---
title: "CESG: MCC 234 MNC 56"
mcc: "234"
mnc: "56"
plmn: "23456"
operator: "CESG"
country: "United Kingdom"
country_iso: "GB"
region: "Europe"
updated: "2025-04-09"
canonical: "https://mcc-mnc.org/networks/234_56"
---

# CESG: MCC 234, MNC 56 (United Kingdom)

**CESG** is a mobile network in [United Kingdom](https://mcc-mnc.org/countries/united_kingdom.md) (Europe), identified by MCC **234** and MNC **56**: PLMN ID 23456, also written 234-56 or 234 56.

## Identifiers

| Field | Value |
|---|---|
| MCC (Mobile Country Code) | 234 |
| MNC (Mobile Network Code) | 56 |
| PLMN ID (MCC+MNC) | 23456 |
| TADIG code | — |
| Brand | — |
| Operator | CESG |
| Country | United Kingdom (GB) |
| Region | Europe |
| Dialling code | — |
| Technologies | — |
| Last updated | 2025-04-09 |

## Technologies & bands

No bands on file for this network.

## Voice & calling services

| Service | Status | Source |
|---|---|---|
| VoLTE | Unknown | — |
| VoWiFi | Unknown | — |
| ViLTE | Unknown | — |
| VoNR | Unknown | — |

A service not marked Supported or Not supported is unknown: no data either way, not a sign that the network lacks it.

## About CESG

CESG (Government Communications Headquarters Certified Equipment Security Group) operates as a specialized mobile network within the United Kingdom, identified by the Mobile Country Code (MCC) 234 and Mobile Network Code (MNC) 56. Unlike mainstream providers like Vodafone or EE, CESG focuses primarily on secure communications for government and public sector use, ensuring a high level of data protection and network integrity. The operational details can be somewhat opaque, as their infrastructure and services are tailored to meet stringent security requirements, contrasting markedly with the commercial strategies employed by public-facing mobile operators.

The United Kingdom's telecommunications landscape is diverse, with several major players dominating the market. However, CESG carves out a unique niche by prioritizing secure communication channels tailored to governmental needs within the UK and broader European context. While consumer-focused networks compete on coverage and speed, CESG's strength lies in its robust security protocols and dedicated infrastructure, providing a secure environment for sensitive data transmission and secure operational reliability for UK government entities using this network. The specifics of their technological deployment often remain confidential for national security reasons.

