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Criminal IP alternatives: 6 apps ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rankAll internet exposure search engines

Top picks

  • Shodan logo

    Best overall

    Shodan

    Starting price: $49 one-time (Membership)

  • Censys logo

    Best free option

    Censys

    Free plan + paid

Common reasons people leave Criminal IP: no public pricing on the main website, and search engine lives on a separate site from the product pages. We ranked 6 alternatives by how directly each one replaces Criminal IP, then by reviews, real visits and how recently each app's facts were checked against its own website. Shodan currently ranks first.

Quick comparison

#AppPricingVerified priceOpen sourcePlatformsVerified factsScore
1Shodan logoShodanFree plan + paid$49 one-time (Membership)NoWeb8 of 868.8
2Censys logoCensysFree plan + paid—NoWeb3 of 364.8
3ZoomEye logoZoomEyeFree plan + paid—NoWeb4 of 459.4
4FoFOFAFree plan + paid$25 a month, Personal plan (discounted from $49)NoWeb9 of 957.5
5LeakIX logoLeakIXFree plan + paid€25/month (Bounty Hunter)NoWeb5 of 555.9
6GreyNoise logoGreyNoiseFree plan + paid—NoWeb4 of 452.6
  1. Shodan logo

    1. ShodanTop pick

    Best for: Security researchers and IT teams checking what devices and services are exposed on the Internet

    Free plan + paidWeb

    68.8

    score / 100

    Why switch from Criminal IP

    The best-known device search engine, with a one-time membership and a large community of filters and examples.

    Pros

    • Long-established index of device banners across the Internet
    • Official CLI and Python library for scripting searches
    • Network monitoring alerts for your own IP ranges

    Cons

    • Requires learning its filter syntax to get useful results
    • Filters, bulk downloads and scans consume paid credits
    • Website blocks many automated requests, making some info hard to reach
    Visit Shodan Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Shodan a good Criminal IP alternative?

    Verified facts

    8 of 8 verified
    What it indexes
    Internet-connected devices
    Checked Nov 8, 2026help.shodan.io(opens source in a new tab)
    Command-line tool
    Yes, installed with pip
    Checked Nov 8, 2026cli.shodan.io(opens source in a new tab)
    Query credits
    1 credit = 100 results
    Checked Nov 8, 2026help.shodan.io(opens source in a new tab)
    On-demand scanning
    1 scan credit per IP
    Checked Nov 8, 2026help.shodan.io(opens source in a new tab)
    Starting price
    $49 one-time (Membership)
    Checked Nov 8, 2026account.shodan.io(opens source in a new tab)
    Freelancer plan
    $69 a month
    Checked Nov 8, 2026account.shodan.io(opens source in a new tab)
    Small Business plan
    $359 a month
    Checked Nov 8, 2026account.shodan.io(opens source in a new tab)
    Corporate plan
    $1,099 a month
    Checked Nov 8, 2026account.shodan.io(opens source in a new tab)
  2. Censys logo

    2. Censys

    Best for: Security teams that need Internet-wide host and certificate data plus attack surface management

    Free plan + paidWeb

    64.8

    score / 100

    Why switch from Criminal IP

    Strong certificate and host data with a free research tier, popular for attack surface and academic work.

    Pros

    • Broad data covering hosts, ports, certificates, websites and DNS
    • Attack surface management and threat hunting built on the same data
    • API access included on all plans

    Cons

    • Free account covers only basic visibility into standard ports
    • Credit-based billing makes costs harder to predict
    • Larger plans go through sales demos
    Visit Censys Details and reviews
    How this score is calculated
    Editorial fit ×0.387
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Censys a good Criminal IP alternative?

