NTP Pool Project

What NTP Pool Project does

The NTP Pool Project operates a free, volunteer-run virtual cluster of NTP (Network Time Protocol) time servers accessible globally via the domain pool.ntp.org and regional or country-specific subdomains (e.g., europe.pool.ntp.org, ch.pool.ntp.org). Founded in March 2003 and maintained since July 2005 by Ask Bjørn Hansen under Develooper LLC, the service uses GeoIP-based DNS resolution (powered by MaxMind data) to route clients to geographically appropriate servers among thousands of volunteer-operated NTP servers. As of July 2026, the pool comprised 5,346 active servers across Africa (119), Asia (571), Europe (3,750), North America (1,269), Oceania (234), and South America (103), managed by approximately 2,000 volunteer operators running roughly 3,000 IPv4 and 1,600 IPv6 NTP IPs. The pool is the default time server for most major Linux distributions (including Debian since March 2004) and many networked appliances, with the project itself claiming usage by hundreds of millions of systems worldwide.

The technical architecture pairs the GeoIP-routed DNS layer with a distributed monitoring system (currently v4, launched July 2025) that scores servers via a recent-median algorithm across globally deployed probes and re-evaluates server assignments every 20 minutes. Central hub infrastructure is hosted by Equinix and Netactuate, with the project migrating away from Equinix Metal to two smaller distributed clusters in 2026 following Equinix's announced sunsetting. The business model is non-commercial: the service is free for end-users and open-source projects, commercial vendors are asked to contribute based on usage, and there are no paid tiers, contracts, or monetization mechanisms beyond voluntary donations to cover operating costs.

Name

NTP Pool Project

Legal name

Develooper LLC

Website

https://ntppool.org

Company type

Private

Founded year

2003

Operating status

Operating

Short description

The NTP Pool Project is a volunteer-run utility operating a globally distributed virtual cluster of NTP time servers via pool.ntp.org. It provides free time synchronization to hundreds of millions of systems and is the default time server for major Linux distributions.

Ownership category

akta.pro rank

Product category

Public NTP Time Synchronization Service

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518)

SIC

Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Time Servers (NTP/PTP Hybrid) (HDAFAKAD)

akta.pro secondary industry

PTP/NTP Network Components & Appliances (Time-Aware Switches/Time-Stamping NICs) (HDAFAKAK)

Keywords

• Public NTP time servers
• Time synchronization infrastructure
• Volunteer NTP pool
• GeoIP DNS routing
• Open-source time service

GTM type

B2B

Offering type

Software

Cost components

Infrastructure, Technology or R&D, Operations, Personnel

Revenue model

1. Donations and contributions: Free service provided by volunteers. Commercial vendors are asked to pay a small fee based on usage to cover operating costs. Open source projects are asked to reference the pool in documentation.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

The NTP Pool Project operates a free, volunteer-run virtual cluster of NTP (Network Time Protocol) time servers accessible globally via DNS (pool.ntp.org and regional variants). It load-balances time synchronization traffic across thousands of volunteer-operated NTP servers using GeoIP-based geographic DNS routing, providing reliable time service to millions of client systems. The project also offers dedicated vendor zones, a server management portal, a distributed monitoring/scoring system, and a public status page.

Product overview

The NTP Pool Project operates a single unified product: a virtual cluster of NTP (Network Time Protocol) time servers accessible via the domain pool.ntp.org and regional subdomains (e.g., 0.pool.ntp.org, europe.pool.ntp.org). The service uses GeoDNS to route clients to geographically appropriate volunteer-run NTP servers. The project also provides a web-based server management portal (manage.ntppool.org), a public status page (status.ntppool.org), a server scoring web frontend (scores.ntppool.org), and a multi-version monitoring system (v2 and v4) to assess server performance and reliability. Vendor-specific DNS zones (e.g., 0.vendor.pool.ntp.org) are offered to commercial and open-source software vendors for use as default time servers in their products. The project does not sell tiered modules but rather operates as a free, volunteer-run public utility with optional vendor contribution arrangements.

Differentiator

Problem solved

Functional benefit

Products and services

• pool.ntp.org Public NTP Pool
• Regional and Country DNS Zones
• Vendor DNS Zones Custom DNS hostnames (e.g., 0.vendor.pool.ntp.org) assigned to commercial and open-source vendors for use as default NTP servers in their products, allowing the project to manage traffic distribution and scoring per vendor client base.
• Server Management Portal (manage.ntppool.org) A web-based portal for NTP server operators to register, configure, and monitor their servers in the pool, including account management and server performance scoring.
• System Status Page An Atlassian Statuspage-powered uptime and incident monitoring page showing the operational status of the management portal, public website, DNS updates, GeoDNS servers, global NTP service, and monitoring system.

