WebToolArcNetwork Tools
Free browser-based network tools with instant results and no account required.
Subnet Calculator
Calculate IPv4 network, broadcast, host range, subnet mask, and CIDR details.
Network ToolsWhat Is My IP Address?
Show your current public IP address and basic connection information.
Network ToolsDNS Lookup
Look up public DNS records for a domain using DNS-over-HTTPS.
Network ToolsCIDR Calculator
Calculate IPv4 network ranges, masks, host counts, and boundaries from CIDR notation.
Network ToolsSubnet Mask Calculator
Convert IPv4 CIDR prefixes and subnet masks in both directions.
Network ToolsWildcard Mask Calculator
Convert subnet masks and CIDR prefixes to IPv4 wildcard masks.
Network ToolsIP Range Calculator
Calculate the IPv4 range covered by a start and end address.
Network ToolsCIDR to IP Range Converter
Convert IPv4 CIDR notation to network, broadcast, and usable address ranges.
Network ToolsIP Range to CIDR Converter
Convert an IPv4 start/end range into the smallest exact list of CIDR blocks.
Network ToolsIP Address to Binary Converter
Convert an IPv4 address to a 32-bit binary representation.
Network ToolsBinary to IP Address Converter
Convert 32 binary bits to a dotted-decimal IPv4 address.
Network ToolsIP Address to Decimal Converter
Convert an IPv4 address to its unsigned 32-bit decimal integer.
Network ToolsDecimal to IP Address Converter
Convert an unsigned 32-bit decimal integer to IPv4 notation.
Network ToolsIPv4 Address Validator
Validate IPv4 dotted-decimal addresses and inspect their address type.
Network ToolsIPv6 Address Validator
Validate IPv6 addresses and normalize compressed and expanded forms.
Network ToolsIPv6 Address Compressor
Compress a full IPv6 address using standard zero suppression and :: notation.
Network ToolsIPv6 Address Expander
Expand a compressed IPv6 address to eight four-digit hexadecimal hextets.
Network ToolsIPv6 Subnet Calculator
Calculate IPv6 network boundaries and address counts from an address and prefix.
Network ToolsIP Address Type Checker
Classify IPv4 and IPv6 addresses as private, public, loopback, link-local, multicast, documentation, or other special ranges.
Network ToolsCIDR Cheat Sheet
Browse IPv4 CIDR prefixes, subnet masks, wildcard masks, address counts, and usable host counts.