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

Config Syntax Highlighter

Highlight Cisco network configurations locally, then copy rich formatting for email and documents or copy the original plain text.

Network

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