# Parsing IPv6 Addresses with AVX-512

DevFeed: [Parsing IPv6 Addresses with AVX-512](<https://devfeed.tech/articles/parsing-ipv6-addresses-crazily-fast-with-avx-512-29408.md>)

Original publisher: [Read original article](<https://lemire.me/blog/2026/05/23/parsing-ipv6-addresses-crazily-fast-with-avx-512/>)

Author: Daniel Lemire

Published: 2026-05-23T02:45:11Z

Content type: article

Language: en

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

Topics: [Parsing](<https://devfeed.tech/topics/parsing.md>), [Benchmark](<https://devfeed.tech/topics/benchmark.md>), [Internet](<https://devfeed.tech/topics/internet.md>)

Tags: [amd](<https://devfeed.tech/tags/amd.md>), [avx](<https://devfeed.tech/tags/avx.md>), [benchmark](<https://devfeed.tech/tags/benchmark.md>), [intel](<https://devfeed.tech/tags/intel.md>), [internet](<https://devfeed.tech/tags/internet.md>), [ipv6](<https://devfeed.tech/tags/ipv6.md>), [parsing](<https://devfeed.tech/tags/parsing.md>)

## AI overview

This article explains how an AVX-512 implementation parses IPv6 addresses using SIMD operations. The approach loads the input into a 512-bit register, identifies colons, expands bytes, translates hexadecimal digits, and combines them into bytes with few branches. It also describes a benchmark using randomly generated canonical compressed IPv6 addresses, but the supplied text does not include benchmark results.

## Source excerpt

Every machine connected to the Internet has an address called an IP address. Originally, these addresses were 32-bit integers (IPv4), giving a theoretical maximum of about four billion distinct addresses. We are all familiar with these addresses (e.g., 192.168.0.0). There was a big fuss about how we would run out of addresses. It never happened ... Continue reading Parsing IPv6 Addresses Crazily Fast with AVX-512