Quantifiable outcome

• Serves hundreds of millions of client systems worldwide
• +2 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature4 records

Partnerships

Six partnerships are on record, tiered critical, core and minor.

• EquinixcriticalOthersEquinix (formerly Packet) provides hosting and bandwidth for the NTP Pool's central infrastructure hub servers. The relationship began when Packet helped during an emergency migration in 2019, and Equinix continued the same level of support after acquiring Packet. Equinix Metal hosted the central infrastructure for almost seven years before the project began migrating to two smaller globally distributed clusters in 2026.
• NetactuatecoreOthersNetactuate provides hosting and bandwidth for the NTP Pool's hub servers, complementing Equinix infrastructure. Announced in August 2019 as part of the infrastructure diversification strategy.
• MaxMindcoreTechnology or IntegrationMaxMind provides GeoIP data used by the NTP Pool DNS server to help route clients to geographically appropriate NTP servers. The GeoIP database enables load distribution based on geographic proximity.
• MeinbergminorOthersMeinberg, a manufacturer of precision time server equipment, has partnered with the NTP Pool through equipment donations (e.g., PCI Express cards raffled to community) and cross-recommendations. Their time servers are recommended as premium alternatives to the NTP Pool for mission-critical applications.
• GitHub (abh/ntppool)coreTechnology or IntegrationThe source code for the NTP Pool system is publicly available on GitHub under the account 'abh/ntppool'. Related projects including the GeoDNS system (abh/geodns) and monitoring system (ntppool/monitor) are also hosted on GitHub.
• Ask Bjørn HansencriticalOthersThe primary maintainer and developer of the NTP Pool Project. Manages infrastructure, development, and community relations. Contact for vendor inquiries and project governance.

Scale indicators5 records

Recent moves5 records

Expansion highlights4 records

Emerging players

• EndRun Technologies: EndRun produces commercial Stratum 1 NTP/PTP time servers aimed at enterprise, telecom, and broadcast customers. It is comparable to NTP Pool as a provider of time-synchronization infrastructure, but focuses on dedicated hardware appliances for customers who require SLAs and higher accuracy than a volunteer pool can guarantee.
• Galleon Systems: Galleon Systems supplies commercial NTP and PTP time servers with a focus on enterprise, broadcast, and defense customers. Like the NTP Pool, its core offering is NTP time synchronization, but it delivers that capability as a managed, purchased appliance rather than a free community service.
• Meinberg: Meinberg manufactures precision NTP/PTP time servers and GPS synchronization hardware and is an NTP Pool partner that donates equipment and cross-recommends its commercial products as premium alternatives. It competes with NTP Pool at the high-accuracy, mission-critical end of the market.

Direct peers

• NIST Internet Time Service: U.S. NIST operates public Stratum 1 NTP servers (time.nist.gov) that have historically served as default time sources for operating systems and networked devices. Like NTP Pool, it provides free, authoritative time synchronization to a very large number of systems and is commonly listed as an alternative to pool.ntp.org.
• Google Public NTP: Google's free public NTP service (time.google.com) is a direct peer to the NTP Pool, providing a globally distributed, SLA-backed alternative that many consumer devices and operating systems also point to by default. Both compete for the same use case of providing free, reliable NTP to millions of clients worldwide.
• Cloudflare: Cloudflare operates a public NTP service (time.cloudflare.com) leveraging its global anycast network. It competes directly with NTP Pool for free, high-availability time synchronization and reaches similar audiences of developers, system administrators, and consumer devices.

Broad incumbents

• Microchip Technology (Symmetricom / Spectracom): Microchip, through its Symmetricom/Spectracom line, is one of the largest commercial suppliers of NTP/PTP time servers and atomic clock references. It competes with the NTP Pool in the carrier, financial, and defense markets, offering higher-accuracy, hardware-based alternatives.
• Amazon Web Services (AWS Time Sync Service): AWS provides a built-in, high-availability NTP service (169.254.169.123) to EC2 instances as part of its broader cloud platform. While targeted at AWS customers rather than the open internet, it serves the same time-synchronization need for a large, growing enterprise base and is a natural substitute for NTP Pool inside cloud workloads.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/ntppool
• GitHubgithub.com/abh/ntppool

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about NTP Pool Project