# is-valid-domain

> Validate domain name

Latest version **0.1.6** (published 2022-02-22) · MIT license · 0 weekly downloads

## Install

```sh
npm install is-valid-domain
pnpm add is-valid-domain
yarn add is-valid-domain
bun add is-valid-domain
```

## Health

**Score 25/100 (F)** — status: abandoned.

Positive: has types; no vulnerabilities; high quality score.

Warnings: low downloads; no esm support; pre 1.0.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 0.1.6 |
| Published | 2022-02-22 |
| First published | 2015-01-04 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | CommonJS |
| Dependencies | 1 |
| Unpacked size | 112.7 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 70 |
| Author | Miguel Mota |
| Maintainers | miguelmota |
| Keywords | valid, validate, validator, check, checker, domain, subdomain, wildcard, host, hostname |

## Links

- npm: https://www.npmjs.com/package/is-valid-domain
- Repository: https://github.com/miguelmota/is-valid-domain
- Issues: https://github.com/miguelmota/is-valid-domain/issues
- npm.io page: https://npm.io/package/is-valid-domain

## Dependencies (1)

- [punycode](https://npm.io/package/punycode.md) ^2.1.1

## Alternatives

- [@regle/core](https://npm.io/package/@regle/core.md) — 47.0K weekly downloads
- [typeof-arguments](https://npm.io/package/typeof-arguments.md) — 12.5K weekly downloads
- [@lokalise/projects-engine-contracts](https://npm.io/package/@lokalise/projects-engine-contracts.md) — 978 weekly downloads
- [@osjwnpm/nam-laboriosam-quibusdam](https://npm.io/package/@osjwnpm/nam-laboriosam-quibusdam.md) — 70 weekly downloads
- [@oridune/validator](https://npm.io/package/@oridune/validator.md) — 16 weekly downloads

## Recent versions

- 0.1.6 (latest) — 2022-02-22
- 0.1.5 — 2021-11-30
- 0.1.4 — 2021-11-07
- 0.1.3 — 2021-11-07
- 0.1.2 — 2021-07-15
- 0.1.1 — 2021-07-14
- 0.1.0 — 2021-07-13
- 0.0.20 — 2021-06-08
- 0.0.19 — 2021-04-08
- 0.0.18 — 2021-04-08
- 0.0.17 — 2020-10-29
- 0.0.16 — 2020-10-16
- 0.0.15 — 2020-08-20
- 0.0.14 — 2020-02-26
- 0.0.13 — 2020-02-26
- … 11 more at https://npm.io/package/is-valid-domain/versions

## README

# is-valid-domain

> Validate domain name in JavaScript

## Demo

[https://lab.miguelmota.com/is-valid-domain](https://lab.miguelmota.com/is-valid-domain)

## Install

```bash
npm install is-valid-domain
```

## Usage

```javascript
const isValidDomain = require('is-valid-domain')

isValidDomain('example.com') // true
isValidDomain('foo.example.com') // true
isValidDomain('bar.foo.example.com') // true
isValidDomain('exa-mple.co.uk') // true
isValidDomain('xn--80ak6aa92e.com') // true
isValidDomain('_dnslink.ipfs.io') // true
isValidDomain('exa_mple.com') // false
isValidDomain('-example.co.uk') // false
isValidDomain('example') // false
isValidDomain('ex*mple.com') // false
isValidDomain('*.example.com') // false
isValidDomain('*.com') // false
isValidDomain(3434) // false

isValidDomain('foo.example.com', {subdomain: true}) // true
isValidDomain('foo.example.com', {subdomain: false}) // false
isValidDomain('*.example.com', {wildcard: false}) // false
isValidDomain('*.example.com', {wildcard: true}) // true
isValidDomain('*.example.com', {subdomain: false, wildcard: true}) // false
isValidDomain('はじめよう.みんな') // false
isValidDomain('はじめよう.みんな', {allowUnicode: true}) // true
isValidDomain('ai.') // false
isValidDomain('ai.', {topLevel: true}) // true
```

view more [examples](./test/domain.test.js)

## Test

```bash
npm test
```

## Contributing

Adding new domains:

- Add second level domain to `data/second_level_domains.csv`
- Run `npm run generate` to generate JSON map file
- Run `npm test`

## FAQ

- Q: Why is trailing dot `.` in domain names verified as `true`?

  - A: Fully qualified domain names allow the trailing dot which represents the root zone. More info [here](http://www.dns-sd.org/trailingdotsindomainnames.html) and [here](https://en.wikipedia.org/wiki/Fully_qualified_domain_name).

## License

[MIT](LICENSE)

---
_Source: https://npm.io/package/is-valid-domain · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._