My companies website is not found by CloudFlare's DNS resolver

Hi All,

Website URL: infotec-systems.co.uk

My company has just been made aware that our website (url above) is inaccessible when using Cloudflare’s DNS resolver (specifically 1.1.1.2 and 1.0.0.2). We don’t seem to be flagged as malicious via https://radar.cloudflare.com/domains/domain/infotec-systems.co.uk

We get the error dns_probe_finished_nxdomain when attempting to access the site whilst using 1.1.1.2 However it works when using Google’s DNS or when using “Obtain an ip address automatically”.

Any help with this matter would be much appreciated.

Regards,
Michael

Your nameservers are misconfigured:

dig ns.microlite1.com +trace +nodnssec

; <<>> DiG 9.18.12-0ubuntu0.22.04.2-Ubuntu <<>> ns.microlite1.com +trace +nodnssec
;; global options: +cmd
.                       6626    IN      NS      h.root-servers.net.
.                       6626    IN      NS      m.root-servers.net.
.                       6626    IN      NS      g.root-servers.net.
.                       6626    IN      NS      c.root-servers.net.
.                       6626    IN      NS      b.root-servers.net.
.                       6626    IN      NS      d.root-servers.net.
.                       6626    IN      NS      a.root-servers.net.
.                       6626    IN      NS      f.root-servers.net.
.                       6626    IN      NS      l.root-servers.net.
.                       6626    IN      NS      j.root-servers.net.
.                       6626    IN      NS      i.root-servers.net.
.                       6626    IN      NS      k.root-servers.net.
.                       6626    IN      NS      e.root-servers.net.
;; Received 239 bytes from 127.0.0.53#53(127.0.0.53) in 0 ms

com.                    172800  IN      NS      a.gtld-servers.net.
com.                    172800  IN      NS      b.gtld-servers.net.
com.                    172800  IN      NS      c.gtld-servers.net.
com.                    172800  IN      NS      d.gtld-servers.net.
com.                    172800  IN      NS      e.gtld-servers.net.
com.                    172800  IN      NS      f.gtld-servers.net.
com.                    172800  IN      NS      g.gtld-servers.net.
com.                    172800  IN      NS      h.gtld-servers.net.
com.                    172800  IN      NS      i.gtld-servers.net.
com.                    172800  IN      NS      j.gtld-servers.net.
com.                    172800  IN      NS      k.gtld-servers.net.
com.                    172800  IN      NS      l.gtld-servers.net.
com.                    172800  IN      NS      m.gtld-servers.net.
;; Received 842 bytes from 2001:500:1::53#53(h.root-servers.net) in 28 ms

microlite1.com.         172800  IN      NS      ns.microlite1.com.
microlite1.com.         172800  IN      NS      ns2.microlite1.com.
;; Received 110 bytes from 2001:503:83eb::30#53(c.gtld-servers.net) in 8 ms

microlite1.com.         103886  IN      NS      ns2.microlite1.com.
microlite1.com.         103886  IN      NS      ns.microlite1.com.
;; BAD (HORIZONTAL) REFERRAL
;; Received 138 bytes from 192.248.166.2#53(ns2.microlite1.com) in 32 ms

microlite1.com.         103886  IN      NS      ns2.microlite1.com.
microlite1.com.         103886  IN      NS      ns.microlite1.com.
;; BAD (HORIZONTAL) REFERRAL
;; Received 138 bytes from 192.248.166.2#53(ns2.microlite1.com) in 32 ms

microlite1.com.         103886  IN      NS      ns2.microlite1.com.
microlite1.com.         103886  IN      NS      ns.microlite1.com.
;; BAD (HORIZONTAL) REFERRAL
;; Received 138 bytes from 192.248.166.2#53(ns2.microlite1.com) in 32 ms

ns.microlite1.com.      900     IN      A       195.224.99.190
microlite1.com.         900     IN      NS      ns2.microlite1.com.
microlite1.com.         900     IN      NS      ns.microlite1.com.
microlite1.com.         900     IN      NS      ns3.microlite1.com.
microlite1.com.         900     IN      NS      ns4.microlite1.com.
;; Received 206 bytes from 195.224.99.190#53(ns.microlite1.com) in 44 ms

As you can see, ns2.microlite1.com is configured as an authoritative nameserver for microlite1.com but does not respond correctly.

Whether DNS lookups for your domain fail or work is thus random, depending on which nameserver was queried.

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