How to Call Indonesia from the US

To call Indonesia from the US, dial 011 + 62 + area code (drop the leading 0) + local number.

Jakarta landline example: 011-62-21-XXXX-XXXX (domestic format: 021-XXXX-XXXX).

Indonesian mobile example: 011-62-812-345-6789 (domestic format: 0812-345-6789).

The 011 is the US exit code. The 62 is Indonesia’s country code. Every Indonesian number — landline and mobile — drops its leading 0 when dialed internationally.

How to dial Indonesia from the US

The formula never changes regardless of city or carrier:

1. Dial 011 — the US international exit code. Required from every US landline. On a US mobile you can substitute + (long-press 0 on the keypad).
2. Dial 62 — Indonesia’s country code, assigned by the ITU.
3. Dial the area code or mobile prefix without its leading 0. Jakarta’s domestic area code is 021; internationally it is 21. A mobile starting with 0812 becomes 812.
4. Dial the local subscriber number in full.
5. Press call / send.

The complete string: 011 62 <area code or prefix without leading 0> <local number>.

From a US mobile saved in E.164 format, replace 011 with +: +62 21 XXXX-XXXX for Jakarta. Saving contacts in + format ensures the number works without modification when you roam internationally.

Indonesian area codes by major city

Indonesian landlines use geographic area codes. All are written with a leading 0 inside Indonesia; drop that 0 when calling from the US.

City	Domestic code	Dial from US
Jakarta	021	011-62-21-XXXX-XXXX
Surabaya	031	011-62-31-XXX-XXXX
Bandung	022	011-62-22-XXX-XXXX
Medan	061	011-62-61-XXX-XXXX
Semarang	024	011-62-24-XXX-XXXX
Yogyakarta	0274	011-62-274-XXX-XXX
Denpasar (Bali)	0361	011-62-361-XXX-XXX
Makassar	0411	011-62-411-XXX-XXX
Palembang	0711	011-62-711-XXX-XXX

Major city landlines have 7–8 digit local numbers. Yogyakarta, Denpasar, Makassar, and Palembang use 3-digit area codes; Jakarta and most large Java cities use 2-digit codes.

Mobile numbers do not use geographic area codes — they use carrier prefixes that all begin with 8 after the country code. See the mobile section below.

How Indonesian numbering works

Indonesia’s numbering plan is administered by the Ministry of Communication and Informatics (Kominfo). The plan separates fixed-line geographic numbers (area code + subscriber) from mobile numbers (carrier prefix + subscriber).

Fixed-line structure: 0 + area code (1–3 digits) + local number (5–8 digits). Large urban lines (Jakarta, Surabaya) use 8-digit local numbers. Smaller cities and towns use 7-digit or shorter local numbers.

Mobile structure: 0 + carrier prefix (3 digits starting with 8) + subscriber (7–9 digits). Total domestic length is 10–13 digits including the leading 0. Strip that 0 for international dialing.

Major mobile operators and their primary prefixes:

• Telkomsel (largest by subscribers): 0811–0823, 0851–0853
• Indosat Ooredoo Hutchison: 0814–0816, 0855–0858
• XL Axiata: 0817–0819, 0859, 0877–0878
• Smartfren: 0887–0889

All mobile prefixes start with 8 after dropping the leading 0. That initial 8 is the reliable signal you are dialing a mobile, not a landline area code.

Time zones — Indonesia spans 3 zones

Indonesia crosses three time zones, none of which observes daylight saving time. The US observes DST twice yearly, so the offset between the two countries shifts by one hour in March and November.

Zone	Name	UTC	Coverage	Ahead of US ET	Ahead of US PT
WIB	Western Indonesian Time	+7	Jakarta, Java, Sumatra, W. Kalimantan	+12h (EST) / +11h (EDT)	+15h (PST) / +14h (PDT)
WITA	Central Indonesian Time	+8	Bali, Sulawesi, E. Kalimantan, Lesser Sundas	+13h (EST) / +12h (EDT)	+16h (PST) / +15h (PDT)
WIT	Eastern Indonesian Time	+9	Maluku, Papua	+14h (EST) / +13h (EDT)	+17h (PST) / +16h (PDT)

Roughly 80% of Indonesia’s population — including all of Java and Sumatra — lives in the WIB zone.

Practical window for business calls: Indonesian office hours run roughly 08:00–17:00 WIB. That corresponds to 20:00–05:00 US Eastern (previous day/same day), making real-time business calls from the US East Coast difficult during standard hours. US West Coast teams have an even larger gap.

The practical approach for US-based teams calling Jakarta: schedule calls at 08:00–09:00 WIB (20:00–21:00 ET the previous evening) or use asynchronous voice messages and schedule a weekly live slot.

US to Indonesia calling costs

Three cost tiers apply to US-to-Indonesia calls:

Carrier per-minute (no international plan): AT&T charges $0.20–$1.75/min to Indonesian numbers; Verizon $0.49–$2.00/min; T-Mobile $0.06–$3.00/min. Rates vary by destination type (landline vs mobile) and time of day.

Carrier international add-on packages: Most major US carriers offer monthly add-ons ($10–$25/month) that reduce per-minute rates to the $0.10–$0.50 range for Southeast Asian destinations. Suitable if you call Indonesia more than 30 minutes per month.

VoIP per-minute rates: VoIP providers including DialPhone charge $0.02–$0.35/min to Indonesian landlines and mobiles — typically 80–90% less than carrier walk-up rates. No monthly commitment required.

See DialPhone pricing for current Indonesia rates included with each plan, and the free trial to test without a credit card.

