Following our migration and redesign the IP address for Pachube.com has changed to: 173.203.98.29. Any devices publishing to Pachube or retrieving from Pachube that are not able to do DNS lookups (Arduino users, we're looking at you!) will need to update their IP address configuration.
Until recently we had a transparent proxy that was forwarding all requests from the old IP address on to the new IP address however this has now been switched off. So please make the changes to your devices as soon as possible.
(Several of the examples here on the site refer to the old IP address - we'll be fixing those references as quickly as we can!).
Meanwhile, triggers and feed fetching requests (for automatic feeds) are now made from the following IP addresses: 173.203.122.15, 173.203.102.83 and 173.203.98.174 so you can update your firewalls accordingly. Note: these will change in future - we'll let you know about this.