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BuddyNS delegation lab

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Color Indication Color Indication Color Indication
  Zone.   Nameserver serving outdated data.   Nameserver from the BuddyNS backbone.
  Nameserver delegated by zone.   Server was queried and timed out.   Inconsistency between zone and registry.

Geographical distribution of the Authority servers

Location Server

Geographical locations are established via MaxMind's GeoLite technology. Some locations may be inexact.

Delegation tests for jp

Test Result Notes
Is Zone ERROR The indicated domain is not a zone: no authority information is announced for it. may be a simple domain; it is handled by parent zone jp. No authoritative servers could be reached to fetch authority parameters: this zone appears to be currently blacked out of the Internet, no domains in it can be resolved.
Zone/Registry consistent OK The list of nameservers declared by the last delegating server and the authoritative server match. Configuration looks healthy.
Authoritative servers consistent ERROR Authoritative nameservers for jp are serving inconsistent data. Clients may be confused by getting different answers depending on what destination nameserver they reached. The outdated zone data some nameservers are publishing may reference records pointing clients to IP addresses no longer in control of jp's organization, thus incurring data and identity theft. Serial numbers are:
Number of servers ERROR jp delegates its DNS to 0 servers. This does not fulfill DNS' requirements, which mandate a minimum of 2 servers for each zone. As soon as the server will experience some downtime, all services associated with jp will vanish from the Internet. You should get DNS redundancy immediately to fix this, and most likely you can get this at no cost with BuddyNS.
Unresponsive nameservers OK All queried nameservers responded; no dead/misconfigured/unavailable server was found in the chosen resolution path.
Recursion OK None of the DNS servers listed as authoritative for jp serves recursive queries to the public.
Truncation OK None of the DNS servers listed as authoritative for jp gives a truncated response for NS requests. Clients can successfully perform NS queries over the low-latency UDP protocol, without falling back to much slower TCP.
IPv6 WARNING None of the servers serving jp's DNS is reachable via IPv6. IPv6-enabled clients jp will need to revert to compatibility IPv4 protocol for every look up of services of jp. A growing number a IPv6-only clients will be unable to perform such look ups.

IPv6 score: %
DNSCurve No DNScurve is not supported for this zone. To leverage DNSCurve from BuddyNS, delegate jp using secure server names from BuddyNS.

Delegation trace for jp

Notes

The delegation trace below is one of the possible traversals of the delegation tree. Note that:

  • For zones with correct delegation, the same data is obtained regardless of which resolution path is traversed.
  • BuddyNS excludes its own servers from traversals when foreign servers are available.
  • Refresh this page to test with a different traversal path.

Here's the steps BuddyNS took to collect the DNS delegation chain for jp: