Is my RTK network up?

Up means the caster answered our request with its sourcetable, the list of mount points it offers. That is the same first step your rover or data collector takes.

It does not prove that every mount point is streaming, that your login works, or that corrections reach your spot. A network can be up here and still have a single station offline. If you are stuck, try the fix troubleshooter.

No reply means this caster has never answered our checker since we started watching it. Some casters block requests from cloud servers like ours, so this does not mean it is down for you. We do not count these as down.

Down means a caster that answered before gave no sourcetable within 10 seconds, even after a second try. It can be a real outage, planned maintenance, or a network path problem between our checker and that server.

A small program on Cloudflare opens a connection to each caster every 15 minutes (never more often) and asks for “/”, the standard NTRIP sourcetable request. It reads only the start of the reply and hangs up. It never logs in and never asks for correction data.

Uptime is the share of checks in the last 7 days that got an answer. A caster we started watching recently shows uptime for the checks we have so far, and the count of checks is shown under it.

The list is every public caster address we could reach on our Oct 17, 2026 sourcetable sweep: 61 addresses from 49 networks. Networks that hide their caster address, or that need a login just to see the sourcetable, are not here. Missing a network? Tell us.