Look up domain registration, check registry record status, fetch DNS records, and resolve IPs and ASNs over RDAP and DNS-over-HTTPS via MCP. STDIO or Streamable HTTP.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add whois -- npx -y @cyanheads/whois-mcp-server~/.codex/config.toml
[mcp_servers.whois]
command = "npx"
args = ["-y", "@cyanheads/whois-mcp-server"]
# codex mcp add whois -- npx -y @cyanheads/whois-mcp-server~/.cursor/mcp.json
{
"mcpServers": {
"whois": {
"command": "npx",
"args": [
"-y",
"@cyanheads/whois-mcp-server"
]
}
}
}.vscode/mcp.json
{
"servers": {
"whois": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@cyanheads/whois-mcp-server"
]
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"whois": {
"command": "npx",
"args": [
"-y",
"@cyanheads/whois-mcp-server"
]
}
}
}claude_desktop_config.json
{
"mcpServers": {
"whois": {
"command": "npx",
"args": [
"-y",
"@cyanheads/whois-mcp-server"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"whois": {
"command": "npx",
"args": [
"-y",
"@cyanheads/whois-mcp-server"
]
}
}
}