Just for fun I started gathering IPs reported by bitcoin clients and make a database of unique ips and test which ones are live, which ones are not.

Since there are ~1200 bitcoin connected to the irc channel I was assuming to find a similar value, but right now I'm still querying nodes and got over 6000 nodes (for now about 25% are accepting inbound connections).

Anyway since it's probably not telling you much, I transformed the ips in coordinates, and made a google kml file anyone can see in google maps (suggested by slush_cz)

http://maps.google.com/maps?q=https://smsz.net/btcStats/bitcoin.kml

UPDATE: Now the node color on google maps tells you if that node accept connections or not.

• GREEN means the node has its firewall correctly configured and accept connections from other nodes
• RED means we were unable to connect to the node (it is either down, or do not accept connections)
• WHITE means the node is still in the queue, and will be checked soon

UPDATE 2: Now only nodes I heared about from other nodes within the last 3 hours are taken into account. The other nodes are excluded from the map and other stats (except versions)

You can also have a (json) overview of bitcoin versions across the network: https://smsz.net/btcStats/version (yep, still some 0.3.0 around)


PS: another json feed: https://smsz.net/btcStats/accepting ("up" nodes are node accepting connections from outside, "rate_accepting" is the current ratio between nodes accepting and not accepting connections)