IPv4 Broadcast / All-Zeros Detection Regex for JavaScript

What this pattern does

This page provides a well-structured, multi-part regular expression for matching ipv4 broadcast / all-zeros detection, ported and verified for JavaScript. A rigorously tested regex reduces debugging time and protects your application from edge-case failures. The snippet below is ready to drop into your JavaScript project — whether you're validating in an Express middleware, a Next.js API route, or a client-side form.

Javascript Implementation

// IPv4 Broadcast / All-Zeros Detection
// ReDoS-safe | RegexVault — Web & Network > IPv4

const ipv4BroadcastAllzerosDetectionRegex = /^(?:0\.0\.0\.0|255\.255\.255\.255)$/;

function validateIpv4BroadcastAllzerosDetection(input: string): boolean {
  return ipv4BroadcastAllzerosDetectionRegex.test(input);
}

// Example
console.log(validateIpv4BroadcastAllzerosDetection("0.0.0.0")); // true

Test Cases

When to use this pattern

This pattern is drawn from the Web & Network > IPv4 category and carries a ReDoS-safe certification. That matters for JavaScript developers because especially critical in long-running Node.js event loops where a ReDoS vulnerability can block the entire process. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

Used to detect uninitialized (0.0.0.0) or limited broadcast (255.255.255.255) addresses. Useful as a pre-validation block before accepting user-submitted IPs.