open source database.
postgresql.org Data Breaches, History, Green Hosting & Mobile Apps
🤖 AI Summary
This section shows additional intelligence about postgresql.org including data breach history (via HaveIBeenPwned), web archive history (Wayback Machine), green/eco-friendly hosting status, and mobile app presence in the iOS App Store.
✅No Data Breaches Found
This domain has not appeared in any known data breaches.