Free Network Tools
Utilities for domains, DNS, IP addresses, SSL and connectivity checks.
DNS Lookup
Query A, AAAA, MX, TXT and other DNS records over HTTPS.
WHOIS / RDAP Lookup
Review public registrar, status, nameserver and lifecycle data.
IP Lookup
Inspect approximate public network, ISP and location metadata.
SSL Checker
Review cached public SSL Labs assessment data.
Website Latency Test
Measure browser-to-site HTTPS response time.
IP Subnet Calculator
Calculate IPv4 network, broadcast, mask and host range.
MAC Address Generator
Generate locally administered unicast MAC addresses.
HTTP Header Parser
Inspect copied request and response header blocks locally.
Domain, DNS and IP diagnostics
Use these tools for quick checks on DNS records, public domain registration data, IP network metadata, SSL assessment and browser-level connectivity timing.
Browser limitations
Some network checks depend on public third-party endpoints and browser CORS rules. Website Latency Test measures HTTPS request timing rather than ICMP ping, and IP geolocation is approximate rather than a precise physical address.