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Is CSR.plus API down?

Current status, daily uptime history and troubleshooting for the CSR.plus API (Security).

No, CSR.plus is up

CSR.plus answered our last daily check (Oct 24, 2026, 12:25 UTC) in 1200 ms with HTTP 200.

Checking CSR.plus now…

Sending a request from our server.

CSR.plus API uptime history

30 days agoLatest check
Uptime
2 checks so far
Last check
Oct 24, 2026, 12:25 UTC
Response
1200 ms · HTTP 200
Last up
Now

We check CSR.plus's listed URL (https://csr.plus/docs/api) once a day. History started when CSR.plus was first checked, so new entries show fewer than 30 days.

CSR.plus API not working for you?

  1. A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header.
  2. If it works from one network but not another, check firewalls, VPNs and regional blocks.
  3. 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. 1Presend logo

    Presend API

    Online · 399 ms

    Security 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. 2IPGuardian logo

    IPGuardian API

    Online · 940 ms

    Check IP addresses against 140+ public threat intelligence blocklists.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS
    No authHTTPSCORS
  3. 3IPLogs logo

    IPLogs API

    Online · 762 ms

    Free VPN, proxy, Tor and datacenter IP detection. 13 sources, active probing.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS
    No authHTTPSCORS
  4. 4OSV logo

    OSV API

    Online · 608 ms

    Open source vulnerability database and distributed triage infrastructure.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS
    No authHTTPSCORS
  5. 5Passwordinator logo

    Passwordinator API

    Online · 730 ms

    Generate random passwords of varying complexities.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS
    No authHTTPSCORS

Compare all CSR.plus alternatives · APIs down right now

CSR.plus API status FAQ

Is CSR.plus API down right now?

CSR.plus answered our last daily check (Oct 24, 2026, 12:25 UTC) in 1200 ms with HTTP 200. This page also runs a live check from our server when you open it, so you can see whether CSR.plus is responding at this moment.

How do you check whether CSR.plus API is up?

Once a day our checker requests CSR.plus's listed URL (https://csr.plus/docs/api) 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 CSR.plus API is down?

Free Security APIs that were up at their last check include Presend, IPGuardian, IPLogs. See the full list of CSR.plus alternatives for a comparison.

Why does CSR.plus 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 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.