Cambodia Country Code +855
The international country calling code for Cambodia is +855. Cambodia uses a closed national numbering plan with a mandatory trunk prefix 0 for domestic calls and 8–9 digit national numbers (excluding the country code). Landlines use area codes such as 023 Phnom Penh, 032 Takeo or 063 Siem Reap, while mobiles use operator prefixes like 010, 012, 088, 097 and others.
A typical landline in Phnom Penh is dialed inside Cambodia as 023 123 456; from abroad this becomes +855 23 123 456 (drop the leading 0). Mobile numbers normally start with 0 + two- or three-digit operator code and then 6 or 7 subscriber digits, giving 8–10 digits in total domestically. Internationally, they appear as +855 10 234 567 or +855 88 234 5678 depending on the prefix and length.
This guide breaks down Cambodia’s +855 dialing format, explains how to call Cambodian numbers from the US, UK and other countries, highlights the local time zone Indochina Time (ICT, UTC+7) and lists emergency numbers such as 117 (police), 118 (fire) and 119 (ambulance) that travellers, NGOs and businesses should know.
Example landline (intl.)
+855 23 123 456
Phnom Penh fixed line: domestic 023 123 456, abroad +855 23 123 456.
Example mobile
+855 10 234 567
Shorter mobile format: local 010 234 567, international +855 10 234 567.
Longer mobile
+855 88 234 5678
9-digit NSN example: domestic 088 234 5678, international +855 88 234 5678.
Overview – where +855 is used
The country code +855 is used throughout Cambodia, home to Phnom Penh, the temple complex of Angkor, garment factories, rice exports and a fast-growing tourism and services sector. You will see +855 numbers on hotels in Siem Reap and Sihanoukville, logistics companies along the Mekong, NGOs and development projects, and government offices in the capital.
Cambodia’s numbering plan is managed by the Telecommunication Regulator of Cambodia (TRC) and is classified as a closed plan: subscriber numbers have fixed length and you always dial the full national number starting with 0 inside the country. Landlines combine a 3-digit code such as 023, 032, 063 (0 plus a two-digit area identifier) and a 6- or 7-digit subscriber number. Mobiles follow patterns like 010 234 567 or 088 234 5678, where the digits after the initial 0 identify the operator (Smart, Metfone, Cellcard, etc.).
For data quality and CRM work, the key rule is simple: international-format Cambodian numbers should always look like +855 followed by 8 or 9 digits. If you see the pattern 0xx… after +855, the trunk 0 has not been removed properly and should be edited out.
Typical +855 use cases in business & travel
- Tourism & hospitality – hotels, guesthouses, tour companies and transport providers in Phnom Penh, Siem Reap and coastal resorts.
- Manufacturing & exports – garment factories, rice and cashew exporters, logistics hubs along the Thai and Vietnamese borders.
- NGOs & development projects – health, education and infrastructure programmes operating in provincial towns and rural areas.
In all of these contexts, make sure your contact lists store the full international form +855 plus the local number without its initial 0.
Cambodia phone number formats (+855)
Landline: +855 AA XXX XXX · Mobile: +855 T[TT] XXX XXX[X]Cambodia’s telephone numbers are easiest to understand if you separate landlines and mobiles:
- • Landlines (fixed): Inside Cambodia you dial 0AA XXX XXX or 0AA XXX XXXX, where 0AA is the area code and AA identifies the province (for example 023 for Phnom Penh, 032 for Takeo, 033 for Kampot, 034 for Sihanoukville, 053 for Battambang, 063 for Siem Reap). International callers drop the 0 and dial +855 AA XXX XXX.
- • Mobile numbers: follow a pattern like 0TT AXX XXX[Y], where the digits after the leading 0 identify the operator (Smart, Metfone, Cellcard, etc.). Common prefixes include 010, 012, 015, 016, 069, 081, 088, 097 and others. Most mobile NSNs are 8 digits long after +855, but some operator ranges use 9-digit NSNs, so a full number can look like 088 234 5678.
