phones Country calling codes · EN / 中文
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Cambodia +855

International code · Asia

How to dial

Calling from abroad +855 XX XXX XXXX

Dial +855, then the local number. Drop the leading trunk prefix 0. Generate the full number →

For domestic long distance dial 0 first, then the area code. Local calls: dial directly.

Mobile length
8–9 digits
Mobile prefixes
XX XXX XXXX
International format
+855 XX XXX XXXX
Domestic trunk
0

Sign-up availability

What to expect when signing up for these services with a physical SIM from this country:

ChatGPT Works
Claude Works
WhatsApp Works
Telegram Works
LINE Works
WeChat Works
X Works
TikTok Works
Gemini Works

Applies to every platform: VoIP / virtual numbers and heavily-reused number pools get rejected. Physical SIM only.

Checked 2026-09-12. Platform region policies and number-range allocations change — always confirm against each platform’s official supported-regions list and the carrier’s notices.
4 sources
help.openai.com/articles/7947663www.anthropic.com/supported-countriessupport.google.com/gemini?p=gemini_web_availabilitywww.mappr.co/tiktok-bans-by-country

How to read a number

+855111234567

+855Country code
Cambodia.
11Prefix
The first two digits of a Cambodian mobile number are an operator code, not an area code. 11 is registered to Cellcard.
1234567Remaining 7 digits
The subscriber number.
This section checked 2026-10-31.
3 sources
www.trc.gov.kh/en/resources/mobile-prefixeswww.trc.gov.kh/en/resources/telecom-statisticswww.itu.int/dms_pub/itu-t/oth/02/02/T02020000230001MSWE.doc

Number ranges & quality

RangeTypeNotes
0 + two-digit operator code + 6 or 7 digits Mobile carrier The first two digits of a Cambodian mobile number are an operator code, not an area code. The regulator TRC's mobile prefix page lists every code under its operator: Cellcard has 011, 012, 014, 017, 061, 076, 077, 078, 085, 089, 092, 095 and 099; Metfone has 031, 060, 066, 067, 068, 071, 088, 090 and 097; Smart has 010, 015, 016, 069, 070, 081, 086, 087, 093, 096 and 098; Seatel has 018. The prefixes the TRC stars — 076, 031, 071, 088, 097, 018 and 096 — are followed by 7 digits, the rest by 6, so without the leading 0 a Cambodian mobile number is 8 or 9 digits.
Intl SMSStable
Virtual-number riskLow
ID requiredRegistration is mandatory (all SIMs recorded in a national database since February 2023); foreigners use a passport, Smart’s online registration includes a face scan, max 5 Smart SIMs per ID.

Physical SIMs can sign up without issues; foreign visitors usually need to register with a passport.

Carriers & prefixes

Mobile prefixes by carrier.

Number portability status unverified.

Porting rules in full

We found nothing from the TRC or the Ministry of Posts and Telecommunications saying whether numbers can be ported, so this is marked unverified. The TRC's prefix page is organised by operator and says nothing about porting; for now each prefix maps to one operator.

For scale, the TRC reports 21,716,654 mobile subscriptions in 2025 (123.55% penetration) and four mobile licences.

  • Cellcard Mobile carrier

    011, 012, 014, 017, 061, 076~078, 085, 089, 092, 095, 099

    Holds the most prefixes. Ranges from the TRC's mobile prefix page (076 takes 7 digits after it).

  • Metfone Mobile carrier

    031, 060, 066~068, 071, 088, 090, 097

    Ranges from the TRC's page (031, 071, 088 and 097 take 7 digits after them).

  • Smart Mobile carrier

    010, 015, 016, 069, 070, 081, 086, 087, 093, 096, 098

    Ranges from the TRC's page (096 takes 7 digits after it).

  • Seatel Mobile carrier

    018

    The fourth operator on the TRC's prefix page, with just the 018 prefix (7 digits after it).

This section checked 2026-10-17.
3 sources
www.trc.gov.kh/en/resources/mobile-prefixeswww.trc.gov.kh/en/resources/telecom-statisticswww.itu.int/dms_pub/itu-t/oth/02/02/T02020000230001MSWE.doc

SIM cards & keeping a number

Cambodian SIMs must be registered: since February 2023 the law requires every SIM to be recorded in the Ministry of Posts and Telecommunications’ national database, and the regulator (TRC) requires ID checks before activation, with unregistered or multi-identity SIMs to be deactivated (Light Reading, May 2024). Foreigners use a passport.

Read more

Prepaid validity comes from top-ups, and the window to restore expired credit is short (only 7 days at Smart), so these SIMs aren’t suited to keeping a number long-term from abroad.

Smart prepaid

Local prepaid
Network
Smart Axiata’s own network (MNO)
Price
Official top-up table: $1.5 = 8 days, $2 = 15 days, $4 or $5 = 30 days, $6 = 35 days, $10 = 70 days, $20 = 100 days
Keeping the number
Smart terms: top-up funds are valid for a set active period and expire unused at the end; top up within 7 days of expiry to restore them. How long after expiry the number is deactivated isn’t stated in the terms (third-party reports say 90 days)
ID check
Official site: scan an original passport or Cambodian ID plus a face scan (eKYC), or visit a Smart Shop; max 5 Smart SIMs per ID; mismatched details can mean a 14-day suspension
SMS & calls
A normal Cambodian number. Official SmartRoam page: China is covered (US$10 spend-cap tier); dial *1700*313# to turn on roaming. The cost of receiving SMS in China isn’t listed

Pros

  • Official table shows exactly how long each top-up lasts
  • Foreigners can register online with a passport scan and face scan

Watch out

  • The largest top-up ($20) lasts 100 days; expired credit can’t be restored after 7 days
  • How long until the number is deactivated isn’t officially stated

Where to buy: smart.com.kh

6 sources
www.smart.com.kh/about/terms-and-conditionswww.smart.com.kh/sim-registrationwww.smart.com.kh/sim-guidelineswww.smart.com.kh/services/smartroamwww.lightreading.com/regulatory-politics/cambodian-telco-watchdog-warns-against-sale-of-unregistered-sim-cardscambodiaexpatsonline.com/ask-the-expats-questions-answers/when-will-smart-sim-card-expire-t22761.html

Cellcard prepaid

Local prepaid
Network
Cellcard’s own network (MNO)
Price
SIM and top-up amounts vary
Keeping the number
Cellcard terms: prepaid main balance is valid for the active period and expires after it; top up within 180 days of expiry to restore it. How long until the number is recycled isn’t stated
ID check
ID registration under TRC rules; foreigners use a passport
SMS & calls
A normal Cambodian number; cost of receiving SMS while roaming in China not verified

Pros

  • Expired balance restorable within 180 days — more forgiving than Smart

Watch out

  • Number recycling period not officially stated
  • Roaming SMS pricing not verified

Where to buy: cellcard.com.kh

2 sources
www.cellcard.com.kh/en/terms-conditionswww.lightreading.com/regulatory-politics/cambodian-telco-watchdog-warns-against-sale-of-unregistered-sim-cards

From user and blogger reports; platform risk rules change often — treat as a guide only. This section checked 2026-09-15.

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