Nslookup MCP Server - install, status & alternatives [2026]

01 · Install Nslookup

before you install - you'll need

The README does not document required environment variables for a basic install.

Claude Code

claude mcp add nslookup-io-nslookup-mcp --transport http https://mcp.nslookup.io/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "nslookup-io-nslookup-mcp": {
      "url": "https://mcp.nslookup.io/mcp"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://mcp.nslookup.io/mcp

transport: streamable-http

endpoint alive - responded to MCP initialize · probed 2026-09-17

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions · remote - your agent's requests go to mcp.nslookup.io

endpoint auth accepted our unauthenticated MCP initialize - no credentials needed to connect

license Apache-2.0 - declared in the repository

npm package @nslookup-io/mcp-server - published under the repo owner's npm scope (@nslookup-io)

registry registry publisher io.github.venomseven is not the repo owner (nslookup-io) - the registry entry was published by someone else

03 · What Nslookup can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can read a public status page (by slug or custom domain): overall status, components, active incidents, run a DNS health audit (39 checks across DNSSEC, MX, hygiene, TTL, nameservers, CAA, operational maturity) with severity-weighted scoring, check only the BIMI DNS record (faster - skips the VMC certificate fetch), and scan a domain for security issues - SPF/DKIM/DMARC, cookie security, DNS misconfigurations.

Capability map

Tools grouped from the project's README - what Nslookup lets an agent do.

Dns

6 tools - e.g. Look up all common DNS records (A, AAAA, NS, MX, TXT, CNAME, SOA) for a domain; Look up a specific DNS record type - supports all 53 types (HTTPS, DNSKEY, TLSA, SPF, etc.); Check DNS propagation across…

dns_lookup · dns_record · dns_propagation · dns_change_review · dns_health · my_dns_changes

Uptime

3 tools - e.g. One-time HTTP uptime check - status, response time, HTTP status code; Check if a site is up from 7 global locations - Amsterdam, Sydney, London, Frankfurt, Delhi, Warsaw, South Carolina; Uptime +…

uptime_check · uptime_check_multi · my_uptime_history

Bimi

2 tools - e.g. Check BIMI record and VMC (Verified Mark Certificate) - logo URL, trademark info, certificate expiry; Check only the BIMI DNS record (faster - skips the VMC certificate fetch)

bimi_vmc · bimi_check

Webservers

1 tool - e.g. Get IPv4 and IPv6 addresses for a domain

webservers

Rdap

1 tool - e.g. Registration data (RDAP) for an IP, AS number, or domain - owner org, network range, RIR, contacts, dates

rdap_lookup

Hosting

1 tool - e.g. Who hosts a website: hosting provider, CDN/proxy, DNS provider, mail servers, server location, SSL issuer

hosting_report

Status

1 tool - e.g. Read a public status page (by slug or custom domain): overall status, components, active incidents

status_page

Ssl

1 tool - e.g. Check SSL/TLS certificate - issuer, expiry, chain validity, cipher strength, SAN domains, TLS version

ssl_certificate

04 · Who maintains Nslookup

nslookup is maintained by nslookup-io. It's the only MCP server we track from this author; the repo dates to Mar 2026.

05 · Facts

repository: github.com/nslookup-io/nslookup-mcp
category: DevOps & monitoring - ranked #57 of 120 actively-maintained DevOps & monitoring servers as of 2026-09-18.
registry: io.github.venomseven/nslookup (active, first published 2026-03-23 · 10 versions)
packages: npm:@nslookup-io/mcp-server

06 · Nslookup FAQ

Is Nslookup still maintained?

Yes - as of 2026-09-18, its last commit was 2026-07-17. We re-verify nightly.

What can Nslookup do?

With this server connected, an agent can read a public status page (by slug or custom domain): overall status, components, active incidents, run a DNS health audit (39 checks across DNSSEC, MX, hygiene, TTL, nameservers, CAA, operational maturity) with severity-weighted scoring, check only the BIMI DNS record (faster - skips the VMC certificate fetch), and scan a domain for security issues - SPF/DKIM/DMARC, cookie security, DNS misconfigurations.

How do I install Nslookup?

Run `npx -y @nslookup-io/mcp-server`. The README does not document required environment variables for a basic install. You can also paste the ready-made client config above.

Does Nslookup require authentication?

No - the endpoint accepted our unauthenticated MCP initialize when probed on 2026-09-17; you can connect without credentials.

07 · Alternatives to Nslookup

Alternatives to Nslookup

Maintained DevOps & monitoring servers if Nslookup isn't the fit.

Pairs well with

Servers that cover what Nslookup doesn't - only shown when the pairing reason fits the companion.

More DevOps & monitoring MCP servers · Health Monitor · Infra Lens MCP · GitHub Actions · Console Automation

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