IP

Network

IP, DNS, subnet, ASN and network utilities for everyday troubleshooting.

Choose a category

IPIP & Subnetting11 toolsPPorts & Protocols2 toolsMACMAC Addresses1 tool⇩Bandwidth & Transfer1 toolIPOther Network Tools1 tool

IP & Subnetting

IPIPv4 Subnet CalculatorCalculate network, broadcast, host range, count and subnet mask.IPCIDR Prefix & Subnet Mask ConverterConvert an IPv4 CIDR prefix length to a dotted subnet mask and address count.IPHostname to IPResolve a hostname to IPv4 addresses using DNS-over-HTTPS.IPIP Address ClassifierClassify an IPv4 address as private, loopback, link-local, multicast, limited broadcast or other.IPIP Range Address CountCount the number of IPv4 addresses between two endpoints.IPIPv4 Address ConverterConvert an IPv4 address between dotted decimal, 32-bit binary, hexadecimal and unsigned integer forms.IPIPv6 Expand & CompressExpand a valid IPv6 address to eight four-digit groups or compress it to standard short form.PMTU & TCP MSS CalculatorCalculate common TCP maximum segment size from an IP MTU and selected IPv4 or IPv6 header assumptions.IPReverse DNS LookupLook up a PTR record for an IPv4 address.IPWhat's My IP?See your current public IP address.IPIPv4 Wildcard Mask CalculatorCalculate the inverse wildcard mask for an IPv4 subnet mask or CIDR prefix.

Ports & Protocols

PTCP/UDP Port Number LookupLook up common service names for well-known and frequently used TCP or UDP port numbers.IPURL / Host ParserBreak a URL into scheme, hostname, port, path, query string and fragment using the browser URL parser.

MAC Addresses

MACMAC Address Validator & FormatterValidate a 48-bit MAC address and format it using colon, hyphen or Cisco dotted notation.

Bandwidth & Transfer

⇩Download & Transfer Time CalculatorCalculate ideal transfer time from file size and connection speed using explicit decimal or binary units.

Other Network Tools

IPDNS LookupLook up common DNS records using DNS-over-HTTPS.
⚡ FreeNo sign-up required.
🛡 PrivateMost tools run in your browser.
🚀 FastDesigned for instant results.
▣ AnywhereDesktop, tablet or mobile.