"Information about C4 diagrams" matching MCP connectors:

Calculates IPv4 subnet information from an IP address and CIDR prefix or dotted decimal subnet mask

Query WHOIS/RDAP information for domains, IP addresses, CIDR prefixes and ASNs. Self-hostable.

CF-IPCountry ISO2, value discarded

CF-Visitor scheme token, value discarded

Expect-CT max-age band, value discarded

CF-Ray id hex shape, value discarded

True-Client-IP shape, value discarded

CF-Connecting-IP shape, value discarded

The internet's largest queryable infrastructure graph — 7.39 billion nodes, 39 billion edges, 5.6 million threat-intelligence relationships. Pivot from any IP, domain, or ASN across DNS, BGP, WHOIS, GeoIP, and threat intel in a single Cypher query. Most threat-intel and OSINT APIs are point lookups: you ask about one indicator, you get one record. Investigations don't work that way — you start from one suspicious domain and need to trace its hosting, its sibling domains, its registrar, its email