Calling Indonesian mobile vs landline — and WhatsApp dominance

The dialing formula is identical for landlines and mobiles: 011 + 62 + number without leading 0. The difference is in the prefix — area code for landlines, carrier prefix for mobiles.

Indonesian mobile penetration exceeds landline penetration by a wide margin. Most Indonesian businesses and professionals use a mobile as their primary contact number. When a contact shares a number starting with 08 (domestic) or +62 8 (international), that is a mobile.

WhatsApp is the dominant messaging and voice-call platform in Indonesia. Penetration among smartphone users exceeds 90%. For informal outreach and consumer contacts, a WhatsApp call — free over data — is often both cheaper and more likely to be answered than a PSTN call.

For formal business calls (B2B sales, procurement, vendor negotiations), a standard VoIP or carrier call to the registered business number is more professional. US-originating calls through a STIR/SHAKEN-compliant provider like DialPhone carry caller-ID attestation, which reduces the chance your number is flagged as spam on the Indonesian end. See STIR/SHAKEN explained for how call authentication works.

SMS to Indonesia — and the US–Indonesia business context

SMS from the US to Indonesian numbers uses the same 011-62-prefix format. Standard US carrier SMS rates to Indonesia run $0.20–$0.50 per message. VoIP SMS plans reduce this to a few cents per message.

Most Indonesian recipients read business SMS within minutes — WhatsApp Business is the preferred channel for B2B messaging, but standard SMS reaches any mobile without requiring an app.

US–Indonesia trade context: Indonesia is the world’s largest palm oil producer, a top-10 exporter of coal and nickel, a major electronics assembly hub, and the source of significant global textile and rubber supply. Bali alone handled over 6 million international tourist arrivals in 2024, with US visitors among the top 10 nationalities. US companies in agriculture, logistics, hospitality, and manufacturing regularly need reliable US-to-Indonesia calling infrastructure.

For teams making frequent B2B calls to Indonesian numbers, a DialPhone business phone plan covers Indonesia in the per-minute pool and includes STIR/SHAKEN attestation. The AI receptionist can also receive Indonesian-timezone callbacks and log them for morning review. For porting an existing number, see the number porting guide.

FAQ

Calling Indonesia FAQ

What is the country code for Indonesia? +

Indonesia's country code is +62. From a US landline, you reach it by dialing the US exit code 011 first, giving the prefix 011-62. From a US mobile that supports E.164 dialing, you can substitute + for 011 and dial +62 directly.

How do I dial a Jakarta number from the US? +

Jakarta's area code inside Indonesia is 021. When calling from the US, drop the leading 0 — the area code becomes 21. A full Jakarta dial string looks like: 011-62-21-XXXX-XXXX.

If you see a Jakarta number written in international format as +62 21 XXXX-XXXX, replace the + with 011 when dialing from a US landline, or dial the + directly from a US mobile.

How do I call an Indonesian mobile from the US? +

Indonesian mobile numbers start with 08 in domestic format. Drop the leading 0 when calling internationally. A domestic number 0812-345-6789 becomes 011-62-812-345-6789 from the US.

All Indonesian mobile numbers start with 8 after the country code — that digit distinguishes mobile lines from landlines, which use geographic area codes.

Does Indonesia observe daylight saving time? +

No. Indonesia does not observe daylight saving time in any of its three time zones. This makes scheduling recurring calls with Indonesian contacts more predictable — the offset from your US time zone stays constant year-round, unlike the US which shifts twice annually.

What time zone is Jakarta in, and how far ahead is it from the US? +

Jakarta uses Western Indonesian Time (WIB), which is UTC+7. That puts Jakarta 12 hours ahead of US Eastern time and 15 hours ahead of US Pacific time in standard conditions.

Indonesia has no DST, but the US does, so the offset shifts by one hour during US daylight saving periods. When the US is on EDT (UTC-4), Jakarta is 11 hours ahead; when the US reverts to EST (UTC-5), Jakarta is 12 hours ahead.

Is WhatsApp a good way to reach Indonesian contacts? +

Yes. WhatsApp is the dominant personal messaging and voice-call app in Indonesia, with penetration exceeding 90% among smartphone users. For informal contacts and consumer outreach, a WhatsApp call (free over data) is often the fastest way to connect.

For formal business calls — sales, procurement, vendor negotiations — a VoIP or carrier call to a landline or mobile is more professional and STIR/SHAKEN-authenticated from the US side, reducing the chance your number is flagged as spam.

How much does it cost to call Indonesia from the US? +

US carrier rates without an international plan range from $0.25 to $3.00 per minute depending on carrier and destination type. AT&T charges roughly $0.20–$1.75/min, Verizon $0.49–$2.00/min, and T-Mobile $0.06–$3.00/min to Indonesian numbers.

VoIP providers and calling apps (Skype, Rebtel, DialPhone) charge $0.02–$0.35/min. WhatsApp calls are free when both parties have data. For regular business calls to Indonesia, a VoIP plan typically cuts costs by 80–90% versus carrier per-minute rates.

Why doesn't my call to Indonesia connect? +

The most common reasons are: leaving the leading 0 on the area code or mobile prefix (dial 011-62-21, not 011-62-021), forgetting the 011 exit code entirely, international calling being disabled on your US line by default, or dialing a non-geographic Indonesian number (1xx emergency codes, 08xx service numbers) that cannot be reached internationally.

Check that international outbound calling is enabled in your carrier or VoIP admin panel, then redial in the strict 011-62-area-code-local format.

Related guides

• How to call the UK from the US — sibling guide with the same step-by-step format
• Number porting guide — move your existing number to DialPhone
• STIR/SHAKEN explained — how caller-ID authentication works on US outbound calls
• DialPhone business phone
• DialPhone pricing