Networking
What Is My IP Address
See your public IP address, IP version, browser network details, and optional device location without third-party lookup services.
Utility categories
Workspace
Networking Utilities
Practical IPv4, IPv6, DNS, ports, and bandwidth helpers.
Utilities search
Search results
No utilities found. Try another keyword or browse a category.
Curated
Popular utilities
Networking
Subnet Calculator
Calculate IPv4 network, broadcast, mask, and host ranges.
Networking
CIDR ↔ Subnet Mask
Convert contiguous IPv4 subnet masks and CIDR prefixes.
Networking
IPv6 Subnet Calculator
Inspect IPv6 prefixes without enumerating their address space.
Networking
Port Reference
Search a curated reference of common TCP and UDP ports.
Networking
DNS Record Builder
Build safe DNS zone-file record text without making changes.
Your workspace
Recently used
Your workspace
Favorites
Organized
Networking utility groups
Networking
IPv4
Networking
What Is My IP Address
See your public IP address, IP version, browser network details, and optional device location without third-party lookup services.
Networking
Subnet Calculator
Calculate IPv4 network, broadcast, mask, and host ranges.
Networking
IP Address Converter
Convert IPv4 addresses between decimal, integer, binary, and hex.
Networking
IPv4 Binary Converter
Learn and convert between dotted IPv4 and grouped binary.
Networking
IPv6
Networking
IPv6 Subnet Calculator
Inspect IPv6 prefixes without enumerating their address space.
Networking
IPv6 Compressor / Expander
Validate and convert IPv6 addresses to canonical forms.
Networking
Subnetting
Networking
CIDR ↔ Subnet Mask
Convert contiguous IPv4 subnet masks and CIDR prefixes.
Networking
VLSM Calculator
Allocate non-overlapping variable-length IPv4 subnets.
Networking
IP Range → CIDR
Summarize an inclusive IPv4 range into exact CIDR blocks.
Networking
CIDR Aggregator / Summarizer
Normalize and merge adjacent IPv4 CIDR blocks safely.
Networking
Subnet Splitter
Split an IPv4 parent network into bounded equal subnets.
Networking
DNS & Ports
Networking
Port Reference
Search a curated reference of common TCP and UDP ports.
Networking
DNS Record Builder
Build safe DNS zone-file record text without making changes.
Networking
URL / Host Parser
Inspect URL parts while masking any supplied password.
Networking
Bandwidth & Transfer
Networking
Transfer Time Calculator
Estimate transfer duration from data size and bandwidth.
Networking
MTU / MSS Calculator
Estimate TCP MSS for common IPv4 and IPv6 MTUs.
Networking
Bandwidth Converter
Convert bits and bytes per second with explicit units.
Available now
Tools in this category
Networking
What Is My IP Address
See your public IP address, IP version, browser network details, and optional device location without third-party lookup services.
Networking
Subnet Calculator
Calculate IPv4 network, broadcast, mask, and host ranges.
Networking
CIDR ↔ Subnet Mask
Convert contiguous IPv4 subnet masks and CIDR prefixes.
Networking
IPv6 Subnet Calculator
Inspect IPv6 prefixes without enumerating their address space.
Networking
VLSM Calculator
Allocate non-overlapping variable-length IPv4 subnets.
Networking
IP Range → CIDR
Summarize an inclusive IPv4 range into exact CIDR blocks.
Networking
Port Reference
Search a curated reference of common TCP and UDP ports.
Networking
DNS Record Builder
Build safe DNS zone-file record text without making changes.
Networking
Transfer Time Calculator
Estimate transfer duration from data size and bandwidth.
Networking
IP Address Converter
Convert IPv4 addresses between decimal, integer, binary, and hex.
Networking
IPv4 Binary Converter
Learn and convert between dotted IPv4 and grouped binary.
Networking
CIDR Aggregator / Summarizer
Normalize and merge adjacent IPv4 CIDR blocks safely.
Networking
Subnet Splitter
Split an IPv4 parent network into bounded equal subnets.
Networking
IPv6 Compressor / Expander
Validate and convert IPv6 addresses to canonical forms.
Networking
MAC Address Formatter
Normalize valid 48-bit MAC addresses into common formats.
Networking
MTU / MSS Calculator
Estimate TCP MSS for common IPv4 and IPv6 MTUs.
Networking
Bandwidth Converter
Convert bits and bytes per second with explicit units.
Networking
URL / Host Parser
Inspect URL parts while masking any supplied password.
No utilities found. Try another keyword or browse categories.