whois_as
Looksup whois information about the Autonomous System Number (ASN)
LABSCO SUMMARY
The browser tab you would have opened to check a registration disappears.
Four lookups cover the chain from a top-level domain down to a single address, and the ASN lookup turns an IP in a log into the network that announces it. It is a small surface on purpose: nothing to authorise, nothing to configure, and the answers are the registry's own records.
What it is
Four WHOIS lookups: a domain name, a top-level domain, an IP address, and an autonomous system number.
What you get
- WHOIS records for a domain name
- WHOIS records for a top-level domain
- WHOIS records for an IP address
- WHOIS records for an autonomous system number
Requirements
npx on your PATH. No account, no key.
Setup effort
One command — npx -y @bharathvaj/whois-mcp@latest
USE CASES
01
Checking whether a domain is taken
The domain lookup answers whether it is registered and by whom, and the TLD lookup covers the registry behind the extension when the question is about a suffix rather than a name.
02
Identifying the network behind an address in a log
An IP lookup gives the registration for the address itself; the ASN lookup names the autonomous system that announces it, which is the level at which "who is this traffic" is usually answerable.
4 tools
Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.
whois_domain
Looksup whois information about the domain
whois_ip
Looksup whois information about the IP
whois_tld
Looksup whois information about the Top Level Domain (TLD)
BEFORE YOU INSTALL
What to know first
Tools you get
4 tools when we connected.
Requires
npx on PATH
CONTEXT COST
Light Standing cost
Rated by the size of the 4 tool definitions that ride along on every turn, not by how many there are
INSTALLATION
Connect your client
Add the block to your client, or run the command directly.
Server setup
Configuration file
JSON
{
"mcpServers": {
"whois-mcp": {
"command": "npx",
"args": [
"-y",
"@bharathvaj/whois-mcp@latest"
]
}
}
}npx
TERMINAL
npx -y @bharathvaj/whois-mcp@latest
