Censys Alternative for Network Intelligence
ipctl.io provides BGP routing intelligence, RPKI validation, and IP reputation that Censys doesn't offer - with a free tier and no enterprise sales process.
BGP & RPKI
Full routing table with RPKI validation - data Censys doesn't have
Threat Intel
Multi-source IP reputation, Tor detection, and abuse scoring
Free Self-Serve
1,000 API requests/day free. No sales calls, no enterprise contracts
Feature Comparison
| Feature | Censys | ipctl.io |
|---|---|---|
| Internet-Wide ScanningCensys scans globally; ipctl uses passive data | Yes | No |
| Certificate Transparency | Yes | No |
| Host/Service Discovery | Yes | No |
| IP Geolocation | Yes | Yes |
| ASN Lookup | Yes | Yes |
| BGP Routing DataFull routing table from global collectors | No | Yes |
| RPKI ValidationRoute origin validation for every prefix | No | Yes |
| Threat Intelligence | Yes | Yes |
| Tor Exit Detection | No | Yes |
| Abuse Contact Lookup | No | Yes |
| IRR Cross-Reference | No | Yes |
| MOAS Detection | No | Yes |
| Prefix Analysis | No | Yes |
| REST API | Yes | Yes |
| Free TierCensys free account: basic visibility into standard ports and services | Yes | Yes |
| Self-Serve Paid PlansCensys paid plans are sold through sales | No | Yes |
When to Use Which
Choose Censys if you need
- Internet-wide host and service discovery
- Certificate transparency monitoring
- Attack surface management
- Enterprise-grade scanning infrastructure
Choose ipctl.io if you need
- BGP routing and prefix analysis
- RPKI validation and routing security
- IP reputation and threat intelligence
- Free self-serve API access
- ASN analysis with peer data
Frequently Asked Questions
How does ipctl.io compare to Censys?
Censys specializes in internet-wide scanning, certificate transparency, and host discovery. ipctl.io focuses on network routing intelligence: BGP data, RPKI validation, IP reputation, and ASN analysis. They complement each other rather than directly competing.
Does ipctl.io do internet scanning like Censys?
No. ipctl.io collects data from passive, authoritative sources including regional internet registries and RPKI validators. No active scanning or probing is performed.
Why choose ipctl.io over Censys?
If you need BGP routing data, RPKI validation, or prefix-level analysis, ipctl.io provides these out of the box - features Censys doesn't offer. Both offer a free account; ipctl.io paid plans are self-serve, while Censys paid plans go through sales.
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. Paid plans are self-serve.
Can I use Censys and ipctl.io together?
Yes. Use Censys for host discovery, certificate transparency, and service enumeration. Use ipctl.io for BGP routing context, RPKI validation, IP reputation, and ASN analysis. Together they provide comprehensive network and host-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 Censys.