Bitcoin DNS Seed Monitor

Live · refreshes every 60s
Reachable NodesiIndividual Bitcoin node IPs where a full P2P handshake succeeded in the last hour.
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Unreachable NodesiNode IPs where TCP timed out, was refused, or the P2P handshake failed. Counted over the last hour.
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Nodes ProbediTotal unique IPs collected from all DNS seeds and actively probed this hour.
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last hour
Long-term NodesiNodes reachable in ≥80% of probe cycles over the last 7 days — stable backbone of the network.
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≥80% uptime (7d)
DNS Seeds UpiHow many of the 17 configured DNS seed hostnames resolved successfully in the last poll.
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Reachability over time (24h)

Node versions (snapshot)

Network types

Node capabilities

Version adoption (7d)

Long-term nodes — reachable in ≥80% of cycles (7 days)

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Seed health — click a row to see history

Availability measures DNS and peer access. Address quality measures the returned set: DNS / eligible is maximum DNS answer size / average eligible peers over 24h; stale is the percentage of distinct addresses returned in 7d that were never reachable; churn is new / retained / removed between the latest successful responses.

Availability & bootstrap

SeedNetworkDNS HealthReachableBootstrap DNS msLast poll

Address quality & freshness

SeedNetworkDNS / eligible UniquenessStale (7d)Churn