MCP-Server
isitdns
net.isitdns/isitdns
Was dieses MCP kann
Provides live DNS lookups, delegation tracing, resolver monitoring, outage history, DNSSEC checks, and domain configuration audits.
Funktionen
Tools
8
Tools
alias_chain
Follow a CNAME chain
Use when a name is a CNAME and the person asks where it leads. Returns each hop with its target and TTL, and how it ends: addresses, none, a resolver failure, NXDOMAIN (dangling), a loop, or an inside name.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'required': ['name'], 'properties': {'name': {'type': 'string', 'description': 'The name to follow, e.g. www.example.com. Also as "domain"; a URL is read as its host.'}}}
check_domain
Check a domain
Use when a domain or website is not working or not resolving (is it DNS?): one call. The first line says whether the name resolves; then the eleven-check audit of its zone, each row ok, warn, fail or skipped and why.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'required': ['name'], 'properties': {'from': {'enum': ['north-america', 'europe'], 'type': 'string', 'description': 'Ask from the probe in this region'}, 'name': {'type': 'string', 'description': 'The domain to audit. Also as "domain"; a URL is read as its host.'}}}
dig
dig
Use for one exact question to one public resolver, not as the first call for a site that is not working. Returns records, flags, rcode, EDE and latency; DoH from the edge, or Do53 from a region's probe (from).
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'required': ['name'], 'properties': {'cd': {'type': 'boolean', 'default': False, 'description': 'Ask the resolver not to validate'}, 'ecs': {'type': 'string', 'description': 'EDNS Client Subnet, e.g. 192.0.2.0/24'}, 'from': {'enum': ['north-america', 'europe'], 'type': 'string', 'description': 'Ask from the probe in this region'}, 'name': {'type': 'string', 'description': 'The name, e.g. _dmarc.example.com. Also as "domain"; a URL is read as its host.'}, 'nsid': {'type': 'boolean', 'default': False, 'description': 'Request NSID (RFC 5001)'}, 'type': {'type': 'string', 'default': 'A', 'description': 'Record type, e.g. A, MX, TXT, DS, HTTPS, or TYPE<n>'}, 'norec': {'type': 'boolean', 'default': False, 'description': 'Clear RD, like dig +norec'}, 'dnssec': {'type': 'boolean', 'default': True, 'description': 'Set the DO bit and read AD'}, 'family': {'enum': ['v4', 'v6', 'both'], 'type': 'string', 'default': 'v4', 'description': 'Address family to dial'}, 'resolver': {'type': 'string', 'default': 'cloudflare', 'description': 'A board resolver id (cloudflare, google, quad9, opendns, adguard, cleanbrowsing, controld, quad9-unfiltered, adguard-family, cleanbrowsing-family, adguard-unfiltered, opendns-familyshield, nextdns, cloudflare-malware, cloudflare-family, mullvad-base, dns4eu-protective), an alias such as 8.8.8.8, or all for the tier-1 operators side by side.'}}}
dnssec_chain
Walk the DNSSEC chain
Use when a name fails validation or the person asks whether its DNSSEC chain holds. Returns each signed zone cut from the root to the answer and the first link that breaks, or where it goes insecure.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'required': ['name'], 'properties': {'name': {'type': 'string', 'description': 'The name, e.g. www.example.com. Also as "domain"; a URL is read as its host.'}, 'type': {'type': 'string', 'default': 'A', 'description': 'The record type to check at the end of the chain'}}}
path_receipt
Path receipt
Use when the person wants proof of what their resolver sends. First call: one dig to run. Second, with the nonce: what we saw (resolver address, UDP/TCP, DO, CD, EDNS size, cookie, ECS, case, arrivals) and the signed TXT.
Nur Lesen
Externer Zugriff
Eingabeschema
{'type': 'object', 'properties': {'nonce': {'type': 'string', 'description': 'From the first call'}}}
registration
Registration status (RDAP)
Use when a domain has vanished from DNS and the person asks whether it expired or is on hold. Returns the registry's RDAP statuses and what each means for resolution, the dates and its nameservers; no contacts.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'required': ['domain'], 'properties': {'domain': {'type': 'string', 'description': 'The domain or a hostname under it. Also as "name"; a URL is read as its host.'}}}
sweep_domain
Sweep a domain across its authoritative servers
Use after a zone change, when the person asks whether the authoritative servers agree. Returns each nameserver's answer to each name and type you list, the disagreements, lame or silent servers, and CAA and ACME readiness.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'required': ['domain'], 'properties': {'names': {'type': 'array', 'items': {'type': 'string'}, 'description': 'Relative labels to ask, "@" for the apex. Default: @, www, _dmarc, _acme-challenge'}, 'types': {'type': 'array', 'items': {'type': 'string'}, 'description': 'Record types. Default: SOA, NS, A, AAAA, MX, TXT, CAA'}, 'domain': {'type': 'string', 'description': 'The zone or name to sweep, e.g. example.com. Also as "name"; a URL is read as its host.'}}}
trace
Delegation walk
Use when the person wants to walk the delegation for a name, root to authoritative, like dig +trace. Returns each referral and glue, lame or unreachable servers, the final answer and a verdict.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'required': ['name'], 'properties': {'name': {'type': 'string', 'description': 'The name to walk. Also as "domain"; a URL is read as its host.'}, 'type': {'type': 'string', 'default': 'A', 'description': 'Record type for the final question'}}}
Verlauf
Letzte Tool-Änderungen
Entfernt
top_domains
1. October 2026 02:50
Entfernt
resolver_status
1. October 2026 02:50
Entfernt
resolver_history
1. October 2026 02:50
Entfernt
ksk_board
1. October 2026 02:50
Entfernt
dns_events
1. October 2026 02:50
Hinzugefügt
path_receipt
1. October 2026 02:50
Geändert
registration
1. October 2026 02:50
Geändert
alias_chain
1. October 2026 02:50
Geändert
sweep_domain
1. October 2026 02:50
Geändert
dnssec_chain
1. October 2026 02:50
Geändert
trace
1. October 2026 02:50
Geändert
dig
1. October 2026 02:50
Geändert
check_domain
1. October 2026 02:50
Hinzugefügt
registration
29. September 2026 02:59
Hinzugefügt
alias_chain
29. September 2026 02:59
Hinzugefügt
dnssec_chain
29. September 2026 02:59
Geändert
ksk_board
29. September 2026 02:59
Geändert
dns_events
29. September 2026 02:59
Geändert
top_domains
29. September 2026 02:59
Geändert
resolver_history
29. September 2026 02:59
Geändert
resolver_status
29. September 2026 02:59
Geändert
trace
29. September 2026 02:59
Geändert
check_domain
29. September 2026 02:59
Geändert
sweep_domain
29. September 2026 02:59
Geändert
dig
29. September 2026 02:59
Hinzugefügt
sweep_domain
27. September 2026 02:50
Geändert
top_domains
25. September 2026 02:59
Hinzugefügt
ksk_board
17. September 2026 12:54
Hinzugefügt
dns_events
17. September 2026 12:54
Hinzugefügt
top_domains
17. September 2026 12:54
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