Is Mozilla tls scanner API down?
Current status, daily uptime history and troubleshooting for the Mozilla tls scanner API (Security).
No, Mozilla tls scanner is up
Mozilla tls scanner answered our last daily check (Oct 24, 2026, 12:25 UTC) in 989 ms with HTTP 200.
Checking Mozilla tls scanner now…
Sending a request from our server.
Mozilla tls scanner API uptime history
- Uptime
- 2 checks so far
- Last check
- Oct 24, 2026, 12:25 UTC
- Response
- 989 ms · HTTP 200
- Last up
- Now
We check Mozilla tls scanner's listed URL (https://github.com/mozilla/tls-observatory#api-endpoints) once a day. History started when Mozilla tls scanner was first checked, so new entries show fewer than 30 days.
Mozilla tls scanner API not working for you?
- A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header.
- If calls fail only in the browser with a CORS error, Mozilla tls scanner may not allow cross-origin requests. Call it from your server instead.
- If it works from one network but not another, check firewalls, VPNs and regional blocks.
- Check the provider's documentation, status page or social accounts for planned maintenance or a changed endpoint.
Security APIs up at their last check
- 1
Presend API
Online · 399 msSecurity and developer utility API -- malware, vulnerability, and domain checks, no signup.
- No API key needed
- Fast: 399 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 2
IPGuardian API
Online · 940 msCheck IP addresses against 140+ public threat intelligence blocklists.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 3
IPLogs API
Online · 762 msFree VPN, proxy, Tor and datacenter IP detection. 13 sources, active probing.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 4
OSV API
Online · 608 msOpen source vulnerability database and distributed triage infrastructure.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 5
Passwordinator API
Online · 730 msGenerate random passwords of varying complexities.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
Compare all Mozilla tls scanner alternatives · APIs down right now
Mozilla tls scanner API status FAQ
Is Mozilla tls scanner API down right now?
Mozilla tls scanner answered our last daily check (Oct 24, 2026, 12:25 UTC) in 989 ms with HTTP 200. This page also runs a live check from our server when you open it, so you can see whether Mozilla tls scanner is responding at this moment.
How do you check whether Mozilla tls scanner API is up?
Once a day our checker requests Mozilla tls scanner's listed URL (https://github.com/mozilla/tls-observatory#api-endpoints) and records whether it answers within 15 seconds. Answers like 401 (needs a key), 403 (blocks bots) or 429 (rate-limited) count as up, because the server responded. The listed URL is often the documentation page, so an API endpoint can occasionally fail while its docs stay up.
What can I use if Mozilla tls scanner API is down?
Free Security APIs that were up at their last check include Presend, IPGuardian, IPLogs. See the full list of Mozilla tls scanner alternatives for a comparison.
Why does Mozilla tls scanner API work for others but not for me?
A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header. If calls fail only in the browser with a CORS error, Mozilla tls scanner may not allow cross-origin requests. Call it from your server instead. If it works from one network but not another, check firewalls, VPNs and regional blocks.