mathematics

Telephone numbers in Indonesia

Telephone numbers in Indonesia is a mathematics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Telephone numbers in Indonesia rather than just read about it. In short: Telephone numbers in Indonesia have different systems for landlines and mobile phones: landlines use area codes, while mobile phones do not. For landline area codes, the digit "0" is added before the area code when dialing domestic long distance from within Indonesia, but is always omitted when calling from abroad.

Key takeaways

Telephone numbers in Indonesia belongs to mathematics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Telephone numbers in Indonesia to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Telephone numbers in Indonesia from memory before moving on to harder problems.

Reference excerpt

Telephone numbers in Indonesia have different systems for landlines and mobile phones: landlines use area codes, while mobile phones do not. For landline area codes, the digit "0" is added before the area code when dialing domestic long distance from within Indonesia, but is always omitted when calling from abroad. Instead, callers would use the Indonesian country code +62, followed by the area code, without the "0". Domestic phone numbers in large cities have 8 digits, and in other areas 7 digits. Mobile phone numbers have 9 to 11 digits for postpaid services, depending on the operator, whereas prepaid services have 10 to 12 digits, determined by the operator. Until October 1999, East Timor was included in the Indonesian telephone numbering plan, using the area codes 0390 (for Dili) and 0399 (for Baucau). To make a phone call to Indonesia from abroad, the following formats are used: For calls to landlines, callers dial +62, followed by the area code and subscriber's number, omitting the '0', hence a number in Jakarta would be dialled as +62 21-xxxx-xxxx. For calls to mobile wireless phone (GSM) from abroad, callers dial +62, followed by the subscriber's number, omitting the '0', hence +62 083822117064

Overview

Numbers in business contact information On business cards and other contact information, telephone numbers might be listed as "HP" or "hunting". "HP" is an abbreviation for "hand phone" or mobile phone and is pronounced "hah péh". Hand phones might also be referred to as pon-sel (short form of telepon seluler) or telepon genggam ("hold-in-the-hand telephone"). Hunting refers to line hunting, an office line in which multiple individual lines are connected so that an incoming call can roll over to another line if the first line is busy. This permits only one number to be published.

Operators International call operators:

PT Indosat: 101 PT Telkom: 107 Domestic call operators: 100 International phone number information: 102 Local phone number information: 108 Phone number information in another area:

106 <Area code> 108.

International Direct Dialing Prefix PT Atlasat Solusindo (SLI-01018) : 01018 PT Gaharu Sejahtera (SLI-01019) : 01019 PT XL Axiata Tbk (XL): 01000 (VoIP) PT Indosat Tbk: 001, 008 or 01016, 01088, 01089 (VoIP). PT Telkom: 007 or 01017, 01052 (VoIP). PT Smartfren Telecom: 01033 ou 01068 (VoIP). Axis: 01012 (VoIP). To make an International phone call from Indonesia, you should use the following format: <IDD prefix> <country code> <area code> <phone number>

Fixed CDMA Wireless Numbering for FWA CDMA follows the PSTN rules (area code)-XXXX-XXXX. Which X depends on the empty slot of the numbering plan, and may vary between cities. But mostly, for Jakarta (and some other big cities);

PT Bakrie Telecom Tbk (Esia): (area code) 9XXX-XXXX, (021) 80XX-XXXX, (021) 83XX-XXXX PT Telkom Tbk (TelkomFlexi): (021) 70XX-XXXX, (021) 68XX-XXXX, (area code) 54XX-XXX, (area code) 70XX-XXX, (area code) 80XX-XXX, (area code) 81XX-XXX, (area code) 68XX-XXX, (area code) 3XXX-XXXX PT Indosat Tbk (StarOne): (021) 30XX-XXXX, (031) 60XX-XXXX, (area code) 61XX-XXX, (area code) 62XX-XXX, (area code) 63XX-XXX, (area-code) 90XX-XXXX PT Mobile-8 Telecom Tbk (Fren & Hepi): (area code) 50XX-XXXX, (area code) 21XX-XXXX, (area code) 31XX-XXXX

CDMA Mobile Wireless PT Smartfren Telecom : 0887-XXXX-XXXX, 0888-XXXX-XXXX, 0889-XXXX-XXXX PT Sampoerna Telekomunikasi Indonesia (Ceria/Net1): 0827-XXXX-XXXX, 0828-xxxx-xxxx PT Smart Telecom (Smart): 0881-XXXX-XXXX, 0882-XXXX-XXXX, 0883-XXXX-XXXX, 0884-XXXX-XXXX, 0885-XXXX-XXXX, 0886-XXXX-XXXX

