GreyNoise
Threat intelligence on IPs scanning and attacking the internet, from a global sensor network.
Updated · AppBreakup editorial · Web
Is GreyNoise free?
Free plan, plus paid plans
- Free plan:
- Community tier for IP lookups
Checked on GreyNoise's site Nov 8, 2026
Switch from GreyNoise to
All 4
ShodanStarting price: $49 one-time (Membership)
CensysFree plan + paid
Recorded FuturePaid
- Verified facts
- 4 of 4
- Alternatives ranked
- 4
- Approved reviews
- 0
- Visits sent from here
- 0
About GreyNoise
GreyNoise runs a large network of sensors that record the mass scanning and exploitation traffic hitting the internet, and turns it into intelligence about the IP addresses behind it. Security analysts use it to tell whether an IP in their alerts is a known scanner, a benign service like a search engine crawler, or part of an active attack campaign, which cuts down time spent on noise. It offers IP lookups, a query language, tags for specific vulnerabilities and tools, activity timelines, dynamic blocklists and data on which CVEs are being exploited right now. Paid customers buy a platform tier plus intelligence modules such as triage, investigation, hunting or vulnerability prioritisation, and get integrations with SIEM, SOAR, threat intelligence platforms and firewalls. A free community tier allows basic lookups with a weekly search limit. It works through the web interface and API. It suits SOC teams and researchers triaging alerts and prioritising patching.
Best for: SOC teams and security researchers who want to filter scanner noise and spot active exploitation.
GreyNoise pricing (checked Nov 8, 2026)
Each line is quoted from GreyNoise's own site, with the page it came from.
| Plan or term | What it says | Checked | Source |
|---|---|---|---|
| Free plan | Community tier for IP lookups | Nov 8, 2026 | greynoise.io |
| Pricing structure | Platform tier plus modules | Nov 8, 2026 | greynoise.io |
Pros and cons
What works
- Separates harmless scanners from real attack traffic
- Live data on which vulnerabilities are being exploited
- Free community tier for basic IP lookups
- Paid tiers include SIEM, SOAR and firewall integrations
Why people leave
- Paid pricing is not published
- Free tier has a low weekly search limit
- Only sees traffic that reaches its sensors, not full exposure data
GreyNoise vs Shodan, Censys and Recorded Future
From each app's listing and the prices verified on its own site. A dash means we haven't verified it yet.
| Attribute | GreyNoise | Shodan | Censys | Recorded Future |
|---|---|---|---|---|
| Pricing | Free plan + paid | Free plan + paid | Free plan + paid | Paid |
| Verified price | — | $49 one-time (Membership) | — | — |
| Free plan | Community tier for IP lookups | Yes | Yes (basic visibility) | No |
| Open source | No | No | No | No |
| Self-hostable | No | No | No | No |
| Platforms | Web | Web | Web | Web, Browser extension |
Top GreyNoise alternatives
See all 4- 1Shodan54.4
Shows what services an IP exposes, useful context when investigating a suspicious address.
- 2Censys52.6
Internet-wide scan data and attack surface tools for enriching IP and host investigations.
- 3Recorded Future42.3
Much broader intelligence covering actors, malware, dark web and fraud, not just scanning IPs.
- 4
MISP42.3Free self-hosted platform to store, correlate and share your own indicators with peers.
Why people left GreyNoise
In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.
No switching stories yet. If you moved away from GreyNoise, review the app you switched to and tell us why.
Reviews
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GreyNoise: common questions
What is GreyNoise?
GreyNoise: Threat intelligence on IPs scanning and attacking the internet, from a global sensor network. Best for SOC teams and security researchers who want to filter scanner noise and spot active exploitation. Available for Web.
Is GreyNoise free?
GreyNoise has a free plan and paid plans. Free plan: Community tier for IP lookups (checked on GreyNoise's own site).
How much does GreyNoise cost?
GreyNoise is free with paid plans. Free plan: Community tier for IP lookups; Pricing structure: Platform tier plus modules. Checked on GreyNoise's own site, November 2026.
Is GreyNoise open source?
No, GreyNoise is not open source. Open-source alternatives include MISP.
What platforms does GreyNoise run on?
GreyNoise is available for Web.
What are the best alternatives to GreyNoise?
The highest-ranked GreyNoise alternatives right now are Shodan, Censys and Recorded Future. See the full ranked list for pricing, platforms and verified facts.
GreyNoise vs Shodan: what's the difference?
Both GreyNoise and Shodan are free with paid plans. Both run on Web.