PLMN Whitelist
Important Notice Regarding Firmware Version 6.6.0 and Above
- Feature Integration: As of firmware version 6.6.0, the functionality of this Router App is included as a standard firmware feature, accessible via Configuration → Mobile WAN → Operator.
- Recommendation: On routers running firmware version 6.6.0 or newer, it is strongly recommended to use the native firmware feature and uninstall this Router App to prevent potential conflicts.
- Migration Advisory: When transitioning from this Router App to the integrated feature, review the new settings carefully. Default values and available options may differ, and failing to adjust them could cause unexpected reboot behavior.
Basic Information
PLMN
In telecommunications, a Public Land Mobile Network (PLMN) is a combination of wireless communication services offered by a specific operator in a specific country. A PLMN is identified by a globally unique PLMN code consisting of a MCC (Mobile Country Code) and MNC (Mobile Network Code) — a five- or six-digit number, typically written in the form 001-01 or 001-001.
Czech Republic MCC is 230. MNC values for Czech operators are listed in the table below.
| MNC | Operator |
|---|---|
| 01 | T-Mobile |
| 02 | O2 |
| 03 | Vodafone |
| 04 | Nordic Telecom |
MNC values for Czech GSM operators
In this Router App, the PLMN representation omits the separating dash — for example, the T-Mobile PLMN code is 23001.
Blacklist vs. Whitelist
Blacklisting (denylisting) is a security measure that prevents specific entities — people, websites, or programs — from accessing a computer or network. A blacklist is a list of hosts denied access to a service, and is commonly used by antivirus software and firewalls.
Whitelisting (allowlisting) is a defensive measure that restricts access to only pre-approved content. All other content is blocked by default; only specifically permitted items are allowed to run or access the system.
Router App Description
Web Interface
Once the Router App is installed, its web interface can be accessed by clicking the Router App name on the Router Apps page of the router's web interface.
The left pane contains Customization, Troubleshoot, and Administration menu sections. The Administration section contains only the Return item, which returns to the router's main web configuration interface. The menu is shown in the figure below.
PLMN Whitelist
All settings for this Router App are configured in the PLMN Whitelist item in the Customization section.
| Item | Description |
|---|---|
| Enable PLMN Whitelist | Enables the PLMN Whitelist functionality. |
| PLMN | List of whitelisted PLMN entries. |
PLMN whitelist configuration items
To add a PLMN entry, type the PLMN code into the text field and click Add, then click Apply. Multiple PLMNs can be whitelisted. The figure below shows an example where T-Mobile and O2 have been added and Vodafone is being added.
System Log
The System Log section displays log messages related to the PLMN Whitelist Router App.