GSM Mobile Wireless PT Indosat IM3 (Prepaid and Postpaid) prefix: 0814, 0815, 0816, 0855, 0856, 0857, 0858. 3 Indonesia (merged with Indosat) prefix: 0895, 0896, 0897, 0898, 0899. PT Telkomsel Telkomsel Halo (Postpaid), Simpati (Prepaid), and by.U (MVNO) prefix: 0811, 0812, 0813, 0821, 0822, 0823, 0851, 0852, 0853. PT XLSmart Telecom Sejahtera Tbk 'XL Prepaid', XL Prioritas (Postpaid), and LIVE.ON (MVNO) prefix: 0817, 0818, 0819, 0859, 0877, 0878. AXIS (acquired by XL) prefix: 0831, 0832, 0833, 0838. Smartfren and Smartfren Power Up (MVNO) prefix: 0881, 0882, 0883, 0884, 0885, 0886, 0887, 0888, 0889.

Satellite Phone PT Telkom

Emergency number In Indonesia, emergency numbers are mostly using 11x format

Police: 110 Ambulance: 118 or 119 Fire: 113 Search and Rescue (BASARNAS): 115 Mobile and satellite phone: 112

Calling formats To call in Indonesia, the following format is used: xxx-xxxx Calls within an area code +62 yyy-xxx-xxxx Calls inside Indonesia in city centers +62 yyy-xxxx-xxxx Calls from outside Indonesia +62 8nn-xxxx-xxxxx Calls to mobiles from outside Indonesia

Area 2 These are area codes for the provinces of Jakarta, Banten, West Java, Yogyakarta, and Central Java.

Jakarta All areas—021

Banten Tangerang, South Tangerang—021 Lebak—0252 Pandeglang—0253 Cilegon, Serang—0254

West Java Bekasi, Depok, parts of Bogor Regency—021 Bandung, Cimahi, parts of Sumedang (Jatinangor)—022 Cirebon—0231 Kuningan—0232 Majalengka—0233 Indramayu—0234 Bogor City, parts of Depok (Sawangan), parts of Bogor Regency—0251 Subang—0260 Sumedang—0261 Garut—0262 Cianjur—0263 Purwakarta—0264 Tasikmalaya, Ciamis, Banjar, Pangandaran Regency—0265 Sukabumi—0266 Karawang—0267

Central Java Semarang, parts of Semarang Regency—024 Surakarta, Sragen, Karanganyar, Sukoharjo, parts of Boyolali—0271 Klaten—0272 Wonogiri—0273 Purworejo—0275 Boyolali—0276 parts of Cilacap—0280 Banyumas, Purbalingga—0281 Cilacap—0282 Tegal, Brebes—0283 Pemalang—0284 Pekalongan, Batang—0285 Banjarnegara, Wonosobo—0286 Kebumen—0287 Bumiayu—0289 Kudus, Jepara—0291 Grobogan—0292 Magelang, Temanggung—0293 Kendal, parts of Batang (Gringsing)—0294 Pati, Rembang—0295 Blora—0296 Karimun Jawa—0297 Salatiga, parts of Semarang Regency, parts of Boyolali—0298

Yogyakarta All areas—0274

Area 3 These are area codes for the provinces of East Java, Bali, West Nusa Tenggara, and East Nusa Tenggara.

East Java Surabaya, Gresik, Sidoarjo, Bangkalan—031 Mojokerto, Jombang—0321 Lamongan—0322 Sampang—0323 Pamekasan—0324 Bawean—0325 Masalembu Islands—0326 Kangean—0327 Sumenep—0328 Jember—0331 Bondowoso—0332 Banyuwangi—0333 Lumajang—0334 Probolinggo—0335 parts of Jember—0336 Situbondo—0338 Malang, Batu—0341 Blitar—0342 Pasuruan—0343 Madiun, Magetan, Ngawi—0351 Ponorogo—0352 Bojonegoro—0353 Kediri—0354 Tulungagung, Trenggalek—0355 Tuban—0356 Pacitan—0357 Nganjuk—0358

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Telephone numbers in Indonesia

Start with the simplest possible case. Write down what Telephone numbers in Indonesia claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In mathematics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Telephone numbers in Indonesia before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Telephone numbers in Indonesia ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Telephone numbers in Indonesia

In research: Telephone numbers in Indonesia appears in mathematics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Telephone numbers in Indonesia in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Telephone numbers in Indonesia is common in secondary-school and first-year university syllabi. It links to neighbouring topics Indonesia communications-related lists, Telecommunications in Indonesia, Telephone numbers by country, so understanding it makes those chapters shorter.
In everyday life: Look for Telephone numbers in Indonesia outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Telephone numbers in Indonesia in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Telephone numbers in Indonesia means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Telephone numbers in Indonesia out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Telephone numbers in Indonesia in simple terms?

Why does Telephone numbers in Indonesia matter?

Because it connects several mathematics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Telephone numbers in Indonesia?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Telephone numbers in Indonesia.