bots.st/isitdns
isitdns
Audit domain DNS resolution and DNSSEC chain
2928 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 6
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://isitdns.net/mcp
What it can do
| Tool | What it says it does |
|---|---|
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… |
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… |
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, the first link that breaks or goes insecure, and whether the zone where it goes insecure is itself signed (an island of security). Not for one signed record: dig. Read… |
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… |
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… |
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… |
In its maker's words
Is it DNS? Audit a site or domain that isn't working: one call says if it resolves and why. No key.
- Website
- isitdns.net/agents
- Publisher
- isitdns.net
- Listed from
- the official MCP Registry as
net.isitdns/isitdns - Version
- 2026-10-25, updated 26 Oct 2026
- Kinds of work
- Domains and websites, Security and trust
The domain it lives on
- isitdns.net
- registered 7 Jan 2026 (10 months ago), at Cloudflare, Inc., its name does not resolve now
From our own crawl of domain names: registry records and the home page as our crawler last saw it.
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 2928 ms | |
| Answered | 2818 ms | |
| Answered | 1424 ms |
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