"Free web browsers or tools for browsing the internet" matching MCP connectors:

Signed internet telemetry, read-only: DNS, TLS, WHOIS, reachability. Every record Ed25519-signed.

DNS and email security scanner with 80 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.

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

Domain attribution and correlation for AI agents, with confidence and per-signal evidence.

Custom domains API for SaaS: connect, verify, and manage customer domains, SSL, and DNS

MCP server for DNSimple — domains, DNS zone records, availability, pricing and contacts.

Internet censorship and website reachability: OONI network measurements, keyless

Agent-native web hosting — deploy sites, manage DNS, register domains, scale infrastructure

Live internet-censorship signals: Great Firewall reachability, model-layer censorship, takedowns.

Domain intel for AI agents: RDAP registration, DNS, email deliverability, tech stack.

Internet identity for AI agents: register or broker domains, email, DNS - pay by card or USDC.

Remote MCP server: 19 domain-hygiene and email-auth tools (DNS, SPF, DMARC, DKIM, TLS).

Check email deliverability for a domain: MX, SPF, DKIM, DMARC, blacklists. Graded, no key.

Unlock the power of DNS lookups with our DNS Lookup service using Google DNS-over-HTTPS. Whether

DMCA takedown & host reveal for AI agents: who hosts an infringing URL, even behind Cloudflare.

Scan the open TCP ports of your own public IP. Fast (32) or deep (65535). No key, no signup.

Shodan MCP — wraps the full Shodan REST API (api.shodan.io)

IPInfo MCP — wraps ipinfo.io (free tier, no auth required for basic usage)

PeeringDB MCP — the peering ecosystem database.

IP Lookup MCP — ip-api.com (free, no auth for basic usage)