An open NTRIP caster

We maintain two open SNIP® NTRIP Casters for community use. The first is at:

#1   port 2101

You do not need an account or a password to connect and use it; it is free.

Most public and private NTRIP Casters are “closed” in that you must first register with the owner/operator before your NTRIP client software can connect and get any data.  You can elect to run your copy of SNIP in either open or closed mode as well.

Contact the operator of any NTRIP Caster you wish to connect to in order to understand how to register on their network.  Some networks, or some streams within some networks, involve monetary compensation for the operators.

The caster is intended to support our user community throughout the world.  The data streams chosen represent a cross section of locations where we are developing other work.  In the caster holdings you can find baselines ranging from just over one meter to 50km and more, using both L1 and L2 and some low cost L1 only sources such as uBlox.  Both Legacy RTCM and the newer MSM message content.  You can use these data products to confirm that your copies of SNIP or RTKLIB or other GNSS tools are working as expected. For example, you can easily connect to any two nearby local reference stations in our coverage area, as well as our worldwide broadcast ephemeris stream, and perform various types of RTK navigation operations on the data sets.

Check it’s quick stats

#2  RTK2go, a public relay point:

RTK2go    (  or

We also operate a free open NTRIP Caster at which any party can use to send their data to.  Use this resource to send your Base Station data to others.  This allows those without a static IP, or if they do not want to operate their own Caster, to provide corrections to others (or themselves).  The Caster is one of a growing number of free open Caster services now on the market as the deployment of RTK style navigation grows.

Usage is free, but you must first register to send your Base in.  See the site for details.

Check the RTK2go quick stats

Your Own NTRIP Caster

Of course, your likely reason for reading this web page is to use SNIP to set up a network meeting your own needs.  Please download an evaluation copy and then see other articles in the knowledge base for details of how to go about this.  Most folks elect to run their own copy of SNIP, but if you wish our staff to manage your caster or to lease time on one of our world-wide regional deployments, just contact us.

Download your own copy of SNIP today

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  1. We would like to create RTK network here in our country, so started learning with SNIP lite version. I want to setup a service same as, password: BETATEST

    so that my service will be password: xxxxxxx

    But unfortunately I don’t have a public/static IP in our office. Our main router is configured with static IP, but my public IP ( is different when I see at

    My pc local IP is

    How can I do this ? Any help will be of great help.


    1. support

      This relates more to internet issues than NTRIP or SNIP set up. But to point you in the right direction… Your ISP (whoever provided you with can provide you with a fixed static IP as well. But they will likely charge $$ for this. That is part one, and you can tell your friends to us that IP combined with the port you place SNIP on (2101 is common). Part two is to then assign a name for it, and you will need a DNS entry (an A record) which whoever setup “” can do for you. Adding a new A records is typically free. If you do not have domain name yet (i.e. needs to be created), get one from places like (there are many domain registries). Unless you decide to place the SNIP machine on the same machine that services the web site for, you might want to call you caster node and create an A record to that.