# Parsing common IPv4 addresses in C# with AVX-512

DevFeed: [Parsing common IPv4 addresses in C# with AVX-512](<https://devfeed.tech/articles/parsing-ip-addresses-in-c-at-crazy-speeds-29423.md>)

Original publisher: [Read original article](<https://lemire.me/blog/2026/08/19/parsing-ip-addresses-in-c-at-crazy-speeds/>)

Author: Daniel Lemire

Published: 2026-08-19T19:07:48Z

Content type: article

Language: en

Sources: [Daniel Lemire](<https://devfeed.tech/sources/daniel-lemire.md>)

Topics: [C#](<https://devfeed.tech/topics/csharp.md>), [Parsing](<https://devfeed.tech/topics/parsing.md>), [performance-optimization](<https://devfeed.tech/topics/performance-optimization.md>), [.NET](<https://devfeed.tech/topics/net.md>)

Tags: [avx](<https://devfeed.tech/tags/avx.md>), [c-sharp](<https://devfeed.tech/tags/c-sharp.md>), [ip](<https://devfeed.tech/tags/ip.md>), [ipv4](<https://devfeed.tech/tags/ipv4.md>), [parsing](<https://devfeed.tech/tags/parsing.md>), [performance](<https://devfeed.tech/tags/performance.md>)

## AI overview

The article examines parsing common IPv4 address strings in C# for performance. It discusses using SIMD and AVX-512 support in .NET 10, including masked loads for safely loading strings shorter than a SIMD register width.

## Source excerpt

We are all familiar with IP addresses such as 192.168.0.1. They are typically written as four numbers in the range 0 to 255 inclusive, separated by dots. In C#, you can parse them with the standard library using IPAddress.TryParse. Pedantic people are quick to point out that IP addresses can take different forms: they can ... Continue reading Parsing IP addresses in C# at crazy speeds