---
title: "A1: MCC 257 MNC 01"
mcc: "257"
mnc: "01"
plmn: "25701"
tadig: "BLRMD"
brand: "A1"
operator: "A1 Belarus"
country: "Belarus"
country_iso: "BY"
region: "Europe"
technologies: ["2G", "3G"]
updated: "2025-04-09"
canonical: "https://mcc-mnc.org/networks/257_01"
---

# A1: MCC 257, MNC 01 (Belarus)

**A1** (operator: A1 Belarus) is a mobile network in [Belarus](https://mcc-mnc.org/countries/belarus.md) (Europe), identified by MCC **257** and MNC **01**: PLMN ID 25701, also written 257-01 or 257 01, with the TADIG roaming code **BLRMD**. It runs 2G and 3G. Calling: VoLTE: Supported.

## Identifiers

| Field | Value |
|---|---|
| MCC (Mobile Country Code) | 257 |
| MNC (Mobile Network Code) | 01 |
| PLMN ID (MCC+MNC) | 25701 |
| TADIG code | BLRMD |
| Brand | A1 |
| Operator | A1 Belarus |
| Country | Belarus (BY) |
| Region | Europe |
| Dialling code | — |
| Technologies | 2G, 3G |
| Last updated | 2025-04-09 |

## Technologies & bands

| Generation | Bands | Measured cells |
|---|---|---|
| 2G | [GSM 1800](https://mcc-mnc.org/coverage/gsm_1800.md), [GSM 900](https://mcc-mnc.org/coverage/gsm_900.md) | 622 |
| 3G | [UMTS 2100](https://mcc-mnc.org/coverage/umts_2100.md), [UMTS 900](https://mcc-mnc.org/coverage/umts_900.md) | 855 |
| 4G | No bands on file | 493 |

## Voice & calling services

| Service | Status | Source |
|---|---|---|
| VoLTE | Supported | Reported by users · Oct 2026 |
| 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 A1

A1 Belarus, operating with Mobile Country Code (MCC) 257 and Mobile Network Code (MNC) 01, is a prominent mobile network operator in Belarus, Europe. As one of the leading providers in the country, A1 Belarus offers a comprehensive range of telecommunications services, including mobile voice and data, fixed broadband, and digital solutions. Competing with other major Belarusian operators like MTS Belarus and life:), A1 Belarus has established a strong presence through extensive network coverage, innovative offerings, and a commitment to customer satisfaction. The mobile network plays a crucial role in connecting individuals and businesses across Belarus, facilitating communication and contributing to the country's digital economy.

A1 Belarus, formerly known as Velcom, has a notable history of technological advancements in the Belarusian telecommunications landscape. The company has been instrumental in deploying advanced network technologies, such as 4G LTE, to enhance mobile broadband speeds and coverage for its subscribers. A1 Belarus frequently introduces innovative products and services, including data bundles, value-added applications, and IoT solutions, catering to the evolving needs of its customer base. Being part of the A1 Telekom Austria Group, A1 Belarus benefits from the group's expertise and resources, allowing it to provide a competitive and reliable mobile network experience in Belarus. Its network infrastructure directly contributes to the overall connectivity landscape of Belarus in Europe.

## APN settings

| Name | APN | Types | Protocol | Username | Password | MMSC | MMS proxy | MMS port | Source |
|---|---|---|---|---|---|---|---|---|---|
| Velcom BY // Web 25 | `web2.velcom.by` | default, supl | — | `web2` | `web2` | — | — | — | LineageOS |
| Velcom BY // Web 250 | `web3.velcom.by` | default, supl | — | `web3` | `web3` | — | — | — | LineageOS |
| Velcom BY // Web 500 | `vmi.velcom.by` | default, supl | — | `vmi` | `vmi` | — | — | — | LineageOS |
| Velcom BY // Web Basic | `web1.velcom.by` | default, supl | — | `web1` | `web1` | — | — | — | LineageOS |
| Velcom BY // Web Plus | `plus.velcom.by` | default, supl | — | `plus` | `plus` | — | — | — | LineageOS |
| Velcom Internet | `vmi.velcom.by` | default, ia, supl | — | — | — | — | — | — | AOSP |
| Velcom Internet Privet | `wap.privet.by` | default, ia, supl | — | — | — | — | — | — | AOSP |
| Velcom Web | `web.velcom.by` | default, supl | — | `web` | `web` | — | — | — | LineageOS |
| Velcom MMS | `mms.velcom.by` | mms | — | `mms` | `mms` | `http://mmsc` | 10.200.15.15 | 8080 | AOSP |
| Velcom MMS | `mms.velcom.by` | mms | — | `mms` | `mms` | `http://mms.velcom.by/servlets/mms` | 10.200.15.15 | 8080 | LineageOS |

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

## Cell towers

OpenCelliD has measured **1,970** cells on this network across 84 location/tracking areas, first seen 2009-09-04 and last seen 2026-09-06 (data as of 2026-09-27).

| Radio | Generation | Cells |
|---|---|---|
| GSM | 2G | 622 |
| UMTS | 3G | 855 |
| LTE | 4G | 493 |

Locate a single cell by MCC, MNC, LAC/TAC and cell ID with the https://mcc-mnc.org/cell-id-lookup tool, `GET /api/v1/cells` or the MCP `lookup_cell` tool. Cell data from OpenCelliD (https://opencellid.org), licensed CC BY-SA 4.0.

## Other networks in Belarus

| MCC | MNC | Network | TADIG |
|---|---|---|---|
| 257 | 02 | [MTS](https://mcc-mnc.org/networks/257_02.md) | BLR02 |
| 257 | 03 | [DIALLOG](https://mcc-mnc.org/networks/257_03.md) | — |
| 257 | 04 | [life:)](https://mcc-mnc.org/networks/257_04.md) | — |
| 257 | 05 | [byfly](https://mcc-mnc.org/networks/257_05.md) | — |
| 257 | 06 | [beCloud](https://mcc-mnc.org/networks/257_06.md) | — |

## Recent changes

- 2026-10-05: VoLTE changed from Unknown to Supported for A1 / A1 Belarus.

---

HTML version: https://mcc-mnc.org/networks/257_01 · Index for AI agents: https://mcc-mnc.org/llms.txt · Data is community-maintained; corrections welcome on the HTML page.