Three production mirrors on rotation, refreshed on every prober cycle. The home page has the full table with copy buttons.
Nexus publishes three mirrors. The Headline mirror takes most of the buyer traffic and is the recommended default. Backup A is the recommended mirror for vendors during high-volume settlement windows. Backup B is the explicit failover on lower-throughput guard relays.
Nexus has run the same three-mirror shape since the platform launched; the rotation cadence has tightened over time as the operator moved from a 24-hour to a roughly 12-hour cadence. The directory does not republish addresses that fail the prober, so the table you see on the Nexus Market profile page is the operationally current set.
