Australia has only four telephone area codes:
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
A Texas telephone call will have a prefix with it's area code in it. Texas has many area codes. Below are some of the area codes.210214254281325361409430432469512682713806817830832903915936940956972979
There are many postal codes and STD Codes (telephone area codes) in the state of Tamil Nadu. Please be more specific.
That depends entirely on which country you're asking about. 0187 or similar is a valid domestic telephone area code in many different countries. There is no telephone area code 0187 in USA, Canada, Mexico, or Australia. UK has area codes 0187x, but they're strewn from Truro to Abergavenny and from Lochmaddy to the Isle of Benbecula; you need one more digit to narrow it down.
There are domestic telephone area codes similar to 039702 in many different countries. It's impossible to say where it is without knowing which country you're asking about.
A calling code, also called a telephone area code or just area code, is a number that identifies a particular geographic area for telephone numbering purposes. For example, in the UK, telephone area code 01244 identifies telephone numbers from the city of Chester and nearby areas.A calling code for an entire country is called a telephone country code. For example, the telephone country code for North Korea is +850.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The same local telephone number can exist in many different area codes. (After all, that's the whole point of area codes.) If you know where the telephone number is from, and if that place has only one area code, you can find out that way.
Hyderabad is part of the Andhra Pradesh mobile calling circle, which has many, many different mobile codes assigned to it.
A telephone area code is numeric data, but in some cases it may be more appropriate to store it as a text field because many countries quote telephone area codes including the trunk prefix 0. For example, Liverpool, England, is in UK area code 0151. Also, it is sometimes more appropriate in countries that have variable-length area codes to sort them lexically, so that 031, 0321, 0322, 0325, and 033 would appear in that order.
Telephone area code (STD code) 0161 is Ludhiana, Punjab. In international format, it becomes +91 161.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
Russia uses telephone country code +7. The area codes for the city of Moscow are 495 and 499; the surrounding areas use area codes 496 and 498.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
There is no telephone area code 902 in Turkey.However, Turkey's telephone country code is +90, and there are many area codes beginning with 2. For example, the area code for the European side of the city of Istanbul is +90 212.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
I'm guessing that you mean STD = Subscriber Trunk Dialling (telephone area code) rather than STD = Sexually Transmitted Disease. STD code is another term used in some country for telephone area codes. The purpose of a telephone area code is to group telephone numbers by geographic area. In many cases, at least some calls to numbers with the same STD code as the caller can be dialed without the STD code, allowing shorter dialing sequences for many local calls.