---
title: "COLT Mobile Telecommunications Limited: MCC 234 MNC 05"
mcc: "234"
mnc: "05"
plmn: "23405"
operator: "COLT Mobile Telecommunications Limited"
country: "United Kingdom"
country_iso: "GB"
region: "Europe"
updated: "2025-04-09"
canonical: "https://mcc-mnc.org/networks/234_05"
---

# COLT Mobile Telecommunications Limited: MCC 234, MNC 05 (United Kingdom)

**COLT Mobile Telecommunications Limited** is a mobile network in [United Kingdom](https://mcc-mnc.org/countries/united_kingdom.md) (Europe), identified by MCC **234** and MNC **05**: PLMN ID 23405, also written 234-05 or 234 05. Calling: VoLTE: Supported.

## Identifiers

| Field | Value |
|---|---|
| MCC (Mobile Country Code) | 234 |
| MNC (Mobile Network Code) | 05 |
| PLMN ID (MCC+MNC) | 23405 |
| TADIG code | — |
| Brand | — |
| Operator | COLT Mobile Telecommunications Limited |
| 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 | Supported | Android carrier config |
| 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 COLT Mobile Telecommunications Limited

**COLT Mobile Telecommunications Limited (United Kingdom): An Overview**

COLT Mobile Telecommunications Limited, operating in the United Kingdom, is identified by the Mobile Country Code (MCC) 234 and Mobile Network Code (MNC) 05. As a mobile network operator (MNO) serving the UK market, COLT provides various telecommunications services to businesses and consumers. While perhaps not as widely recognised as some of the larger UK networks like Vodafone, EE, O2, or Three, COLT plays a significant role, particularly in specific segments of the market, often focusing on enterprise solutions and data services rather than direct consumer offerings. Their MCC and MNC uniquely identify them as a UK-based operator according to international mobile network standards, facilitating roaming agreements and interoperability with other networks across Europe and globally.

Understanding COLT's position within the competitive UK mobile landscape requires context. The UK is a mature mobile market with extensive 4G and growing 5G coverage. Operators compete fiercely on price, data allowances, and network performance. While detailed market share information specific to COLT's mobile operations might not be readily available due to their business focus, their contribution to the overall telecommunications infrastructure in the United Kingdom is undeniable. Their core business likely involves offering specialised communication solutions, potentially contributing significantly to connectivity for businesses based in London or other major financial and industrial hubs across the UK.

## APN settings

| Name | APN | Types | Protocol | Username | Password | MMSC | MMS proxy | MMS port | Source |
|---|---|---|---|---|---|---|---|---|---|
| Spitfire Data | `spitfire1` | default, ia, supl | — | — | — | — | — | — | AOSP |
| Spitfire MMS | `mms` | mms | — | `mms` | `mms` | `http://mms.spitfire.co.uk/mms` | 87.224.55.90 | 8080 | AOSP |
| Spitfire IMS | `ims` | ims | IPV4V6 | — | — | — | — | — | AOSP |

Settings come from Android's AOSP and LineageOS APN lists and user corrections.

## Android carrier config highlights

| Setting | Value | Key |
|---|---|---|
| VoLTE available | Yes | `carrier_volte_available_bool` |

## 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 | 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 | 56 | [CESG](https://mcc-mnc.org/networks/234_56.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_05 · Index for AI agents: https://mcc-mnc.org/llms.txt · Data is community-maintained; corrections welcome on the HTML page.