Every UK mobile network uses CGNAT on standard 4G connections. Getting a static IP requires either a carrier static APN (expensive, carrier-locked) or a WireGuard overlay like Speedroute (network-agnostic, fixed monthly fee).
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All options compared
| Method | Network-agnostic? | IP survives carrier change? | Cost | Reliability |
|---|---|---|---|---|
| Speedroute (WireGuard) | Yes | Yes | Fixed monthly | High |
| Carrier static IP APN | No | No | £10–30/month extra | Medium |
| Three 3internet APN | No | No | Free (historically) | Low — post-merger risk |
| Cloud relay / DDNS | Yes | Yes | Variable | Medium |
| L2TP VPN to own VPS | Yes | No — drops on IP change | VPS cost | Low on cellular |
Why Speedroute is right for most UK installers
- Any carrier: multi-network eUICC SIM works on EE, Vodafone, O2 and Three
- IP survives everything: carrier changes, roaming, failover — static IP never changes
- Zero-touch: pre-configured hardware, live in 2 minutes
- No carrier lock-in: Vodafone/Three merger changes nothing for Speedroute customers
Ready to solve CGNAT permanently?
Request your free IPv4 Guide and we will follow up with the right solution for your installs.