is it DNS?
net.isitdns/isitdns · v2026-09-10 · MCP 2025-06-18
Live DNS: dig any public resolver, audit a domain, walk a delegation, read the resolver board.
Reachability
reachable
checked 2026-09-20 05:33 UTC
Registry status active
Tools pinned 8
b8db85e9c37d
Tools last changed
2026-09-16
Provenance
Registry namespace net.isitdns
(domain verified by the official registry)
Website
https://isitdns.net/agents
Remote endpoints
https://isitdns.net/mcp (streamable-http)
Observed changes
| When (UTC) | Event | Detail |
|---|---|---|
| 2026-09-16 05:33 | tools changed | 0 added, 0 removed, 1 changed |
| 2026-09-15 05:32 | tools changed | 0 added, 0 removed, 2 changed |
| 2026-09-12 05:31 | tools changed | 0 added, 0 removed, 2 changed |
| 2026-09-11 05:30 | first capture | 8 tools pinned |
Pinned tool definitions (8)
| Tool | Description |
|---|---|
| dig | Ask a public DNS resolver, or any public address, for a record, live, from the isitdns seat. Returns the answer, the flags, the rcode, Extended DNS Errors and the latency in the shape dig prints, plus the JSON. |
| check_domain | The eleven-check DNS audit for a domain: parent and child nameservers agree, no open recursion, DNSSEC chain, TTL sanity, mail posture, glue at the parent, a DS that matches a live DNSKEY, and whether a truncated UDP answer can be had... |
| trace | Walk the delegation from the root servers down to the authoritative server for a name, like dig +trace, and say in plain steps whether the delegation is healthy. |
| resolver_status | The live board: is public DNS OK right now? Every public resolver isitdns watches, its latest reading (status, latency, DNSSEC), read every 3 minutes over DoT, with the time it was read. Give a resolver to get one card. |
| resolver_history | The incident record for the public resolvers: start time, duration and severity of each. Notable incidents by default; all=true includes short degradations. Windows where several operators failed at once are excluded as our own seat's... |
| top_domains | The DNS health of the top 100 domains as of the last DAILY snapshot: rcode, addresses, DNSSEC and rank movement for each. Those come from one probe per day at 11:11:11 UTC and do not move intraday. The nameservers and the points are... |
| dns_events | Days when several resolvers were unhealthy at once, as episodes: when each began, how long it ran, how many resolvers were affected at the peak, and which. This is the tool for "was there a DNS outage recently". |
| ksk_board | The RFC 8509 root key sentinel across the public resolvers: which resolvers trust which root KSK, and the root DNSKEY set as read now. |
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