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This is a medium difficulty Coding & Algorithms question, commonly asked during Onsite rounds at OpenAI.

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This question is commonly asked for Software Engineer candidates at OpenAI during technical interviews.

Implement an IPv4 Iterator

Last updated: May 4, 2026

Quick Overview

This question evaluates proficiency in IPv4 address representation and arithmetic, CIDR parsing, iterator API design for forward and backward traversal, and performance-aware algorithms and data structures for range enumeration.

medium
OpenAI
Coding & Algorithms
Software Engineer

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Implement an IPv4 Iterator

OpenAI

Jan 19, 2026, 12:00 AM

mediumSoftware EngineerOnsiteCoding & Algorithms

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