- • NSN length: the national significant number (digits after +855) is typically 8 or 9 digits depending on whether the number is an older 8-digit block or a newer extended range.
- • Special & short codes: 3-digit codes such as 117, 118, 119 and 115 are reserved for emergency and public service hotlines.
For CRM normalisation: strip spaces and punctuation, make sure numbers reduce to 0 + 8–9 digits for domestic use, then convert to +855 plus 8–9 digits (dropping the 0) for international format.
Sample Cambodia numbers
Illustrative onlyDomestic: 023 213 456 – 0 + 23 area code (Phnom Penh) + 6-digit subscriber.
Domestic: 063 760 987; area code 063 corresponds to Siem Reap province.
Domestic: 010 234 567; prefix 010 identifies the operator, followed by a 6-digit subscriber number.
Domestic: 088 234 5678; some newer ranges use 9-digit NSNs for extra capacity.
How to dial Cambodia (+855)
1. From the USA or Canada
To call Cambodia from North America, use the international exit code 011, then the country code 855 and the Cambodian national number without its leading 0.
- Dial 011 – US/Canada exit code.
- Dial 855 – Cambodia’s country code.
- Dial the national number (8–9 digits, no 0 in front).
Example (Chicago → Phnom Penh office 023 213 456): 011 855 23 213 456.
2. From the UK, EU or most other countries
In most of Europe, the Middle East and Asia, you start with 00 as the international prefix, then dial 855 and the Cambodian number without the trunk 0.
- Dial 00 – international access code.
- Dial 855 – Cambodia country code.
- Dial the national number (drop the leading 0).
Example (London → mobile 010 234 567): 00 855 10 234 567.
3. Dialing within Cambodia
- Landlines: dial full format 0AA XXX XXX or 0AA XXX XXXX even within the same city (for example 023 213 456 in Phnom Penh).
- Mobiles: dial the entire mobile such as 010 234 567 or 088 234 5678; mobiles are not tied to geographic area codes.
- International from Cambodia: use 00 plus the foreign country code and number. Some operators also offer 001, 007 or 008 gateways for international calls, which may have different tariffs.
- Short codes: emergency and service codes like 117, 118, 119 and 115 are dialed without any prefix.
Example (Phnom Penh mobile → Bangkok landline +66 2 123 4567): 00 66 2 123 4567, or an operator-specific variant like 001 66 2 123 4567.
Normalisation tip: a “clean” Cambodian number in your database should look like +855XXXXXXXX or +855XXXXXXXXX. If there is still a 0 immediately after +855, you can safely remove it.
Time in Cambodia – Indochina Time (ICT, UTC+7)
Cambodia uses a single national time zone: Indochina Time (ICT) with an offset of UTC+07:00. The official IANA time zone identifier is Asia/Phnom_Penh. Cambodia does not observe daylight saving time, so the UTC offset stays the same all year.
In practical terms, Cambodia is usually 7 hours ahead of UTC, about 6 hours ahead of central Europe during European winter, and 11–12 hours ahead of New York depending on US daylight saving time. When scheduling calls with Phnom Penh or Siem Reap, treat local time as a fixed GMT+7 with no seasonal change.
For apps and calendar systems, always pick the exact zone Asia/Phnom_Penh instead of a generic “GMT+7” label. That avoids confusion if other GMT+7 countries ever change their rules while Cambodia keeps a constant offset.
Cambodia vs other major time zones
| City / region | Time zone | Offset vs Phnom Penh |
|---|---|---|
| Phnom Penh | ICT (UTC+7) | Reference |
| Bangkok / Ho Chi Minh City | ICT (UTC+7) | Same time |
| Beijing / Singapore | UTC+8 | +1 hour |
| London (winter) | GMT (UTC+0) | −7 hours |
| Berlin (winter) | CET (UTC+1) | −6 hours |
| New York (standard) | ET (UTC−5) | −12 hours |
For many teams, early afternoon in Cambodia overlaps with morning in Europe and late evening in the Pacific region, but is usually outside regular business hours in North America.
