SSLBoard as an ImmuniWeb SSL Test alternative
ImmuniWeb’s free SSL Security Test is one of the more thorough single-host scanners out there. It checks your TLS stack against PCI DSS, HIPAA, and NIST requirements, grades the result, and even tests email servers. If you need to know whether one specific server would pass a compliance check, it’s a solid pick.
The catch is the same one every single-host tester has: it only looks where you point it. Your production web server might score well while a forgotten staging subdomain still negotiates TLS 1.0. SSLBoard starts from the domain instead. You type it in and get a posture report across every discovered host and endpoint. No account required.
What is ImmuniWeb SSL Test?
The SSL Security Test is a free online scanner from ImmuniWeb, a Swiss security company whose main business is an AI-driven application security platform. You enter a hostname and the test analyzes the SSL/TLS stack for cryptographic flaws and misconfigurations, then checks the configuration against PCI DSS requirements, HIPAA guidance, and NIST guidelines.
Scoring starts at 100, with points deducted for compliance failures and exploitable weaknesses and points added for extra best practices. The test handles both web and email servers, includes a post-quantum cryptography check, and can produce a PDF report. There’s an API with a free tier of 8 tests per day, plus Docker and Python options for CI/CD integration. The tool has run well over 100 million tests, so it’s clearly widely used.
Where ImmuniWeb SSL Test falls short
The compliance mapping is genuinely useful. The problems show up when your responsibility is bigger than one hostname.
One hostname per test. Each scan targets a single server. If you run 40 subdomains, that’s 40 separate tests, kicked off and reviewed one at a time. The free API caps out at 8 tests per day, which doesn’t get you far across a real environment.
No discovery. The test checks what you already know about. It doesn’t search Certificate Transparency logs or enumerate DNS to find hosts under your domain. The subdomain someone spun up two years ago and never decommissioned stays invisible, and that’s usually where the weak configuration lives.
No monitoring or alerts. A test is a snapshot. There’s no scheduled re-scanning of your hosts and no notification when a configuration regresses or a certificate approaches expiration. Continuous monitoring exists, but on ImmuniWeb’s paid platform.
No aggregated view. You get a grade per hostname, in separate results. There’s no way to roll 40 individual tests into one posture score for the domain, so answering “how does our TLS look overall?” means collating results by hand.
Limited exports. Full technical details and PDF downloads sit behind premium status. There’s no CSV or JSON export covering all your hosts at once, which makes audit evidence for a whole domain tedious to assemble.
None of this is an accident. The free test is a front door for ImmuniWeb’s paid platform, and it does that job well. It just isn’t built to be your domain-wide TLS tool.
How SSLBoard is different
SSLBoard works at the domain level. You type a domain, and it discovers hostnames via Certificate Transparency logs and DNS enumeration, then performs active TLS handshakes against every resolved IP. A few minutes later you have a single report covering your entire public TLS surface.
The report covers certificates (expiration timelines, issuer distribution, key types and sizes), TLS protocol versions with any endpoint still accepting 1.0 or 1.1 flagged alongside associated CVEs, cipher suites mapped to the hosts that accept them (3DES, RC4, EXPORT, NULL, CBC-mode weaknesses), forward secrecy, RSA vs. ECC key distribution, HTTP security headers like HSTS, DNSSEC and CAA records, and post-quantum key exchange support such as X25519Kyber768.
The findings roll up into a weighted posture score broken down by category, so you can track improvement over time or compare domains. Every report is shareable via a link, with CSV, Markdown, and JSON exports. No account, no daily test quota, no premium tier standing between you and the full technical details.
When to use ImmuniWeb SSL Test vs. SSLBoard
ImmuniWeb SSL Test is a good fit when you need a compliance-oriented deep dive on one specific server, especially if an auditor wants evidence against PCI DSS or HIPAA requirements for that host. The email server testing is also something most TLS scanners skip.
SSLBoard is a better fit when you’re responsible for a whole domain and need to see everything at once: which hosts exist, what they serve, and where the weak spots are. Before a compliance review, after a certificate rotation, when evaluating a vendor, or whenever you need one answer for the whole environment instead of a stack of single-host grades.
Getting started
Go to sslboard.com, type your domain, and wait a few minutes. Your first scan is always free, with the full report including score, findings, and per-host breakdowns. No account required.