## Other networks in United Kingdom

| MCC | MNC | Network | TADIG |
|---|---|---|---|
| 234 | 00 | [BT](https://mcc-mnc.org/networks/234_00.md) | — |
| 234 | 01 | [Vectone Mobile](https://mcc-mnc.org/networks/234_01.md) | — |
| 234 | 02 | [O2 UK](https://mcc-mnc.org/networks/234_02.md) | — |
| 234 | 04 | [FMS Solutions Ltd](https://mcc-mnc.org/networks/234_04.md) | — |
| 234 | 05 | [COLT Mobile Telecommunications Limited](https://mcc-mnc.org/networks/234_05.md) | — |
| 234 | 06 | [Internet Computer Bureau Limited](https://mcc-mnc.org/networks/234_06.md) | — |
| 234 | 07 | [Vodafone UK](https://mcc-mnc.org/networks/234_07.md) | — |
| 234 | 08 | [BT OnePhone](https://mcc-mnc.org/networks/234_08.md) | — |
| 234 | 09 | [Tismi BV](https://mcc-mnc.org/networks/234_09.md) | — |
| 234 | 10 | [O2 UK](https://mcc-mnc.org/networks/234_10.md) | GBRCN |
| 234 | 11 | [O2 UK](https://mcc-mnc.org/networks/234_11.md) | — |
| 234 | 12 | [Railtrack](https://mcc-mnc.org/networks/234_12.md) | — |
| 234 | 13 | [Railtrack](https://mcc-mnc.org/networks/234_13.md) | — |
| 234 | 14 | [Hay Systems Ltd](https://mcc-mnc.org/networks/234_14.md) | — |
| 234 | 15 | [Vodafone UK](https://mcc-mnc.org/networks/234_15.md) | GBRVF |
| 234 | 16 | [TalkTalk](https://mcc-mnc.org/networks/234_16.md) | — |
| 234 | 17 | [FleXtel Limited](https://mcc-mnc.org/networks/234_17.md) | — |
| 234 | 18 | [Cloud9](https://mcc-mnc.org/networks/234_18.md) | — |
| 234 | 19 | [Private Mobile Networks PMN](https://mcc-mnc.org/networks/234_19.md) | — |
| 234 | 20 | [3](https://mcc-mnc.org/networks/234_20.md) | GBRHU |
| 234 | 21 | [LogicStar Ltd](https://mcc-mnc.org/networks/234_21.md) | — |
| 234 | 22 | [Telesign Mobile Limited](https://mcc-mnc.org/networks/234_22.md) | — |
| 234 | 23 | [Icron Network Limited](https://mcc-mnc.org/networks/234_23.md) | — |
| 234 | 24 | [Greenfone](https://mcc-mnc.org/networks/234_24.md) | — |
| 234 | 25 | [Truphone](https://mcc-mnc.org/networks/234_25.md) | — |
| 234 | 26 | [Lycamobile](https://mcc-mnc.org/networks/234_26.md) | — |
| 234 | 27 | [Teleena UK Limited](https://mcc-mnc.org/networks/234_27.md) | — |
| 234 | 28 | [Marathon Telecom Limited](https://mcc-mnc.org/networks/234_28.md) | — |
| 234 | 29 | [aql](https://mcc-mnc.org/networks/234_29.md) | — |
| 234 | 30 | [T-Mobile UK](https://mcc-mnc.org/networks/234_30.md) | GBRME |
| 234 | 31 | [T-Mobile UK](https://mcc-mnc.org/networks/234_31.md) | — |
| 234 | 32 | [T-Mobile UK](https://mcc-mnc.org/networks/234_32.md) | — |
| 234 | 33 | [Orange](https://mcc-mnc.org/networks/234_33.md) | GBROR |
| 234 | 34 | [Orange](https://mcc-mnc.org/networks/234_34.md) | — |
| 234 | 35 | [JSC Ingenium (UK) Limited](https://mcc-mnc.org/networks/234_35.md) | — |
| 234 | 36 | [Sure Mobile](https://mcc-mnc.org/networks/234_36.md) | — |
| 234 | 37 | [Synectiv Ltd](https://mcc-mnc.org/networks/234_37.md) | — |
| 234 | 38 | [Virgin Mobile](https://mcc-mnc.org/networks/234_38.md) | — |
| 234 | 39 | [Gamma Telecom Holdings Ltd.](https://mcc-mnc.org/networks/234_39.md) | — |
| 234 | 51 | [Relish](https://mcc-mnc.org/networks/234_51.md) | — |
| 234 | 52 | [Shyam Telecom UK Ltd](https://mcc-mnc.org/networks/234_52.md) | — |
| 234 | 53 | [Limitless Mobile Ltd](https://mcc-mnc.org/networks/234_53.md) | — |
| 234 | 54 | [iD Mobile](https://mcc-mnc.org/networks/234_54.md) | — |
| 234 | 57 | [Sky UK Limited](https://mcc-mnc.org/networks/234_57.md) | — |
| 234 | 59 | [Limitless Mobile Ltd](https://mcc-mnc.org/networks/234_59.md) | — |
| 234 | 70 | [AMSUK Ltd.](https://mcc-mnc.org/networks/234_70.md) | — |
| 234 | 71 | [Home Office](https://mcc-mnc.org/networks/234_71.md) | — |
| 234 | 72 | [Hanhaa Mobile](https://mcc-mnc.org/networks/234_72.md) | — |
| 234 | 73 | [Bluewave Communications Ltd](https://mcc-mnc.org/networks/234_73.md) | — |
| 234 | 76 | [BT](https://mcc-mnc.org/networks/234_76.md) | — |
| 234 | 78 | [Airwave](https://mcc-mnc.org/networks/234_78.md) | — |
| 234 | 86 | [EE](https://mcc-mnc.org/networks/234_86.md) | — |
| 235 | 01 | [EE](https://mcc-mnc.org/networks/235_01.md) | — |
| 235 | 02 | [EE](https://mcc-mnc.org/networks/235_02.md) | — |
| 235 | 03 | [Relish](https://mcc-mnc.org/networks/235_03.md) | — |
| 235 | 04 | [University of Strathclyde](https://mcc-mnc.org/networks/235_04.md) | — |
| 235 | 06 | [University of Strathclyde](https://mcc-mnc.org/networks/235_06.md) | — |
| 235 | 07 | [University of Strathclyde](https://mcc-mnc.org/networks/235_07.md) | — |
| 235 | 77 | [BT](https://mcc-mnc.org/networks/235_77.md) | — |
| 235 | 88 | [Telet Research (N.I.) Limited](https://mcc-mnc.org/networks/235_88.md) | — |
| 235 | 91 | [Vodafone UK](https://mcc-mnc.org/networks/235_91.md) | — |
| 235 | 92 | [Vodafone UK](https://mcc-mnc.org/networks/235_92.md) | — |
| 235 | 94 | [Hutchison 3G UK Ltd](https://mcc-mnc.org/networks/235_94.md) | — |
| 235 | 95 | [Network Rail Infrastructure Limited](https://mcc-mnc.org/networks/235_95.md) | — |

MCC 234 is also used outside United Kingdom: see [every network on MCC 234](https://mcc-mnc.org/mcc/234.md).

---

HTML version: https://mcc-mnc.org/networks/234_56 · Index for AI agents: https://mcc-mnc.org/llms.txt · Data is community-maintained; corrections welcome on the HTML page.