IPv4 Broadcast / All-Zeros Detection Regex for Python

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 Python. A rigorously tested regex reduces debugging time and protects your application from edge-case failures. The snippet below is ready to drop into your Python project — whether you're validating in a Django view, a FastAPI endpoint, or a standalone data processing script.

Python Implementation

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

import re

ipv4_broadcast_allzeros_detection_pattern = re.compile(r'^(?:0\.0\.0\.0|255\.255\.255\.255)$')

def validate_ipv4_broadcast_allzeros_detection(value: str) -> bool:
    return bool(ipv4_broadcast_allzeros_detection_pattern.fullmatch(value))

# Example
print(validate_ipv4_broadcast_allzeros_detection("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 Python developers because particularly important in Python web servers where CPU-bound regex operations can stall concurrent request handling. 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.