Reachable nodes
2,364
recent handshakes
Bitcoin peer-to-peer network research
Bitcoin Node Atlas
A public stats site for reachable Bitcoin nodes, advertised unreachable nodes, and observed addresses from a conservative crawler's vantage point.
Approximate network view |Last crawl:
Advertised unreachable nodes
17,406
observed, not reachable
Observed addresses
42,332
crawler vantage point
Reachable IPv4 nodes
2,364
clearnet | observed 33,883
Reachable IPv6 nodes
0
clearnet handshakes
Observed IPv6 addresses
8,449
advertised or checked | advertised unreachable 0
Reachable Tor nodes
0
not mapped | observed 0
Last crawl time
latest local data
Approximate geographic distribution
View aggregate map points for observed nodes with optional IP geolocation. Coordinates are approximate and may be blank until GeoIP enrichment is configured.
Methodology
Three metrics, conservative by design
Reachable nodes
Addresses that completed a recent Bitcoin P2P version/verack handshake with this crawler.
Advertised unreachable nodes
Addresses observed from peer advertisements that were not reachable from this crawler when checked.
Observed addresses
Addresses learned from DNS seeds, peer advertisements, or future crawl sources. This is not the same as reachable node count.
Observed IPv6 addresses
IPv6 addresses may appear after discovery before any are confirmed reachable. Reachable counts only include nodes this crawler successfully handshook with.
Crawler ethics
Low-volume checks from one vantage point
The crawler uses bounded timeouts and low concurrency, and it only checks standard Bitcoin peer reachability. Results depend on routing, firewalls, peer limits, and temporary network conditions, so the Atlas estimates the observed public network without treating the estimate as exhaustive.