Batch IP Lookup
Resolve up to 100 IPs/domains at once; copy or export results as CSV.
Explore →CIDR / Network Range Lookup
CIDR, IP range or single-IP network calculation with location lookup.
Explore →Subnet Mask Calculator
Subnet mask, broadcast address and usable hosts in one click.
Explore →WHOIS Lookup
Check a domain's registrar, registration and expiry dates.
Explore →DNS Lookup
View all DNS records of a domain in one place.
Explore →IP Utilities
List organizer, random IP, IPv4↔IPv6, CIDR merge, port reference.
Explore →Network Check
Test host connectivity, ports and public DNS latency.
Explore →Check My Public IP
Check your public IP and its location in one click.
Explore →IP Converter
Convert between IPv4 dotted-decimal and decimal. Type in either field.
IPv4 ↔ IPv6 Mapping
Convert between IPv4 and IPv6 mapped addresses (::ffff:x.x.x.x); type in either side to convert automatically.