All servers · Cloud & networking · Build & deploy

isitdns

net.isitdns/isitdns · v2026-10-15

Measured by MCP Station

Description written by the publisher, not verified

Is it DNS? Audit a site or domain that isn't working: one call says if it resolves and why. No key.

Connect

claude mcp add --transport http isitdns https://isitdns.net/mcp

{
  "mcpServers": {
    "isitdns": {
      "url": "https://isitdns.net/mcp"
    }
  }
}

Tools as reported by the server

• check_domain
  Check a domain that is not working: whether the name resolves in public DNS, then the eleven-check audit of its zone, each row ok, warn, fail or skipped with why. DNS only, not HTTP or TLS, and not for one record: dig. Measured from the isitdns edge and its probes, never the caller's network. from m
• dig
  Dig one name and type at one board resolver, or at Cloudflare, Google, Quad9 and AdGuard side by side (resolver all): records, flags, rcode, EDE, latency. Not for a whole domain: check_domain. Asked over DoH from the isitdns edge. from moves the question to that region's probe as Do53 over UDP, and
• trace
  Trace a delegation from the root to the authority, like dig +trace: each referral and its glue, the one server that answered at each zone cut and any dial that failed, the final answer and its TTLs. Not for every server of a zone: sweep_domain. Each hop is asked with RD=0 over TCP from the isitdns e
• dnssec_chain
  Walk the DNSSEC chain from the root to one answer: DS and DNSKEY at each signed zone cut, key tags, signers, signature windows, and the first link that breaks or goes insecure. Not for one signed record: dig. Read through Cloudflare's resolver over DoH with CD=1 from the isitdns edge, and a key set
• sweep_domain
  Sweep a zone's nameservers: the same names and types asked at a sample of its authoritative addresses, reporting disagreements, lame or silent servers, serial and TTL differences, the CAA in effect, and each _acme-challenge TXT or CNAME. Not for a public resolver's answer: dig. Asked with RD=0 over
• registration
  Read a domain's registration from its registry's RDAP server: each status with what it means for resolution, the registration, expiry and change dates, the nameservers, whether the delegation is signed. Not for what DNS answers: check_domain. Read over HTTPS from the isitdns edge through IANA's RDAP

Website · JSON · Text for agents · Registry updated 2026-10-15