Instant network tools for engineers.

Zero-effort, zero-login utilities for network engineers, sysadmins, and developers — every tool below shows a useful result the instant you land, no forms required.

IP Subnet Calculator

Break down IPv4 and IPv6 CIDR blocks into network/broadcast addresses, usable host ranges, masks, and reverse DNS zones — auto-detected from your input.

Network

UUID Generator

Generate UUID v4 and v7 identifiers instantly, single or in batch, with uppercase/lowercase and hyphen formatting plus plain text, CSV, or JSON export.

Generate

DNS Lookup

Resolve A, AAAA, MX, TXT, NS, and CNAME records over DNS-over-HTTPS with a primary and fallback resolver, showing TTL and lookup duration.

DNS

MAC Address Inspector

Normalize MAC addresses as you type, look up the vendor/OUI, and detect locally/universally administered, unicast/multicast, and randomized addressing.

Network