Hong Kong
Hong KongHK
PLMN ID · 45400
MCC
Mobile Country Code
MNC
Mobile Network Code
PLMN
MCC + MNC
TADIG
GSMA roaming code
Technology
2G · 3G · 4G on this network
Record
Updated 2025-04-09
- Brand
- 1O1O / One2Free / New World Mobility / SUNMobile
- Operator
- CSL Limited
- Country
- Hong Kong(HK)
- Region
- Asia & Middle East
- Dialling code
- —
- Mobile Country Code
- All 32 networks on MCC 454
- Mobile Network Code
- PLMN ID
- What is a PLMN ID?
- TADIG code
- TADIG directory
- Technologies
- 2G · 3G · 4G6 bands on file
- VoLTE (4G calling)
- LikelyNetwork publishes an IMS APNReport
- Wi-Fi calling
- UnknownTell us
- Video calling
- UnknownTell us
- VoNR (5G calling)
- UnknownTell us
- Status
- Live
> This record is community-maintained. Spotted something wrong? Suggest an edit.
MVNOs
Add an MVNOMVNOs sell their own SIMs and plans but run on 1O1O / One2Free / New World Mobility / SUNMobile's network rather than owning one.
Regional Global SIM using 1O1O / One2Free / New World Mobility / SUNMobile's numbering
Cell towers
Last measured 2026-09-17
2,455
Cells
81
Location areas
31,174
Measurements
2015
First measured
Find a cell on this network
> Enter a cell ID from this network, or press Example, to see where the cell is and how far it reaches.
Crowd-sourced cell measurements from OpenCelliD, licensed CC BY-SA 4.0 · as of 2026-09-27. Counts are cells people have measured, not an operator's own figures.
About 1O1O / One2Free / New World Mobility / SUNMobile
CSL Limited operates a significant mobile network in Hong Kong under several brands, including 1O1O, One2Free, New World Mobility, and SUN Mobile. As a key player in Hong Kong's vibrant telecommunications market, CSL provides a range of services to both consumers and businesses. It is one of the major networks alongside others like SmarTone and HKT (PCCW Mobile), contributing heavily to the city's high mobile penetration rate. Understanding these networks often requires knowing their assigned identifiers, and CSL’s presence is easily identifiable by its Mobile Country Code (MCC) of 454, representing Hong Kong, and its Mobile Network Code (MNC) which is 0. Hong Kong, located in Asia, possesses a sophisticated mobile infrastructure landscape. CSL's various brands cater to different segments of the population, from premium users seeking advanced features with 1O1O, to budget-conscious subscribers through SUN Mobile. CSL was one of the first to introduce 5G to Hong Kong. Spotting an MCC of 454 paired with an MNC of 0 on your mobile device indicates you're connected to CSL's network in Hong Kong, a country known for its efficient and cutting-edge communication systems. This MCC/MNC combination is crucial for network operators and subscribers alike for identifying regional service providers.
APN settings
Add an APN▸▾ 20 more APNs for specific SIMs on this network
Change history
All changesNo approved changes to this record yet. Suggest one.