---
description: Connect to Cloudflare's Roughtime server.
title: Get the Roughtime
image: https://developers.cloudflare.com/og-docs.png
---

[Skip to content](#main-content)

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/time-services/llms.txt  
> Use this file to discover all available pages before exploring further.

# Get the Roughtime

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/time-services/roughtime/usage/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

The "Hello, world!" of Roughtime is very simple: the client sends a request over UDP to the server and the server responds with a signed timestamp.

You just need the server's address and public key to run the protocol:

* **Server address**: `roughtime.cloudflare.com:2003` (resolves to an IP address in our [anycast IP range ↗](https://www.cloudflare.com/learning/cdn/glossary/anycast-network/)). You can use either IPv4 or IPv6.
* **Public key**: `0GD7c3yP8xEc4Zl2zeuN2SlLvDVVocjsPSL8/Rl/7zg=`

To get started, download and run Cloudflare's [Go client ↗](https://github.com/cloudflare/roughtime):

```go
go install github.com/cloudflare/roughtime/cmd/getroughtime@latest
getroughtime -ping roughtime.cloudflare.com:2003 -pubkey 0GD7c3yP8xEc4Zl2zeuN2SlLvDVVocjsPSL8/Rl/7zg=
```

## Beta notice

Cloudflare Roughtime is currently in beta. As such, our root public key may change in the future. We will keep this page up-to-date with the most current public key.

You can also obtain it programmatically using DNS. For example:

```sh
dig TXT roughtime.cloudflare.com | grep -oP 'TXT\s"\K.*?(?=")'
```

## Next steps

Beyond just getting the Roughtime from Cloudflare, you may want to use it to [keep your clock in sync](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/time-services/roughtime/recipes/).

Was this helpful?

YesNo

## On this page

[![](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/_astro/logo.te5VL_aD.svg)Docs](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/)

```json
{"@context":"https://schema.org","@type":"TechArticle","@id":"https://developers.cloudflare.com/time-services/roughtime/usage/#page","headline":"Get the Roughtime from Cloudflare · Cloudflare Time Services docs","description":"Connect to Cloudflare's Roughtime server.","url":"https://developers.cloudflare.com/time-services/roughtime/usage/","inLanguage":"en","image":"https://developers.cloudflare.com/og-docs.png","dateModified":"2026-08-24","publisher":{"@type":"Organization","name":"Cloudflare","description":"One platform for your apps, agents, and workforce. Build, secure, and scale without managing infrastructure","url":"https://www.cloudflare.com/","sameAs":["https://github.com/cloudflare","https://www.linkedin.com/company/cloudflare","https://x.com/cloudflare"],"logo":{"@type":"ImageObject","url":"https://developers.cloudflare.com/logo.svg"},"address":{"@type":"PostalAddress","streetAddress":"101 Townsend St","addressLocality":"San Francisco","addressRegion":"CA","postalCode":"94107","addressCountry":"US"},"contactPoint":[{"@type":"ContactPoint","contactType":"Customer Support","url":"https://support.cloudflare.com/","availableLanguage":["English"]},{"@type":"ContactPoint","contactType":"Sales","url":"https://www.cloudflare.com/contact/","availableLanguage":["English"]}]},"isPartOf":{"@type":"WebSite","@id":"https://developers.cloudflare.com/#website","name":"Cloudflare Docs","url":"https://developers.cloudflare.com/"}}
```