Smart Hub Pro DNS

mikefairgrieve — Thu, 02 Oct 2025 17:01:34 GMT

So my SH Pro finally updated last so i have changed the DNS on the router to Cloudfare however using dnschecker.tools the hub still uses BT DNS servers 😞 . Hub and extender have been rebooted since DNS was changed.

Anyone else getting this also?

Your DNS resolvers are:

BTNET-MNT

81.134.100.13ns: ns0.bt.netLondon, England, GB
81.134.100.25ns: ns0.bt.netLondon, England, GB
81.134.100.37ns: ns0.bt.netLondon, England, GB
81.134.100.39ns: ns0.bt.netLondon, England, GB
81.134.100.41ns: ns0.bt.netLondon, England, GB
81.134.101.15ns: ns0.bt.netLondon, England, GB
81.134.101.17ns: ns0.bt.netLondon, England, GB
81.134.101.19ns: ns0.bt.netLondon, England, GB
81.134.101.23ns: ns0.bt.netLondon, England, GB
81.134.101.26ns: ns0.bt.netLondon, England, GB
81.134.101.27ns: ns0.bt.netLondon, England, GB
81.134.101.31ns: ns0.bt.netLondon, England, GB
81.134.101.35ns: ns0.bt.netLondon, England, GB

Cloudflare

162.158.199.35ns: cruz.ns.cloudflare.comLondon, England, GB
172.70.84.17ns: cruz.ns.cloudflare.comLondon, England, GB
172.70.84.194ns: cruz.ns.cloudflare.comLondon, England, GB
172.71.177.34ns: cruz.ns.cloudflare.comLondon, England, GB

CLOUDFLARE_2400_CB00_0000_36

2400:cb00:21:1024::8d65:46c1ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:376:1024::ac46:5411ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:376:1024::ac46:54bens: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:984:1024::ac47:b122ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:989:1024::a29e:d521ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:989:1024::a29e:d522ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:991:1024::a29e:c723ns: chloe.ns.cloudflare.comLondon, England, GB

MNT-CLOUDFLARE

141.101.70.193ns: darl.ns.cloudflare.comLondon, England, GB

Oh no! Your DNS responses are not authenticated with DNSSEC:

PASS	PASS	PASS
FAIL	FAIL	FAIL
FAIL	FAIL	FAIL
FAIL	FAIL	FAIL

However if i manually set them on the network adapter it works properly, so does the Hub still secretly use BT DNS also even though you set it to No?

Your DNS resolvers are:

Cloudflare

162.158.199.34ns: cruz.ns.cloudflare.comLondon, England, GB
162.158.199.35ns: cruz.ns.cloudflare.comLondon, England, GB
162.158.213.33ns: cruz.ns.cloudflare.comLondon, England, GB
162.158.213.34ns: cruz.ns.cloudflare.comLondon, England, GB
162.158.215.35ns: cruz.ns.cloudflare.comLondon, England, GB
172.69.193.32ns: cruz.ns.cloudflare.comLondon, England, GB
172.69.193.33ns: cruz.ns.cloudflare.comLondon, England, GB
172.69.193.35ns: cruz.ns.cloudflare.comLondon, England, GB
172.70.84.17ns: cruz.ns.cloudflare.comLondon, England, GB
172.70.84.190ns: cruz.ns.cloudflare.comLondon, England, GB
172.70.84.194ns: cruz.ns.cloudflare.comLondon, England, GB
172.70.88.15ns: cruz.ns.cloudflare.comLondon, England, GB
172.70.88.101ns: cruz.ns.cloudflare.comLondon, England, GB
172.70.88.102ns: cruz.ns.cloudflare.comLondon, England, GB
172.70.160.35ns: cruz.ns.cloudflare.comLondon, England, GB
172.70.160.36ns: cruz.ns.cloudflare.comLondon, England, GB
172.71.177.34ns: cruz.ns.cloudflare.comLondon, England, GB
172.71.240.33ns: cruz.ns.cloudflare.comLondon, England, GB

CLOUDFLARE_2400_CB00_0000_36

2400:cb00:21:1024::8d65:46c1ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:21:1024::8d65:46c2ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:376:1024::ac46:5411ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:376:1024::ac46:54c2ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:377:1024::ac46:580fns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:377:1024::ac46:5865ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:377:1024::ac46:5866ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:736:1024::ac45:c120ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:736:1024::ac45:c121ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:736:1024::ac45:c123ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:793:1024::ac46:a022ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:793:1024::ac46:a023ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:793:1024::ac46:a024ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:984:1024::ac47:b122ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:985:1024::ac47:f021ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:989:1024::a29e:d521ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:989:1024::a29e:d522ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:990:1024::a29e:d723ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:991:1024::a29e:c722ns: chloe.ns.cloudflare.comLondon, England, GB
2400:cb00:991:1024::a29e:c723ns: chloe.ns.cloudflare.comLondon, England, GB

MNT-CLOUDFLARE

141.101.70.193ns: darl.ns.cloudflare.comLondon, England, GB
141.101.70.194ns: darl.ns.cloudflare.comLondon, England, GB

Great! Your DNS responses are authenticated with DNSSEC:

PASS	PASS	PASS
PASS	PASS	PASS
PASS	PASS	PASS
PASS	PASS	PASS

Re: Smart Hub Pro DNS

bobpullen — Sat, 04 Oct 2025 10:38:43 GMT

Did you renew the DHCP lease of the device you tested from after making changes in the hub?

The custom DNS feature on the EE hubs does not change the DNS resolvers assigned to the WAN connection of the router. Instead it modifies the DHCP server to issue your custom DNS addresses as part of the DHCP lease when a device establishes a connection to the hub (similar to you explicitly configuring DNS on the network adapter).

Re: Smart Hub Pro DNS

mikefairgrieve — Sat, 04 Oct 2025 11:43:33 GMT

The PC i was using to test has a static IP assigned at the router.

I just dont see why the BT DNS servers still show up, if the router has assigned the Cloudfare DNS to the PC but why when checking do BT show up when set as auto, however on same PC if i manually assign Coudfare DNS at network adapter everything passes perfect and no BT DNS?

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