<div class="cwikmeta">{
"title":"ADDR",
"related":["/protocol","/protocol/network/messages/getaddr"]
}</div>

# Response: Addresses ("addr")

Provide information about other prospective P2P protocol peers.  Peers SHOULD not send this message unsolicited (see [getaddr](/protocol/network/messages/getaddr)), and nodes that receive an unsolicited addr message MUST ignore it.  This behavior helps prevent eclipse and partitioning attacks by not allowing an attacker to aggressively seed peer connection tables with its own nodes.

## Message Format

| Field | Length | Format | Description |
|--|--|--|--|
| peer count | variable | [variable length integer](/protocol/formats/variable-length-integer) | The number of peers whose connection information is being sent in this message. |
| peer network addresses | `peer_count` * 30 | `peer_count` [network addresses](/protocol/formats/network-address) | The peer information for each of the peers being transmitted. |