I have configured my Nokia G-240W-B router (https://networks.nokia.com/products/7368-isam-ont-g-240w-b) to use OpenDNS and though the welcome.opendns.com page shows a checkmark, internetbudguys and exampleadultsite pages are not blocked.
I have ran some of the commands I saw requested in other posts, I am sending the outputs below.
nslookup -type=txt debug.opendns.com.
Server: 2806-1080-ffff-0002-0000-0000-0000-000e.ipv6.infinitum.net.mx
Address: 2806:1080:ffff:2::e
opendns.com
primary name server = auth1.opendns.com
responsible mail addr = noc.opendns.com
serial = 1557316918
refresh = 16384 (4 hours 33 mins 4 secs)
retry = 2048 (34 mins 8 secs)
expire = 1048576 (12 days 3 hours 16 mins 16 secs)
default TTL = 2560 (42 mins 40 secs)
netsh interface ip show dns
Configuration for interface "Ethernet"
DNS servers configured through DHCP: None
Register with which suffix: Primary only
Configuration for interface "Local Area Connection* 10"
DNS servers configured through DHCP: None
Register with which suffix: Primary only
Configuration for interface "Local Area Connection* 11"
DNS servers configured through DHCP: None
Register with which suffix: Primary only
Configuration for interface "Wi-Fi"
DNS servers configured through DHCP: 208.67.222.222
208.67.220.220
Register with which suffix: Primary only
Configuration for interface "Bluetooth Network Connection"
DNS servers configured through DHCP: None
Register with which suffix: Primary only
Configuration for interface "Loopback Pseudo-Interface 1"
Statically Configured DNS Servers: None
Register with which suffix: Primary only
nslookup whoami.akamai.net.
Server: 2806-1080-ffff-0002-0000-0000-0000-000e.ipv6.infinitum.net.mx
Address: 2806:1080:ffff:2::e
Non-authoritative answer:
Name: whoami.akamai.net
Address: 201.144.127.251
