geo_checker
Check a domain's GEO (Generative Engine Optimization) score — AI crawler access, structured data, entity signals, content extractability, and prioritized recommendations
How to use it
geo_checker is exposed by the Nslookup MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the geo_checker tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
Install Nslookup MCP
claude mcp add --transport http nslookup https://mcp.nslookup.io/mcpOther tools in Nslookup MCP (22)
Check only the BIMI DNS record (faster — skips the VMC certificate fetch)
Check BIMI record and VMC (Verified Mark Certificate) — logo URL, trademark info, certificate expiry
Review proposed DNS changes before applying them: diff vs current DNS, rule-based findings with fixes, and a 0–100 risk score
Run a DNS health audit (39 checks across DNSSEC, MX, hygiene, TTL, nameservers, CAA, operational maturity) with severity-weighted scoring
Look up all common DNS records (A, AAAA, NS, MX, TXT, CNAME, SOA) for a domain
Check DNS propagation across 18+ global servers (Cloudflare, Google, Quad9, regional, authoritative)
Look up a specific DNS record type — supports all 53 types (HTTPS, DNSKEY, TLSA, SPF, etc.)
Scan a domain's email security posture (SPF, DKIM, DMARC, BIMI) with per-indicator scores
Who hosts a website: hosting provider, CDN/proxy, DNS provider, mail servers, server location, SSL issuer
SSL certificate expiry overview — alert-level counts and certificates sorted by soonest expiry
Recent DNS changes on your monitored domains with their risk reviews (0–100 score, severity counts)
Open (or all recent) incidents across all monitoring types, with a per-status/per-source summary
List all your monitors across every type (uptime, API, DNS, WHOIS, propagation, certificates, VMC)
Account health snapshot — aggregated 0–100 score with per-subsystem breakdown, plus your limits/quota
Uptime + response-time history for one monitor (by id or URL) over a configurable window
Registration data (RDAP) for an IP, AS number, or domain — owner org, network range, RIR, contacts, dates
Scan a domain for security issues — SPF/DKIM/DMARC, cookie security, DNS misconfigurations
Check SSL/TLS certificate — issuer, expiry, chain validity, cipher strength, SAN domains, TLS version
Read a public status page (by slug or custom domain): overall status, components, active incidents
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
Get IPv4 and IPv6 addresses for a domain