Port Number Lookup

Calculate IPv4 subnet details locally from either CIDR notation or an address paired with a subnet mask. The calculator validates every octet, prefix length, and contiguous mask before producing a result. It shows the network address, broadcast address, first and last usable hosts, total address count, usable host count, wildcard mask, CIDR prefix, and subnet mask. Point-to-point /31 networks and single-host /32 routes are handled explicitly instead of applying the usual two-address deduction. The private classification refers only to the RFC1918 ranges; other values are described as public or non-private. All arithmetic stays in your browser. The tool does not contact the address, inspect a network, determine ownership, or claim that any host is reachable.

Parse a complete HTTP or HTTPS URL entirely in your browser without opening, visiting, or fetching the address. The analyzer separates the scheme, hostname, effective port, pathname, query parameters, fragment, origin, and normalized URL produced by native URL semantics. Query keys remain in sequence, including duplicates, while their values are decoded safely for display. Additional indicators identify default or custom ports, localhost names, IPv4 and IPv6 hosts, Punycode labels, and the presence of embedded username or password fields without exposing them as a safety verdict. Unsupported schemes, malformed values, CRLF sequences, and control characters are rejected before analysis. Nothing entered is sent to Tooliba or another service. The result describes URL structure only and cannot establish safety, trustworthiness, ownership, reputation, availability, or destination content.