---
id: "label"
kind: "glossary-term"
title: "label"
language: "en"
category: "DNS and technical foundations"
updated: "2026-10-04T14:01:23Z"
canonical: "https://tldlog.com/glossary/label/"
translations:
  es: "https://tldlog.com/es/glosario/etiqueta/"
  de: "https://tldlog.com/de/glossar/label/"
  fr: "https://tldlog.com/fr/glossaire/etiquette/"
  it: "https://tldlog.com/it/glossario/etichetta/"
  pt-BR: "https://tldlog.com/pt/glossario/rotulo/"
  ru: "https://tldlog.com/ru/glossariy/metka/"
  zh-Hans: "https://tldlog.com/zh/cihui/biaoqian/"
---

# label

One part of a domain name, the text between two dots. In www.example.com the labels are www, example and com. A label can be up to 63 characters long. Rules about allowed characters, reserved names and IDNs are all written in terms of labels.

## related terms

- [domain name](https://tldlog.com/glossary/domain-name/)
- [LDH](https://tldlog.com/glossary/ldh/)
- [A-label](https://tldlog.com/glossary/a-label/)
- [U-label](https://tldlog.com/glossary/u-label/)
- [FQDN](https://tldlog.com/glossary/fqdn/)