20+ professional-grade network diagnostic and security tools, organized into four powerful categories.
Send packets to devices and analyze their responses. Find active hosts, open ports, and network paths.
Send ICMP echo requests with configurable count, timeout, and TTL. Results stream in real-time with a live latency chart showing min, max, and average round-trip times. Identify packet loss and network jitter at a glance.
Trace the full network path from your machine to any destination. Each hop is displayed with its IP address and round-trip latency, making it easy to pinpoint where delays or failures occur in the routing chain.
Scan any host for open TCP ports using connect scanning. Supports comma-separated port lists and ranges (e.g. 1-1024). Identifies well-known services like HTTP, SSH, RDP, and MySQL by port number. Progress bar shows scan status.
Sweep an entire IP address range to discover active hosts. Scans up to 1024 addresses concurrently, showing which hosts are alive and which are down. Essential for network inventory and discovery.
View your system's ARP table showing all known IP-to-MAC address mappings on your local network segment. Useful for identifying devices and detecting ARP spoofing.
Send a magic packet to remotely power on any Wake-On-LAN enabled device using its MAC address. Broadcasts the packet across your local subnet.
Test connectivity to any SMTP mail server. Connects to the server, sends an EHLO command, and displays the full server response including supported extensions and capabilities.
Capture and analyze network packets in real-time with a professional-grade built-in analyzer. Monitor live TCP and UDP connections with automatic process identification (PID tracking). Features include:
Works in two modes: full packet capture (requires Administrator) using Windows' built-in pktmon/netsh trace, or live connection monitor mode that runs without elevated privileges.
Query, resolve, and research domain names and IP addresses with professional DNS tools.
Query any of 10 DNS record types — A, AAAA, MX, NS, CNAME, TXT, SOA, PTR, SRV, and ANY — from any DNS server. Specify a custom DNS server or use your system default. Works like nslookup and dig combined.
Resolve up to 100 hostnames or IP addresses in a single operation. Paste a list of targets, select a record type, and get all results at once. Perfect for bulk DNS auditing and migration verification.
Find domain registration and IP ownership information by connecting directly to WHOIS servers — no API keys needed. Supports all major TLDs with automatic registrar referral. For IP addresses, queries ARIN, RIPE, and other regional registries.
Gather intelligence without sending probes. Monitor connections, inspect certificates, and check reputations.
View all active TCP and UDP connections on your system in real-time, including local and remote addresses, ports, and connection states. The network equivalent of Task Manager for connections.
Inspect the TLS/SSL certificate of any domain. Displays subject, issuer, validity dates, days until expiration, cipher suite, protocol version, fingerprint, and SAN (Subject Alternative Names).
Map any IP address to its physical location. Returns country, region, city, coordinates, timezone, ISP, organization, and AS number. Useful for identifying the origin of suspicious traffic.
Check if an IP address is listed on 9 major DNS-based blacklists (DNSBL) including Spamhaus ZEN, SpamCop, Barracuda, SORBS, and more. Essential for email deliverability troubleshooting.
Fetch and display the full HTTP response headers from any URL. Check security headers (CSP, HSTS, X-Frame-Options), caching policies, server identification, and redirect behavior.
Handy tools for subnet math, interface details, traffic statistics, and system diagnostics.
Enter any CIDR notation and instantly get the network address, broadcast address, first/last usable host, total usable hosts, wildcard mask, binary subnet mask, IP class, and private/public status.
Display all network adapters with full configuration: IPv4/IPv6 addresses, MAC addresses, DHCP settings, DNS servers, subnet masks, and default gateways.
View interface-level Ethernet statistics: bytes sent/received, unicast/non-unicast packets, discards, errors, and unknown protocols.
View your system's hostname, OS version, architecture, CPU, total/free/used memory, uptime, and all network interface addresses with their MAC addresses.
Download NetPulse Pro free — no signup, no API keys, no subscriptions.
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