Network Tools
13 Utilities AvailableFree network diagnostic tools — DNS lookup, WHOIS, ping simulators, port scanning, header inspection, SSL checks.
ZeroDayCops DNS Lookup
Query DNS records (A, AAAA, MX, TXT, NS, CNAME) for any domain.
ZeroDayCops WHOIS Lookup
Retrieve registration details, registrar info, and expiry dates for a domain.
ZeroDayCops Diagnostic Ping Simulator
Simulate network ping ICMP packet exchanges against remote servers.
ZeroDayCops Diagnostic Traceroute
Simulate route hops and packet latency maps to host servers.
MTU Checker & Path Discovery
Determine Maximum Transmission Unit limits along target routes.
IP Geolocation Lookup
Find country, city, coordinates, and ISP host details for IPs.
MAC Address OUI Lookup
Lookup NIC card manufacturing vendor details from MAC addresses.
HTTP Response Header Viewer
Inspect HTTP response headers and security configs for target URLs.
Network Speed Test
Test upload, download speeds, and ping latency client-side.
DNS Propagation Checker
Verify DNS records replication across global resolvers.
Reverse DNS Lookup (rDNS)
Find pointer record domain mappings for IP addresses.
CIDR Subnet Calculator
Calculate network ID, host ranges, and netmasks from CIDR blocks.
TCP Port Scanner
Probe TCP port states for domains or IPs. Gated with SSRF protections.