Cambodia +855
To call Cambodia from abroad, dial your exit code (or +), then 855, then the local number without its leading 0. In full: +855 91 234 567.
The country calling code for Cambodia is +855. A number starting +855 or 00855 is a call to or from Cambodia. From abroad: +855 91 234 567.
To call Cambodia from abroad, dial your exit code (or +), then 855, then the local number without its leading 0. The +855 code identifies the country; the following digits identify the line (landline or mobile).
How to call Cambodia from abroad
011 855 91 234 56700 855 91 234 5670011 855 91 234 567+855 91 234 56791 234 567 is a real-format Cambodia mobile number (example from the ITU-T numbering plan): replace it with the number you were given, without its leading 0.
Cambodia area codes
In Cambodia, landlines usually include an area code after +855 (without its leading 0). Mobiles have no area code.
Number format
023 756 789from abroad+855 23 756 789091 234 567from abroad+855 91 234 567Landline numbers in Cambodia have 8 or 9 digits after the country code; mobile numbers have 8 or 9 digits. The national prefix 0 is only dialled inside the country — drop it after +855.
Calling abroad from Cambodia
To call another country from Cambodia, dial the exit code 00 + carrier code (or + on a mobile), then the country code, then the number. From Cambodia to the United States, for example: + 1 201 555 0123.
A Cambodia number in international format is written +855 …. The + stands for the exit prefix (00 in much of the world, 011 in North America). Switching to international format, drop the leading 0.
Cheapest ways to call Cambodia
With internet on both ends, apps like WhatsApp, Signal or FaceTime call Cambodia for free. To reach a number without an app, VoIP services are usually cheaper than your operator’s international rate.
Frequently asked questions
What country has the code +855?
Cambodia has the country calling code +855.
How do I call Cambodia from the United States?
Dial 011, then 855, then the local number without its leading 0 — for example 011 91 234 567.
What does +855 mean?
It is the international dialing code for Cambodia. The + stands for your exit code (00 in much of the world, 011 in North America).
Is +855 mobile or landline?
The +855 code identifies the country, not the line type; Cambodia landlines and mobiles share it.
A country code covers a whole nation; the full number depends on the city and operator.
Mobile networks in Cambodia
3 mobile network operators run their own networks in Cambodia. The largest is Metfone, with about 9.00 million subscribers (2015). Pick the one with the best coverage where you will spend most of your time.
Owned by Viettel Cambodia
Owned by Axiata Group Berhad
Owned by The Royal Group
- 4G/5G frequency bands used in Cambodia: LTE 1800, LTE 2100. Most recent smartphones cover them; older or regional models may miss some.
Operators, subscriber counts, network codes and switch-off dates: Wikipedia (lists of mobile network operators, mobile network codes, 2G/3G phase-out, mobile number portability), licensed CC BY-SA 4.0. Figures come from each operator or regulator at the date shown.
Getting a SIM card in Cambodia
What visitors and new residents need to know before buying a local SIM or eSIM in Cambodia, with a source for each point.
Buying a SIM as a visitor
Mandatory: operators must obtain and verify a valid ID before activating any SIM; foreigners use their passport (Cellcard asks for a passport with valid visa). TRC treats selling or using a SIM without proper ID as fraud; on 15 June 2026 it announced penalties against Viettel (Metfone) for SIMs registered on another person's ID, and the telecom minister has pledged to eliminate improperly registered SIMs by August 2026. Devices: under the 2023 sub-decree on equipment identity registration (EIRS), phones of visitors staying no more than 60 days are placed on a conditional authorised list.
Source: trc.gov.kh · cellcard.com.kh · cambodianess.com · lexology.com
Where to buy it
Official operator stores (Cellcard, Smart, Metfone) in towns, with passport; Cellcard sells a 'Traveller SIM'. SIM booths have operated in the Phnom Penh airport arrivals area, but a 2026 travel guide reports frequent overcharging there and recommends official stores in town.
Source: toomanyadapters.com · cellcard.com.kh
Getting a monthly contract as a resident
Cellcard asks for: name in Khmer and English (as on the ID), current or installation address, National ID card or, for foreigners, passport with a valid visa, plus a contact number and e-mail address.
Source: cellcard.com.kh
Scam calls and texts
Telecommunication Regulator of Cambodia (TRC): hotline 6789 (business hours), e-mail info@trc.gov.kh or TRC's official Facebook page, for scam calls/SMS and irregular SIM sales. The Ad-Hoc Committee for Combating Tech Scams uses short codes 1246 / 1247. No do-not-call registry identified.
Source: trc.gov.kh · trc.gov.kh
WhatsApp and calling apps
No restriction on WhatsApp, FaceTime or Skype calls known. On 9 June 2026 TRC acknowledged 5-10 second connection delays on Telegram voice/video calls and said it was working with Telegram to fix them. OONI WhatsApp reachability tests between 1 June and 27 September 2026: 2,071 of 2,528 measurements OK, 0 confirmed blocks.
Source: trc.gov.kh · api.ooni.io
Checked on 28 September 2026 against the sources linked on each card (regulators, government portals and operators first). SIM and ID rules change often: confirm with the operator before you travel.
Staying connected in Cambodia
With 116 mobile subscriptions per 100 people, almost everyone in Cambodia has a mobile — a WhatsApp, Signal or FaceTime call is usually the easiest way in. Only 69 % of people use the internet, so a plain phone call may reach more people than an app.
Source: World Bank / ITU World Telecommunication indicators (IT.CEL.SETS.P2, IT.NET.USER.ZS, IT.MLT.MAIN.P2), latest available year.
Free and premium numbers in Cambodia
+855 1800 123 456Free from inside Cambodia (numbers starting with 1800). From abroad these numbers are often unreachable or charged at the international rate.
+855 1900 123 456Surcharged services — ranges starting with 1900. Do not call back an unknown missed call from such a range: the cost is far above a normal call.
Number ranges: ITU-T national numbering plan for Cambodia via Google libphonenumber.
Laos +856
Thailand +66
Vietnam +84