GreyNoise Alternative for IP Intelligence
ipctl.io provides network intelligence that GreyNoise doesn't: BGP routing, RPKI validation, and prefix analysis - without running scanners or honeypots.
BGP Routing
Full routing table - which ASN originates a prefix, multi-collector visibility
RPKI & IRR
Route origin validation and IRR cross-referencing for routing security
No Scanning
All data from passive, authoritative sources. No honeypots, no probes
Feature Comparison
| Feature | GreyNoise | ipctl.io |
|---|---|---|
| Internet-wide Scanningipctl.io does not scan - privacy-respecting | Yes | No |
| Mass Scanner ClassificationGreyNoise tags known scanners (Shodan, Censys, etc.) | Yes | No |
| RIOT (benign service) Tags | Yes | No |
| IP Geolocation | Yes | Yes |
| ASN Lookup | Yes | Yes |
| BGP Routing DataFull routing table with global visibility | No | Yes |
| RPKI ValidationRoute origin validation for every prefix | No | Yes |
| Threat IntelligenceGreyNoise: scan-based, ipctl: passive multi-source | Yes | Yes |
| Tor Exit Detection | Yes | Yes |
| Abuse Contact Lookup | No | Yes |
| MOAS Detection | No | Yes |
| Prefix Analysis | No | Yes |
| REST API | Yes | Yes |
| Free TierGreyNoise free: 50 searches/week, no API; ipctl: 1k req/day | Yes | Yes |
When to Use Which
Choose GreyNoise if you need
- Mass scanner classification and tagging
- Benign service identification (RIOT)
- Honeypot-based threat intelligence
- Real-time scan activity monitoring
Choose ipctl.io if you need
- BGP routing and prefix analysis
- RPKI validation and routing security
- IP reputation and threat intelligence
- ASN analysis with peer data
- A passive, non-scanning approach
Frequently Asked Questions
Is ipctl.io a replacement for GreyNoise?
Not directly - they complement each other. GreyNoise specializes in classifying mass internet scanners and tagging benign services (RIOT). ipctl.io focuses on network-layer intelligence: BGP routing, RPKI validation, prefix analysis, and IP reputation from passive sources. If you need to know whether an IP is a known scanner, use GreyNoise. If you need routing context and BGP security data, use ipctl.io.
Does ipctl.io classify internet scanners like GreyNoise?
No. GreyNoise runs its own sensors to detect mass scanners and tags them accordingly. ipctl.io does not run sensors or honeypots - it aggregates passive intelligence from authoritative sources like RIR databases, BGP collectors, RPKI repositories, and threat feeds.
What does ipctl.io have that GreyNoise doesn't?
BGP routing data with multi-collector visibility, RPKI route origin validation, MOAS (Multiple Origin AS) detection, IRR cross-referencing, prefix analysis, and abuse contact lookups from RIR databases. These are critical for network operations and routing security - areas GreyNoise does not cover.
Is ipctl.io free?
Yes. All lookups on the website are free with no account required. The REST API offers 250 requests per day without a key and 1,000 per day with a free API key. GreyNoise also has a free tier, limited to 50 searches per week in the web interface without API access.
Can I use both GreyNoise and ipctl.io together?
Yes, and many SOC teams do. Use GreyNoise to determine if an IP is a known mass scanner or benign service, and ipctl.io for BGP routing context, RPKI validation, and network-level reputation. Together they provide both scan-level and routing-level intelligence.
No signup required for 250 API requests per day, 1,000 with a free key.
Free-tier figures checked October 2026. Feature table last reviewed April 2026.
This comparison is provided for informational purposes only. Feature availability, pricing, and capabilities may change without notice. All trademarks belong to their respective owners. ipctl.io is not affiliated with GreyNoise.