--- title: "Y Mobile: MCC 440 MNC 00" mcc: "440" mnc: "00" plmn: "44000" brand: "Y Mobile" operator: "SoftBank Corp." country: "Japan" country_iso: "JP" region: "Asia & Middle East" technologies: ["3G"] updated: "2025-04-09" canonical: "https://mcc-mnc.org/networks/440_00" --- # Y Mobile: MCC 440, MNC 00 (Japan) **Y Mobile** (operator: SoftBank Corp.) is a mobile network in [Japan](https://mcc-mnc.org/countries/japan.md) (Asia & Middle East), identified by MCC **440** and MNC **00**: PLMN ID 44000, also written 440-00 or 440 00. It runs 3G. Calling: VoLTE: Supported. ## Identifiers | Field | Value | |---|---| | MCC (Mobile Country Code) | 440 | | MNC (Mobile Network Code) | 00 | | PLMN ID (MCC+MNC) | 44000 | | TADIG code | — | | Brand | Y Mobile | | Operator | SoftBank Corp. | | Country | Japan (JP) | | Region | Asia & Middle East | | Dialling code | — | | Technologies | 3G | | Last updated | 2025-04-09 | ## Technologies & bands | Generation | Bands | Measured cells | |---|---|---| | 3G | [UMTS 1800](https://mcc-mnc.org/coverage/umts_1800.md) | — | | 4G | No bands on file | 1,528 | ## 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 Y Mobile SoftBank Corp, operating under the Y! Mobile brand in Japan, is a key player in the country's mobile telecommunications landscape. As part of the Asia & Middle East region, and specifically located in Japan, Y! Mobile holds significant market share, offering a range of services including voice, data, and internet access. Identified by the Mobile Country Code (MCC) 440 and Mobile Network Code (MNC) 00, Y! Mobile plays a crucial role in connecting millions of users across Japan. They compete with rival mobile networks such as NTT Docomo and KDDI (au) ensuring Japanese consumers have various mobile data options. Their expansion into 5G technology is also a key factor in its competition against its rivals. The network's strategic focus on affordable plans and simplified pricing structures has resonated particularly well with younger demographics and budget-conscious consumers in Japan. Leveraging the SoftBank group's established infrastructure they are able to offer a wide range of coverage throught the country. Y! Mobile continues to evolve its service offerings and adopt new technologies, solidifying its place as a vital mobile network in the region. ## Android carrier config highlights | Setting | Value | Key | |---|---|---| | VoLTE available | Yes | `carrier_volte_available_bool` | | VoLTE replacement rat | 3 | `volte_replacement_rat_int` | | Show 4G for LTE data icon | Yes | `show_4g_for_lte_data_icon_bool` | | Max message text size | -1 | `maxMessageTextSize` | | Max MMS image height | 1944 | `maxImageHeight` | | Max MMS image width | 2592 | `maxImageWidth` | | Max MMS size (bytes) | 307200 | `maxMessageSize` | | MMS enabled | Yes | `enabledMMS` | | Recipient limit | -1 | `recipientLimit` | ## Cell towers OpenCelliD has measured **1,528** cells on this network across 81 location/tracking areas, first seen 2019-09-24 and last seen 2026-09-06 (data as of 2026-09-27). | Radio | Generation | Cells | |---|---|---| | LTE | 4G | 1,528 | 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 Japan | MCC | MNC | Network | TADIG | |---|---|---|---| | 440 | 01 | [UQ WiMAX](https://mcc-mnc.org/networks/440_01.md) | — | | 440 | 02 | [Hanshin Cable Engineering Co., Ltd.](https://mcc-mnc.org/networks/440_02.md) | — | | 440 | 03 | [IIJmio](https://mcc-mnc.org/networks/440_03.md) | — | | 440 | 04 | [Japan Radio Company, Ltd.](https://mcc-mnc.org/networks/440_04.md) | — | | 440 | 05 | [Wireless City Planning Inc.](https://mcc-mnc.org/networks/440_05.md) | — | | 440 | 06 | [SAKURA Internet Inc.](https://mcc-mnc.org/networks/440_06.md) | — | | 440 | 07 | [LTE-X, Inc.](https://mcc-mnc.org/networks/440_07.md) | — | | 440 | 08 | [Panasonic Systems Solutions Japan Co., Ltd.](https://mcc-mnc.org/networks/440_08.md) | — | | 440 | 09 | [Marubeni Wireless Communications Inc.](https://mcc-mnc.org/networks/440_09.md) | — | | 440 | 10 | [NTT docomo](https://mcc-mnc.org/networks/440_10.md) | JPNDO | | 440 | 11 | [Rakuten Mobile Network, Inc.](https://mcc-mnc.org/networks/440_11.md) | — | | 440 | 12 | [Cable media waiwai Co., Ltd.](https://mcc-mnc.org/networks/440_12.md) | — | | 440 | 20 | [SoftBank](https://mcc-mnc.org/networks/440_20.md) | JPNJP | | 440 | 21 | [SoftBank](https://mcc-mnc.org/networks/440_21.md) | — | | 440 | 50 | [au](https://mcc-mnc.org/networks/440_50.md) | — | | 440 | 51 | [au](https://mcc-mnc.org/networks/440_51.md) | JPNKI | | 440 | 52 | [au](https://mcc-mnc.org/networks/440_52.md) | — | | 440 | 53 | [au](https://mcc-mnc.org/networks/440_53.md) | — | | 440 | 54 | [au](https://mcc-mnc.org/networks/440_54.md) | — | | 440 | 70 | [au](https://mcc-mnc.org/networks/440_70.md) | — | | 440 | 71 | [au](https://mcc-mnc.org/networks/440_71.md) | — | | 440 | 72 | [au](https://mcc-mnc.org/networks/440_72.md) | — | | 440 | 73 | [au](https://mcc-mnc.org/networks/440_73.md) | — | | 440 | 74 | [au](https://mcc-mnc.org/networks/440_74.md) | — | | 440 | 75 | [au](https://mcc-mnc.org/networks/440_75.md) | — | | 440 | 76 | [au](https://mcc-mnc.org/networks/440_76.md) | — | | 440 | 78 | [au](https://mcc-mnc.org/networks/440_78.md) | — | | 440 | 91 | [Tokyo Organising Committee of the Olympic and Paralympic Games](https://mcc-mnc.org/networks/440_91.md) | — | | 441 | 01 | [SoftBank](https://mcc-mnc.org/networks/441_01.md) | — | | 441 | 10 | [UQ WiMAX](https://mcc-mnc.org/networks/441_10.md) | — | --- HTML version: https://mcc-mnc.org/networks/440_00 · Index for AI agents: https://mcc-mnc.org/llms.txt · Data is community-maintained; corrections welcome on the HTML page.