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NTP Servers

Xerobi provides free NTP (Network Time Protocol) and Roughtime servers to help you synchronize your systems’ clocks accurately and securely.

NTP Server

Our NTP server provides reliable time synchronization for your applications and systems.

Server Details

  • Hostname: time.xerobi.com
  • Protocol: NTP (Network Time Protocol)
  • Port: 123 (default NTP port)
  • Stratum: 2
  • Location: Global (multiple geographic locations)

Usage Examples

Linux/Unix Systems

Configure NTP client to use our server:

Windows

Configure Windows Time service:

Programming Languages

Python:
Node.js:

Roughtime Server

Roughtime is a secure time synchronization protocol designed to be robust against network attackers. We also provide access to Cloudflare’s Roughtime server.

Server Details

  • Hostname: roughtime.hixbe.com
  • Protocol: Roughtime
  • Port: 2002
  • Provider: Cloudflare

Usage Examples

Go:
Python (using roughtime library):

Best Practices

NTP Best Practices

  1. Use Multiple Servers: Configure multiple NTP servers for redundancy
  2. Monitor Time Synchronization: Regularly check that your systems are properly synchronized
  3. Use Authentication: When possible, use authenticated NTP (NTPv4 with autokey)
  4. Firewall Configuration: Ensure UDP port 123 is open for NTP traffic

Roughtime Best Practices

  1. Use for Security-Critical Applications: Roughtime provides cryptographic security guarantees
  2. Combine with NTP: Use Roughtime for security and NTP for precision
  3. Verify Certificates: Always verify server certificates when available

Monitoring

You can monitor the health of our NTP servers:
  • NTP Pool Status: Check https://www.ntppool.org/scores/time.xerobi.com
  • Server Statistics: Available at https://time.xerobi.com/stats

Support

If you encounter any issues with our time servers:
  • Email: [email protected]
  • Documentation: Check our FAQ
  • Status Page: Visit https://status.hixbe.com for real-time server status

Terms of Service

  • Free Usage: These services are provided free of charge
  • Fair Usage: Please respect reasonable usage limits
  • No SLA: While we strive for high availability, no service level agreement is provided
  • No Warranty: Services are provided “as is” without warranty

NTP Pool Project

Learn more about NTP and join the NTP Pool

Roughtime Specification

Technical details about the Roughtime protocol