    Verified facts

    3 of 3 verified
    Free plan
    Yes (basic visibility)
    Checked Nov 8, 2026censys.com(opens source in a new tab)
    API
    Included on all plans
    Checked Nov 8, 2026censys.com(opens source in a new tab)
    Data covered
    IPs, ports, certificates, websites, DNS
    Checked Nov 8, 2026censys.com(opens source in a new tab)
  3. ZoomEye logo

    3. ZoomEye

    Best for: Security researchers and red teams who want a Shodan-style index with strong coverage of Asian networks.

    Free plan + paidWeb

    59.4

    score / 100

    Why switch from Criminal IP

    Large Chinese-run asset search engine with a free tier and its own query language for devices and web apps.

    Pros

    • Covers devices, services and web components across IPv4, IPv6 and domains
    • Official Python library and CLI for scripted searches
    • MCP server lets AI assistants query the index directly
    • Free registered tier for occasional searches

    Cons

    • Free allowance is small; bulk queries and exports need paid credits
    • Some documentation and support content is Chinese-first
    • Main site renders with JavaScript, so it's awkward without a modern browser
    Visit ZoomEye Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is ZoomEye a good Criminal IP alternative?

    Verified facts

    4 of 4 verified
    Owner
    Knownsec
    Checked Nov 6, 2026github.com(opens source in a new tab)
    CLI
    Official Python library and CLI
    Checked Nov 6, 2026github.com(opens source in a new tab)
    CLI license
    GPL-2.0
    Checked Nov 6, 2026github.com(opens source in a new tab)
    MCP server
    Yes
    Checked Nov 6, 2026github.com(opens source in a new tab)
  4. Fo

    4. FOFA

    Best for: Pentesters and bug bounty hunters who need fingerprint-based asset discovery with an affordable API.

    Free plan + paidWeb

    57.5

    score / 100

    Why switch from Criminal IP

    Asset search with rich web fingerprint rules, widely used by Asian security researchers.

    Pros

    • Large fingerprint rule library identifies specific products and versions
    • Free registered tier with monthly query credits
    • Query API with host and statistics aggregation on paid plans
    • Pay-as-you-go F Points for occasional bulk downloads

    Cons

    • Free tier is for non-commercial use only
    • Some pages, including company information, are only in Chinese
    • Most API fields and syntaxes are locked behind higher plans
    Visit FOFA Details and reviews
    How this score is calculated
    Editorial fit ×0.363
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is FOFA a good Criminal IP alternative?

    Verified facts

    9 of 9 verified
    Free plan
    Yes, 300 query credits/month, non-commercial
    Checked Nov 8, 2026en.fofa.info(opens source in a new tab)
    Free plan use
    Non-commercial only
    Checked Nov 8, 2026en.fofa.info(opens source in a new tab)
    API
    Query API on paid plans
    Checked Nov 8, 2026en.fofa.info(opens source in a new tab)
    Pay-as-you-go
    F Points credits
    Checked Nov 8, 2026en.fofa.info(opens source in a new tab)
    Owner
    Hunan Huashun Xin'an Technology
    Checked Nov 8, 2026en.fofa.info(opens source in a new tab)
    Starting price
    $25 a month, Personal plan (discounted from $49)
    Checked Nov 8, 2026en.fofa.info(opens source in a new tab)
    Professional plan
    $119 a month (discounted from $149)
    Checked Nov 8, 2026en.fofa.info(opens source in a new tab)
    Business plan
    $1,199 a month (discounted from $1,499)
    Checked Nov 8, 2026en.fofa.info(opens source in a new tab)
    F Points
    10,000 F Points for $6
    Checked Nov 8, 2026en.fofa.info(opens source in a new tab)
  5. LeakIX logo

    5. LeakIX

    Best for: Bug bounty hunters and small security teams hunting exposed services and data leaks

    Free plan + paidWeb

    55.9

    score / 100

    Why switch from Criminal IP

    Focuses on leaks and misconfigurations with low-cost plans and a responsible disclosure workflow.

