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Welcome to PublicNTP

PublicNTP provides unrestricted access to no-cost, highly-accurate time sources for the public good.

World

Servers

Seoul

Continent: Asia

Country: KR

Live Date:

2018-05-06

Hostname (IPv6):

stratum2-01.icn01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Miami, Florida

Continent: North America

Country: US

Live Date:

2016-07-30

Hostname:

stratum2-01.mia01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Dallas / Ft. Worth

Continent: North America

Country: US

Live Date:

2016-07-30

Hostname:

stratum2-01.dfw01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Santiago

Continent: South America

Country: Chile

Live Date:

2016-07-30

Hostname:

stratum2-01.scl01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Hong Kong

Continent: Asia

Country: Hong Kong

Live Date:

2016-07-30

Hostname:

stratum2-01.hkg01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Bogota

Continent: South America

Country: Colombia

Live Date:

2017-11-01
2018-02-15

Hostname:

stratum2-01.bog01.publicntp.org
stratum2-01.bog02.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Tokyo

Continent: Asia

Country: Japan

Live Date:

2017-11-07

Hostname:

stratum2-01.hnd01.publicntp.org
stratum2-01.hnd02.publicntp.org
stratum2-02.hnd02.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

San Francisco, California

Continent: North America

Country: US

Live Date:

2016-07-31

Hostname:

stratum2-01.sfo01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Salt Lake City, Utah

Continent: North America

Country: US

Live Date:

2016-12-30

Hostname:

stratum1.slc01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Chicago, Illinois

Continent: North America

Country: US

Live Date:

2008-02-13

Hostname:

stratum2.ord2.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Ashburn, Virginia

Continent: North America

Country: US

Live Date:

2016-07-30

Hostname:

stratum2.iad01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Montreal, Québec

Continent: North America

Country: Canada

Live Date:

2016-12-20

Hostname:

stratum2.yul01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

São Paulo

Continent: South America

Country: Brazil

Live Date:

2016-08-03
2016-12-28
2018-02-10

Hostname:

stratum2.gru01.publicntp.org
stratum2-01.gru02.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Sao Paulo

Continent: South America

Country: Brazil

Live Date:

2018-02-15

Hostname:

stratum2-01.gru02.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Dublin

Continent: Europe

Country: Ireland

Live Date:

2016-07-31

Hostname:

stratum2.dub01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Frankfurt

Continent: Europe

Country: Germany

Live Date:

2016-07-31

Hostname:

stratum2.fra01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Mumbai

Continent: Asia

Country: India

Live Date:

2016-08-01

Hostname:

stratum2.bom01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Bangalore

Continent: Asia

Country: India

Live Date:

2017-01-09

Hostname (IPv6):

stratum2-01.blr01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Singapore

Continent: Asia

Country: Singapore

Live Date:

2016-08-03
2017-02-26

Hostname:

stratum2.sin01.publicntp.org
stratum2-01.sin02.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Sydney

Continent: Oceania

Country: Australia

Live Date:

2016-07-31

Hostname:

stratum2-01.syd01.publicntp.org
stratum2-01.syd02.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

Buenos Aires

Continent: South America

Country: Argentina

Live Date:

2018-02-15

Hostname:

stratum2-01.eze01.publicntp.org

Software:

NTP Reference Implementation,
Network Time Foundation

PublicNTP Experience

PublicNTP Open Architecture Stratum One Server Part 2: Rationale

Ancient Map GPS180PEX Deep Sea Diver Deep Sea Diver 2

As posted in PublicNTP’s previous blog article, our team has spent many hours and meetings over the past months identifying the advantages and disadvantages of our own open architecture. We’ve looked hard at utilizing tried and true NTP servers in tandem with our own established network of stratum two and, more recently, stratum one servers.

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