---
title: "IM3: MCC 510 MNC 21"
mcc: "510"
mnc: "21"
plmn: "51021"
tadig: "IDNIM"
brand: "IM3"
operator: "PT Indonesian Satellite Corporation Tbk (INDOSAT)"
country: "Indonesia"
country_iso: "ID"
region: "Oceania"
technologies: ["2G"]
updated: "2025-04-09"
canonical: "https://mcc-mnc.org/networks/510_21"
---

# IM3: MCC 510, MNC 21 (Indonesia)

**IM3** (operator: PT Indonesian Satellite Corporation Tbk (INDOSAT)) is a mobile network in [Indonesia](https://mcc-mnc.org/countries/indonesia.md) (Oceania), identified by MCC **510** and MNC **21**: PLMN ID 51021, also written 510-21 or 510 21, with the TADIG roaming code **IDNIM**. It runs 2G.

## Identifiers

| Field | Value |
|---|---|
| MCC (Mobile Country Code) | 510 |
| MNC (Mobile Network Code) | 21 |
| PLMN ID (MCC+MNC) | 51021 |
| TADIG code | IDNIM |
| Brand | IM3 |
| Operator | PT Indonesian Satellite Corporation Tbk (INDOSAT) |
| Country | Indonesia (ID) |
| Region | Oceania |
| Dialling code | — |
| Technologies | 2G |
| Last updated | 2025-04-09 |

## Technologies & bands

| Generation | Bands | Measured cells |
|---|---|---|
| 2G | [GSM 1800](https://mcc-mnc.org/coverage/gsm_1800.md) | 416 |
| 4G | No bands on file | 9 |

## 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 IM3

IM3, operated by PT Indonesian Satellite Corporation Tbk (Indosat Ooredoo Hutchison), stands as one of Indonesia's leading mobile network providers. As a key player in Oceania's telecommunications landscape, IM3 serves millions across the Indonesian archipelago, offering a range of services from basic voice and SMS to high-speed mobile internet leveraging 4G and increasingly, 5G technology. Identified by the Mobile Country Code (MCC) 510, representing Indonesia, and Mobile Network Code (MNC) 21, IM3 holds a significant market share, rivalling other major Indonesian networks like Telkomsel, offering competitive data packages and innovative services aimed at Indonesia's diverse population.

IM3 has a rich history in Indonesia, evolving from a provider primarily focused on international satellite communication to becoming a dominant force in the mobile sector. Their strategy often involves targeting the youth market with attractive data deals and leveraging popular culture in their marketing campaigns, setting them apart in a competitive landscape. The network's coverage extends across the major islands, including Java, Sumatra, Kalimantan, Sulawesi, and Papua, continually improving its infrastructure to meet the growing demands of a digitally connected Indonesia. As Indonesia continues its digital transformation, understanding IM3's role through its MCC and MNC underscores its importance in the country's connectivity infrastructure.

## APN settings

| Name | APN | Types | Protocol | Username | Password | MMSC | MMS proxy | MMS port | Source |
|---|---|---|---|---|---|---|---|---|---|
| IM3 Internet | `www.indosat-m3.net` | default, supl | — | `gprs` | `im3` | — | — | — | LineageOS |
| Internet | `indosatgprs` | default, ia, supl | — | — | — | — | — | — | AOSP |
| IM3 MMS | `indosatmms` | mms | — | `indosat` | `indosat` | `http://mmsc.indosat.com` | 10.19.19.19 | 8080 | LineageOS |
| Indosat MMS | `indosatmms` | mms | — | `indosat` | `indosat` | `http://mmsc.indosat.com` | 10.19.19.19 | 8080 | AOSP |

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

## Android carrier config highlights

| Setting | Value | Key |
|---|---|---|
| Treated as home (not roaming) | 51001 | `non_roaming_operator_string_array` |

## Cell towers

OpenCelliD has measured **425** cells on this network across 80 location/tracking areas, first seen 2024-07-05 and last seen 2026-09-16 (data as of 2026-09-27).

| Radio | Generation | Cells |
|---|---|---|
| GSM | 2G | 416 |
| LTE | 4G | 9 |

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 Indonesia

| MCC | MNC | Network | TADIG |
|---|---|---|---|
| 510 | 00 | [PSN](https://mcc-mnc.org/networks/510_00.md) | — |
| 510 | 01 | [Indosat Ooredoo](https://mcc-mnc.org/networks/510_01.md) | IDNSL |
| 510 | 03 | [StarOne](https://mcc-mnc.org/networks/510_03.md) | — |
| 510 | 07 | [TelkomFlexi](https://mcc-mnc.org/networks/510_07.md) | — |
| 510 | 08 | [AXIS](https://mcc-mnc.org/networks/510_08.md) | IDNLT |
| 510 | 09 | [Smartfren](https://mcc-mnc.org/networks/510_09.md) | — |
| 510 | 10 | [Telkomsel](https://mcc-mnc.org/networks/510_10.md) | IDNTS |
| 510 | 11 | [XL](https://mcc-mnc.org/networks/510_11.md) | IDNEX |
| 510 | 20 | [TELKOMMobile](https://mcc-mnc.org/networks/510_20.md) | — |
| 510 | 27 | [Net 1](https://mcc-mnc.org/networks/510_27.md) | — |
| 510 | 28 | [Fren Hepi](https://mcc-mnc.org/networks/510_28.md) | — |
| 510 | 78 | [Hinet](https://mcc-mnc.org/networks/510_78.md) | — |
| 510 | 88 | [BOLT! 4G LTE](https://mcc-mnc.org/networks/510_88.md) | — |
| 510 | 89 | [3](https://mcc-mnc.org/networks/510_89.md) | IDN89 |
| 510 | 99 | [Esia](https://mcc-mnc.org/networks/510_99.md) | — |

---

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