For engineers and security professionals
Know your network.
Own your threat surface.
49 tools across networking, security, RF, and electronics — free to start, no account required.
Results, not raw numbers.
CyrusX takes raw inputs — an IP, a domain, a circuit, a frequency — and surfaces what actually matters. Risk levels, cloud providers, security gaps, and actionable context.
Every lookup interprets the data — risk scoring, cloud detection, and security context included.
Six disciplines. One platform.
The tools engineers reach for first.
Simple. Free to start.
- —38 tools, no account required
- —DNS, subnet, WHOIS, CVE, SSL & more
- —Full electronics & RF calculators
- —AI Job Exposure Map
- —No rate-limit games
- ✓Everything in Free
- ✓Domain Intelligence — full-picture scans
- ✓Vulnerability Intelligence & AppSec Console
- ✓Bulk IP, VLSM, RF link budget, net scanner
- ✓Saved reports & dashboard
Common questions
What is CyrusX?+
CyrusX is a free engineering and security toolkit for network engineers, RF designers, security professionals, and anyone navigating AI's impact on the workforce. It provides 49 tools across six disciplines: network engineering, threat intelligence & OSINT, pen testing & recon, electrical engineering, RF engineering, and artificial intelligence.
Is CyrusX free to use?+
Yes. 29 CyrusX tools are completely free with no account required — including the AI Job Exposure Map. A Pro plan ($9.99/month) unlocks 9 advanced tools including Domain Intelligence, AppSec Console, Vulnerability Intelligence, bulk IP lookup, VLSM calculator, RF link budget, network scanner, and more.
What tools does CyrusX offer?+
CyrusX offers 49 tools including: Subnet Calculator, IP to Binary Converter, DNS Lookup, MAC Lookup, BGP/ASN Lookup, Ping, IP Reputation, WHOIS, CVE Lookup, Subdomain Finder, URL Scanner, Password Breach Checker, Email Header Analyzer, HTTP Headers Inspector, SSL Certificate Checker, JWT Decoder, Hash Generator, Base64 Encoder/Decoder, Circuit Builder, Ohm's Law Calculator, Resistor Color Code Decoder, Voltage Divider Calculator, Frequency/Wavelength Converter, RC Time Constant Calculator, Reactance Calculator, Wire Gauge/AWG Calculator, dB/dBm/dBW Converter, DIY Workshop, Electronics Workshop, AI Job Exposure Map, Phone Number Lookup, Email Fraud Checker, AI Image / Deepfake Forensics, Crypto Address Risk Checker, BIN Lookup, File Hash / Malware Checker — plus 11 Pro tools including Domain Intelligence, AppSec Console, Vulnerability Intelligence, RF Link Budget, Bulk IP Lookup, VLSM Calculator, Network Scanner, Advanced Subnet Breakdown, Network Dashboard, and Port Scanner.
Who is CyrusX designed for?+
CyrusX is designed for network engineers, security analysts, penetration testers, bug bounty hunters, SOC analysts, RF and wireless engineers, electronics hobbyists, sysadmins, IT professionals, and anyone researching AI's impact on the job market.
How does the DNS Lookup tool work?+
The CyrusX DNS Lookup tool queries Google's public DNS resolver for any domain and record type — including A, AAAA, MX, TXT, NS, CNAME, SOA, PTR, SRV, CAA, DS, and DNSKEY records. It also analyzes email security protocols (SPF, DMARC, DKIM) and flags missing or misconfigured records.
What is the RF Link Budget tool?+
The RF Link Budget tool calculates free-space path loss, received signal power, and link margin for wireless communication systems. It supports custom frequency, transmit power, antenna gains, and cable losses — useful for planning point-to-point microwave links, Wi-Fi networks, and satellite systems.
Does CyrusX store my data?+
CyrusX does not store or log the IPs, domains, or URLs you look up. Saved calculations are stored securely in your account and can be deleted at any time. CyrusX does not sell or share your data with third parties.