tech.dc5.whois/dc5-whois

up checked 2026-11-11T13:38:27.305Z

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Publisher-provided title

DC5 WHOIS

Publisher-provided description

WHOIS, RDAP, DNS, IP / ASN / CIDR and Web3 name (ENS, Unstoppable, Handshake) lookups. No API key.

Summary by lookupd

Look up WHOIS, RDAP, DNS, IP/ASN/CIDR and Web3 name records, plus email auth grading, RPKI route checks and homograph detection.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http dc5-whois https://whois.dc5.tech/mcp

Codex, remote (streamable-http)

codex mcp add dc5-whois --url https://whois.dc5.tech/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "dc5-whois": {
      "url": "https://whois.dc5.tech/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Publisher-provided text

check_aspa_path Check an AS_PATH against the published ASPA objects (RPKI attestations of which providers a network authorises), following the verification procedure of draft-i
check_lookalike Check whether one domain or Web3 name is a visual look-alike (homograph): letters from different scripts mixed in one label, or every non-ASCII letter having a
check_mail_security Grade one domain's email authentication and list every check: SPF (single record, the 10 DNS-lookup limit across includes, the all qualifier), DMARC (policy, in
check_route Check one (prefix, origin AS) pair against the public records: RPKI route origin validation (RFC 6811), the routing registries (IRR route objects) and how many
get_tld_info Facts about one top-level domain from local datasets: whether it is delegated in the root zone, its type (country-code or infrastructure when derivable), the re
list_data_sources List the local datasets and feeds behind lookup_target (RIR delegations, IANA, Public Suffix List, cloud / CDN ranges, Tor and Private Relay, reputation lists,
lookup_many Look up up to 10 domains, IPs, CIDRs, ASNs or Web3 names in one call and get one short line per target (type, registrar and expiry, nameservers, network owner,
lookup_target Look up one domain, IP address, CIDR block, ASN (AS15169), EVM address (0x…) or Web3 name (ENS .eth, Unstoppable, SPACE ID .bnb, Handshake hns:) and get a compa

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