mathematics

List of dialling codes in Germany

List of dialling codes in Germany 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 List of dialling codes in Germany rather than just read about it. In short: The telephone numbering plan of Germany is an open numbering plan, with a variable number of digits in the area code (German: Vorwahl) as well as in the subscribers' directory telephone number. Area codes in Germany have two to five digits.

Key takeaways

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

Reference excerpt

The telephone numbering plan of Germany is an open numbering plan, with a variable number of digits in the area code (German: Vorwahl) as well as in the subscribers' directory telephone number. Area codes in Germany have two to five digits. The prefix digit 0 (trunk prefix) must be dialed when calling between numbering plan areas within Germany. When calling via fixed-line networks within the same area, the area code is not required. In general, shorter area codes are assigned to larger cities, and longer area codes to smaller localities. Subscriber telephone numbers are usually inversely in size: those in larger cities have seven or eight digits, while those in smaller places may have as few as three digits. Area codes are grouped into eight geographic dialing regions determined by the first digit (2–9). Area codes beginning with 2 are found in the west, those with 3 in the east, those with 4 in the north, those with 5 in the north central part, those with 6 in the south-central part, those with 7 in the southwest, those with 8 in the south, and the 9s are found in the southeast. Prefixes starting with 1 are special numbers, such as mobile telephones (15, 16, 17), shared-cost services (180), televoting numbers (13), and 10 for dial-around services. The former codes of 130 for freephone numbers and 190 for premium-rate numbers are moved to 800 and 900 to meet international standards. 700 is used for personal national phone numbers. The ITU country code in the E.164 international numbering plan is 49. Outgoing calls to international destinations are dialed with the prefix 00, followed by the destination country code, area code, and telephone number.

General prefixes Telephone country code: 49 International call prefix: 00 Trunk prefix: 0

1 Prefix 1 is used for special numbers, and is not tied to a geographic area.

10 10 call-by-call (dial-around-services – alternative carrier)

11 11 formerly value-added services 115 Public service number for German administration

12 12 innovative services 12-12 Web.de, Karlsruhe, between €0.13 and €1.86 per minute 12-230 tesion, Stuttgart 12-3000 3U Telecom, Marburg 12-3131 BBA Netkom, Hamburg 12-3333 BBA Netkom, Hamburg 12-3456 CommAssist, Lübeck

13 13 voting and lottery numbers 130 formerly toll-free numbers, now unassigned (now 800) 137 Mass traffic services 1371 €0.14 per call 1372 €0.14 per minute 1373 €0.14 per minute 1374 €0.14 per minute 1375 €0.14 per call 1376 €0.25 per call 1377 €1.00 per call 1378 €0.50 per call 1379 €0.50 per call 138 T-VoteCall €0.14 per minute

14 14 unassigned

15 15 mobile phones 150 reserved for Group 3G/Quam 151 T-Mobile 152 reserved for Vodafone 1520 Vodafone 1521 Lycamobile 1522 Vodafone 1523 Vodafone 1525 Vodafone 155 reserved for E-Plus 156 reserved for Mobilcom 157 reserved for E-Plus 1570 vistream 1573 ALDITalk 1577 E-Plus 1579 sipgate 159 reserved for O2 Germany

16 16 mobile phones, Trunked radio system, Pager 160 T-Mobile 161 formerly analog C-Netz 162 Vodafone 163 E-Plus 164 Cityruf (e*message) 165 formerly Quix 166 Telmi (e*message) 167 Trunked radio systems 1672 Dolphin Telecom 168 Scall (e*message) 169 Cityruf, Scall, Skyper (e*cityruf, e*message, e*skyper)

17 17 mobile phones 170 T-Mobile 171 T-Mobile 172 Vodafone 173 Vodafone 174 Vodafone 175 T-Mobile 176 O2 Germany 177 E-Plus 178 E-Plus 179 O2 Germany

18 18 international virtual private networks (IVPNs) and shared-cost services 180 shared-cost services 1801 €0.039 per minute 1802 €0.06 per connection 1803 €0.09 per minute 1804 €0.20 per connection 1805 €0.14 per minute 181 international virtual private networks (IVPNs) 182 closed user groups 183 closed user groups 1835 DB Netz (Deutsche Bahn) - User group for GSM-R when calling from German Telephone Network 184 closed user groups 185 closed user groups 186 closed user groups 187 closed user groups 188 closed user groups 1888 IVBB (Informationsverbund Berlin-Bonn) 189 closed user groups

19 190 formerly premium-rate services, now unassigned (now 900) 191 online services 192 online services 193 online services 194 online services 1987 Routing numbers for (0)116xxx 1988 target network service identification for routing international toll-free value-added services (Freecall) 1989 routing numbers for outgoing services 199 network-internal traffic control

20 – Western Ruhrgebiet (Essen and surroundings) 201 Essen 202 Wuppertal 203 Duisburg 204 2041 Bottrop 2043 Gladbeck 2045 Bottrop-Kirchhellen 205 2051 Velbert 2052 Velbert-Langenberg (Rheinland) 2053 Velbert-Neviges 2054 Essen-Kettwig, Mülheim an der Ruhr-Mintard 2056 Heiligenhaus 2058 Wülfrath 206 2064 Dinslaken 2065 Duisburg-Rheinhausen 2066 Duisburg-Homberg (Rheinland) 208 Mülheim an der Ruhr/Oberhausen 209 Gelsenkirchen

21 – Düsseldorf and surroundings 210 2101 formerly Neuss and Kaarst (no longer valid) 2102 Ratingen 2104 Mettmann 211 Düsseldorf 212 Solingen 2129 Haan (Rheinland) 213 2131 Neuss, Kaarst 2132 Meerbusch-Büderich (Düsseldorf) 2133 Dormagen 2137 Neuss-Norf 214 Leverkusen 215 2150 Meerbusch-Lank-Latum 2151 Krefeld 2152 Kempen 2153 Nettetal-Lobberich 2154 Willich 2156 Willich-Anrath 2157 Nettetal-Kaldenkirchen/Brüggen 2158 Grefrath/Nettetal 2159 Meerbusch-Osterath 216 2161 Mönchengladbach 2162 Viersen 2163 Schwalmtal 2164 Jüchen-Otzenrath 2165 Jüchen 2166 Rheydt 217 2171 Leverkusen-Opladen 2173 Langenfeld (Rheinland), Leverkusen-Hitdorf 2174 Burscheid (Rheinland), Leichlingen-Witzhelden 2175 Leichlingen 218 2181 Grevenbroich 2182 Grevenbroich-Kapellen 2183 Rommerskirchen 219 2191 Remscheid 2192 Hückeswagen 2193 Wermelskirchen-Dabringhausen 2195 Radevormwald 2196 Wermelskirchen

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with List of dialling codes in Germany

Start with the simplest possible case. Write down what List of dialling codes in Germany 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 List of dialling codes in Germany 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 List of dialling codes in Germany 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 List of dialling codes in Germany

In research: List of dialling codes in Germany 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 List of dialling codes in Germany 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: List of dialling codes in Germany is common in secondary-school and first-year university syllabi. It links to neighbouring topics Telephone numbers by country, Telephone numbers in Germany, so understanding it makes those chapters shorter.
In everyday life: Look for List of dialling codes in Germany 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 List of dialling codes in Germany in 20 minutes

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Frequently asked questions

What is List of dialling codes in Germany in simple terms?

Why does List of dialling codes in Germany 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 List of dialling codes in Germany?

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 List of dialling codes in Germany.