Custom DNS, DNS-over-HTTPS (DoH) & IPv6

Cellular carriers frequently intercept unencrypted DNS traffic, inject ads, or block domain names via transparent DNS proxies.

QManager RM551E Custom DNS screen — RM551E: Give devices on your network your own DNS servers, for IPv4 and IPv6.

Why Override Carrier DNS?#

Eliminate Carrier Tracking: Prevent mobile operators from logging your visited domain names.
Bypass Censorship & CDN Throttling: Carrier DNS servers often return degraded CDN endpoints for video services.
Faster Lookups: Public resolvers like Cloudflare and Quad9 deliver sub-10ms lookup times.

One-Click Provider Presets#

QManager includes pre-configured, tested DNS configurations:

Cloudflare: 1.1.1.1, 1.0.0.1 / 2606:4700:4700::1111
Quad9 (Security & Malware Filter): 9.9.9.9, 149.112.112.112
Google Public DNS: 8.8.8.8, 8.8.4.4
AdGuard (Ad Blocking): 94.140.14.14, 94.140.15.15

IPv6 DNS & Upstream Failover#

If your SIM card provisions an IPv6-only or dual-stack IPv4v6 PDP context, QManager binds IPv6 resolvers alongside IPv4 and configures dnsmasq fallback to ensure zero DNS resolution drops.

Screens in QManager#

QManager RM520N Custom DNS screen — RM520N: Custom DNS forwards LAN lookups to your own resolvers instead of the carrier's.