    Pros

    • Focus on real leaks and misconfigurations, not just open ports
    • Low-cost paid plans with alerting on your own assets
    • Built-in responsible disclosure workflow with a grace period
    • Free account includes API access

    Cons

    • Free results are delayed by 15 days
    • API limited to 1 request per second on all plans
    • Commercial use requires the Enterprise plan
    Visit LeakIX Details and reviews
    How this score is calculated
    Editorial fit ×0.357
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is LeakIX a good Criminal IP alternative?

    Verified facts

    5 of 5 verified
    Free plan
    €0/month, 3,000 API requests
    Checked Nov 8, 2026leakix.net(opens source in a new tab)
    Starting price
    €25/month (Bounty Hunter)
    Checked Nov 8, 2026leakix.net(opens source in a new tab)
    Free results delay
    15 days
    Checked Nov 8, 2026leakix.net(opens source in a new tab)
    API rate limit
    1 request per second
    Checked Nov 8, 2026leakix.net(opens source in a new tab)
    Disclosure grace period
    30 days
    Checked Nov 8, 2026leakix.net(opens source in a new tab)
  6. GreyNoise logo

    6. GreyNoise

    Best for: SOC teams and security researchers who want to filter scanner noise and spot active exploitation

    Free plan + paidWeb

    52.6

    score / 100

    Why switch from Criminal IP

    Focuses on who is scanning the internet, so it filters scanner noise from alerts instead of mapping exposed hosts.

    Pros

    • 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

    Cons

    • Paid pricing is not published
    • Free tier has a low weekly search limit
    • Only sees traffic that reaches its sensors, not full exposure data
    Visit GreyNoise Details and reviews
    How this score is calculated
    Editorial fit ×0.346
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is GreyNoise a good Criminal IP alternative?

    Verified facts

    4 of 4 verified
    Free plan
    Community tier for IP lookups
    Checked Nov 8, 2026greynoise.io(opens source in a new tab)
    Pricing structure
    Platform tier plus modules
    Checked Nov 8, 2026greynoise.io(opens source in a new tab)
    Integrations
    SIEM, SOAR, TIP, firewall
    Checked Nov 8, 2026greynoise.io(opens source in a new tab)
    Founder
    Andrew Morris
    Checked Nov 8, 2026greynoise.io(opens source in a new tab)

The best Criminal IP alternative for…

The highest-ranked app in this list for each need.

Shodan logo

Best Criminal IP alternative for most people

Shodan

The best-known device search engine, with a one-time membership and a large community of filters and examples.

Censys logo

Best Criminal IP alternative for a free plan you can upgrade

Censys

Strong certificate and host data with a free research tier, popular for attack surface and academic work.

ZoomEye logo

Best Criminal IP alternative for working in the browser

ZoomEye

Large Chinese-run asset search engine with a free tier and its own query language for devices and web apps.

Criminal IP alternatives: common questions

What is the best alternative to Criminal IP?

Shodan ranks first right now. The best-known device search engine, with a one-time membership and a large community of filters and examples. Censys and ZoomEye follow it in our ranking.

Criminal IP vs Shodan: what's the difference?

Both Criminal IP and Shodan are free with paid plans. Both run on Web.

Is Criminal IP free?

Criminal IP is free with paid plans. Free plan: Yes (free membership). Checked on Criminal IP's own site, November 2026.

How much do Criminal IP alternatives cost?

Verified prices for the top-ranked Criminal IP alternatives: Shodan, $49 one-time (Membership); FOFA, $25 a month, Personal plan (discounted from $49); LeakIX, €25/month (Bounty Hunter). Each price was checked on the app's own site; see each card below for the date and source.

Is there a free alternative to Criminal IP?

Yes. Shodan (free plan + paid), Censys (free plan + paid), ZoomEye (free plan + paid) and FOFA (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Criminal IP?

None of the 6 alternatives in this list is open source.

Why do people switch from Criminal IP?

The complaints we hear most: no public pricing on the main website; search engine lives on a separate site from the product pages; enterprise purchases and training go through sales contracts.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Criminal IP, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.