Emergency numbers in Cambodia
Emergency services in Cambodia use several short 3-digit numbers, coordinated by the Telecommunication Regulator of Cambodia. The core national codes are 117 for police, 118 for fire and 119 for ambulance and general medical emergencies. Additional service numbers such as 115 are used for infectious disease reporting, and 1293 for mental health support related to public-health situations.
Police
117
Dial 117 for police assistance, crimes, traffic incidents or threats to personal safety anywhere in Cambodia.
Fire & rescue
118
Use 118 to report fires, explosions and other incidents requiring the fire brigade and rescue operations.
Ambulance / medical
119
Call 119 for ambulance dispatch and urgent medical emergencies. Some operators route English-speaking support to specific lines in major cities.
Health & public services
115 / 1293
Number 115 is used for reporting infectious diseases to the Ministry of Health, while 1293 provides mental-health counselling in specific public-health contexts.
Emergency response times and English-speaking availability can vary outside major cities. Travellers should also keep the number of their hotel, tour operator and embassy or consulate saved for backup.
Examples: calling +855 numbers
US (Los Angeles) → Phnom Penh office (fixed)
Office number in Cambodia: 023 213 456.
- Remove the trunk 0 → 23 213 456.
- From the US, dial exit code 011.
- Add country code 855 and the cleaned number.
Result: 011 855 23 213 456
France (Paris) → Cambodia mobile
Mobile displayed as: 088 234 5678.
- Strip the leading 0 → 88 234 5678.
- From France, dial 00 as the international prefix.
- Dial 855, then 88 234 5678.
Result: 00 855 88 234 5678
Inside Cambodia – mobile → Siem Reap hotel
Hotel landline in Siem Reap: 063 760 987.
- From any Cambodian mobile, dial 063 760 987 directly.
- No extra 0, area code or prefix is added beyond the printed number.
International callers use: +855 63 760 987.
Cambodia country code +855 – FAQ
How many digits are in a Cambodian phone number?
For ordinary landlines and mobiles, the national significant number in Cambodia is usually 8 or 9 digits long after +855. Domestically you see 0 plus 8–9 digits, for example 023 213 456 or 088 234 5678.
Do I need to dial a 0 before Cambodian numbers?
Inside Cambodia, yes – you always start with 0 for landlines and mobiles (0AA for area codes, 0TT for mobile operators). From outside Cambodia, you must remove that 0 and dial +855 plus the remaining digits.
What do Cambodia mobile numbers look like?
Mobile numbers start with 0 followed by an operator prefix such as 10, 12, 15, 69, 81, 88, 97, etc. A full number might be 010 234 567 or 088 234 5678. In international format you drop the 0, giving +855 10 234 567 or +855 88 234 5678.
What emergency number should I use in Cambodia?
The main emergency codes are 117 (police), 118 (fire) and 119 (ambulance). You may also see 115 public-health hotlines and other ministry short codes. Save the relevant numbers when you arrive and ask your hotel which ones they recommend.
Does Cambodia observe daylight saving time?
No. Cambodia stays on Indochina Time (ICT, UTC+7) throughout the year. The time difference with other countries changes only when they switch between standard time and summer time.
Are +855 numbers used for WhatsApp and other apps?
Yes. Residents and businesses in Cambodia typically register messaging apps with their mobile number in the form +855XXXXXXXX or +855XXXXXXXXX. Always store numbers in full international format for the best chance of matching across apps and devices.
Download the Cambodia (+855) dialing & time zone cheat sheet
Get a one-page PDF summarising Cambodia’s +855 country code, landline area codes, mobile prefixes, emergency numbers and Indochina Time (UTC+7). Useful for travel desks, support teams and sourcing managers working with Cambodian partners.