Is GreyNoise API down?
Current status, daily uptime history and troubleshooting for the GreyNoise API (Security).
No, GreyNoise is up
GreyNoise answered our last daily check (Oct 24, 2026, 12:25 UTC) in 1221 ms with HTTP 200.
Checking GreyNoise now…
Sending a request from our server.
GreyNoise API uptime history
- Uptime
- 2 checks so far
- Last check
- Oct 24, 2026, 12:25 UTC
- Response
- 1221 ms · HTTP 200
- Last up
- Now
We check GreyNoise's listed URL (https://docs.greynoise.io/reference/getcommunityip) once a day. History started when GreyNoise was first checked, so new entries show fewer than 30 days.
GreyNoise API not working for you?
- GreyNoise needs an API key. A 401 or 403 usually means a missing, expired or mis-sent credential: check whether it belongs in a header or the query string.
- 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, GreyNoise 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
GreyNoise API status FAQ
Is GreyNoise API down right now?
GreyNoise answered our last daily check (Oct 24, 2026, 12:25 UTC) in 1221 ms with HTTP 200. This page also runs a live check from our server when you open it, so you can see whether GreyNoise is responding at this moment.
How do you check whether GreyNoise API is up?
Once a day our checker requests GreyNoise's listed URL (https://docs.greynoise.io/reference/getcommunityip) 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 GreyNoise API is down?
Free Security APIs that were up at their last check include Presend, IPGuardian, IPLogs. See the full list of GreyNoise alternatives for a comparison.
Why does GreyNoise API work for others but not for me?
GreyNoise needs an API key. A 401 or 403 usually means a missing, expired or mis-sent credential: check whether it belongs in a header or the query string. 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, GreyNoise may not allow cross-origin requests. Call it from your server instead.