PerimeterAccessibilityBlogWhat we check

Is your site actually secure — and compliant?

Free instant check of your TLS certificate, security headers, DNS/email authentication and accessibility (WCAG) — the four things a security or compliance review always flags. No signup.

Checks the certificate expiry & chain, HSTS/CSP and other headers, DMARC/SPF/CAA, and common WCAG failures (missing alt text, unlabeled fields, zoom blocking). Read-only, from the outside — exactly what an attacker, auditor, or ADA plaintiff's lawyer sees.

What continuous monitoring looks like

After the free check, Perimeter watches your domains every day — here's what you get inside.

Perimeter dashboard listing monitored domains with their security grade and days until certificate expiry
Your dashboard — every domain's grade and certificate countdown at a glance.
Perimeter audit-ready security posture report showing TLS, HTTP header and DNS findings with a dated grade
The dated, audit-ready report — hand it straight to a SOC 2 / ISO 27001 auditor.

One check is a snapshot. The risk is the day it silently breaks.

Certificates expire. A deploy drops a header. DNS gets edited. Perimeter re-checks every day and emails you the moment something regresses — before your customers or your auditor notice.

Agency

$29/mo
  • Watch up to 25 client domains
  • Daily checks, instant alerts on any regression
  • One weekly digest across every domain
  • Never miss a cert expiry again
Get Agency →

Compliance

$49/mo
  • Watch up to 10 domains
  • Dated, audit-ready monthly report
  • Hosted evidence page for SOC 2 / ISO 27001
  • Proof of continuous monitoring
Get Compliance →
FeatureFreeno signupAgency$29/moCompliance$49/mo
Instant TLS, header & DNS check✓✓✓
Accessibility (WCAG/ADA) scan✓✓✓
Continuous daily monitoring—✓✓
Domains monitored1 at a timeup to 25up to 10
Email alert the moment something breaks—✓✓
Weekly digest across all domains—✓✓
Certificate-expiry warnings (30/14/7 days)—✓✓
Dashboard to manage domains—✓✓
Dated, audit-ready monthly report——✓
Hosted SOC 2 / ISO 27001 evidence page——✓

Compliance covers fewer domains than Agency on purpose: Agency is priced for running many client sites, Compliance for proving a smaller estate is in order — the dated monthly report and evidence page are what you're paying for.

Start monitoring → · no demo, no sales call, cancel anytime

14-day refund, no questions asked. Email us within 14 days of your first payment and you get it back in full — see Terms.