Network & Web · In-Browser Regular Expression Lab

MAC Address Regex — Colon and Hyphen Hardware Addresses

Matches 6-byte IEEE 802 Media Access Control (MAC) hardware addresses with colons or hyphens.

Pattern:

Regular Expression Pattern & Flags

Flags:

//none

Live Test String

Match Found

Load Sample:

Match Inspection & Details1 match

Match #1:00:1A:2B:3C:4D:5E

Test Samples Verification Matrix

Expected Valid Samples (Should Match)

00:1A:2B:3C:4D:5E Pass

a1-b2-c3-d4-e5-f6 Pass

FF:FF:FF:FF:FF:FF Pass

Expected Invalid Samples (Must Reject)

00:1A:2B:3C:4D Rejected (Pass)

00:1A:2B:3C:4D:5E:6F Rejected (Pass)

00:1Z:2B:3C:4D:5E Rejected (Pass)

Code Implementation Generator

// JavaScript / TypeScript (ES6+)
const pattern = /^(?:[0-9A-Fa-f]{2}[:-]){5}(?:[0-9A-Fa-f]{2})$/;
const text = "00:1A:2B:3C:4D:5E";

const isMatch = pattern.test(text);
console.log("Is Match:", isMatch);

if (isMatch) {
  const matches = text.match(pattern);
  console.log("Matches:", matches);
}

Regular Expression Token Breakdown

Validates six pairs of hexadecimal characters separated by colons or hyphens. Each component of the regular expression serves a distinct syntactical purpose as mapped below: