Domains with SSL Certificates

SSL Certificate Domains Database: 15 Million Verified HTTPS Domains

This comprehensive dataset contains nearly 15 million domain names that have been verified to have active SSL/TLS certificates installed. Every record in this collection represents a domain that has made the commitment to encrypted, secure communication — a signal that carries significant meaning for researchers, marketers, and security professionals alike.

What Is Included in This Dataset

The SSL certificate domains database from WebTrackly provides a curated list of domains across all major top-level domains (TLDs) that currently serve content over HTTPS. Each entry has been verified through active scanning and certificate validation, ensuring that the data you receive reflects the real state of the internet. The dataset includes domain names, associated TLDs, and registration metadata where available. With nearly 15 million records, this is one of the most extensive SSL domain collections available for download.

Why SSL Certificate Data Matters

An SSL certificate is more than just a technical configuration — it is a strong indicator of a domain's legitimacy and operational status. Domains with valid SSL certificates are far more likely to belong to active businesses, e-commerce platforms, financial institutions, and security-conscious organizations. Search engines like Google prioritize HTTPS-enabled sites in their rankings, meaning SSL adoption correlates directly with domains that invest in their online presence.

For analysts and businesses, SSL data serves as a reliable filter for identifying high-quality, operational websites versus parked, abandoned, or potentially malicious domains. This makes the dataset invaluable for anyone who needs to work with a curated subset of the internet's most active properties.

Who Benefits from This Data

Security researchers use SSL certificate databases to study encryption adoption trends, identify misconfigured certificates, and detect potential phishing domains that abuse SSL to appear trustworthy. Tracking certificate issuance patterns can reveal coordinated malicious campaigns.

SSL certificate vendors and resellers leverage this data to understand the competitive landscape, identify which certificate authorities dominate particular market segments, and find domains whose certificates are approaching expiration — a prime opportunity for outreach and renewal services.

Hosting companies and web service providers rely on SSL domain databases for market research, identifying potential clients who are already invested in web infrastructure, and benchmarking their own customer base against the broader market.

Lead generation professionals targeting security services, web development, or managed hosting find this dataset especially valuable. Domains with SSL certificates represent businesses that actively maintain their web presence and are therefore more likely to invest in additional services.

Practical Use Cases

• HTTPS adoption analysis: Measure the percentage of domains using SSL across different TLDs, industries, or geographic regions. Track how encryption adoption evolves over time by comparing snapshots.
• Selling SSL services to non-HTTPS sites: By cross-referencing this dataset with zone file data, you can identify the millions of domains that still lack SSL certificates — creating a targeted prospect list for certificate vendors and web security consultants.
• Security research and threat intelligence: Analyze certificate transparency logs alongside this data to detect newly issued certificates on suspicious domains. Identify domains using free versus paid certificates to assess risk profiles.
• Compliance auditing: Organizations subject to PCI DSS, HIPAA, or GDPR requirements can use SSL data to verify that their partners, vendors, and subsidiaries maintain proper encryption on all customer-facing domains.
• Market intelligence: Understand which industries and regions have the highest SSL adoption rates, informing business strategy for cybersecurity products and services.

Data Fields and Format

The dataset is delivered in a convenient downloadable format suitable for direct import into databases, spreadsheets, or analytical tools. Records include the fully qualified domain name along with associated metadata. The structured format allows for easy filtering, sorting, and cross-referencing with other datasets in the WebTrackly catalog.

Why Choose WebTrackly

WebTrackly specializes in large-scale internet datasets built from continuous, systematic scanning of the global domain space. Our SSL certificate database is updated regularly to reflect the current state of certificate deployment. Unlike scraped or crowdsourced data, every record undergoes validation to ensure accuracy. With nearly 15 million domains in this single collection, competitive pricing, and straightforward download access, WebTrackly provides the scale and reliability that professionals demand for serious research and business intelligence.