IPs-LE MCP server

IPs-LE: One Address, One Spelling Find every IP address, CIDR block and MAC in a document, normalized and classified, and refuse the ambiguous ones by name IPv4 · IPv6 (RFC 5952) · CIDR · MAC — no DNS, no lookups, no sockets

Useful? A star or rating is how other developers find it —

★ GitHub ·

★ Open VSX ·

★ Marketplace

What it does

An allow-list review asks whether 2001:0db8::0001 is already on the list. The list says 2001:db8::1. A diff of the raw text calls them two addresses; they are one.

Open a document, run IPs-LE: Extract Addresses, and every IPv4 and IPv6 address, CIDR block and MAC address in it is listed by kind with its line and column, the key it sits under, its canonical form and what it is for — loopback, private, link-local, documentation and the rest. A CIDR block comes with its network, its last address and how many addresses it holds. The report opens beside the editor. Works in VS Code and in VS Code–based editors like Cursor and VSCodium (installable from Open VSX).

• Reviewing a config or an allow-list — one spelling per address, and the private ones named as private
• Reading a log — every peer and upstream, even inside a URL or a [host]:port
• Before trusting 010.1.1.1 — which is two different hosts depending on who reads it
• Across a project — every file that holds an address, and how many, in one table

Text it cannot read unambiguously is reported with the reason, never guessed at. It resolves nothing, looks nothing up and rewrites nothing.

Install

What it answers

One address, one form. IPv6 is normalized per RFC 5952 — 2001:0db8:0000:0000:0000:0000:0000:0001, 2001:db8:0:0:0:0:0:1, 2001:0db8::0001 and 2001:DB8::1 all come back as 2001:db8::1. Sorting the raw text gives four addresses; sorting the normalized form gives one.

Four kinds. ipv4, ipv6, cidr, mac.

Shortened. The full README is on GitHub.