is it DNS?

Is NextDNS down?

Reading loads from the board.

NextDNS answers on 45.90.28.0 and 45.90.30.0 (general purpose, no filtering). isitdns reads it from one seat, over DoT, every 3 min.

// addresses

IPv4
45.90.28.0 45.90.30.0
DoH
none on file here
Kind
public recursive resolver, probed (general purpose, no filtering)

// how isitdns reads it

The resolver board measures one rung continuously: does the resolver answer over DoT, how fast, and did it set the DNSSEC ad flag.

A strike opens after two degraded rounds in a row, unless the newest reading inside 4 minutes from a seat on a different network says that resolver is healthy.

We never claim to see the whole internet. We see what we watch, from where we watch it, and right now that is one seat.

// ask DNS itself

The same reading answers over DNS. One TXT record per resolver, written into the isitdns.net zone every 3 minutes: 

$ dig +short nextdns.isitdns.net TXT

It answers with the resolver id, its state, latency, whether it validated DNSSEC, and when the sample was taken. For the whole board in one line, ask dig +short help.isitdns.net TXT.

// the operator's own pages

Run by the operator. Not mirrored here.

// elsewhere on isitdns