Where is 02382 STD code?

You need to specify in which country. See the related questions below.

In the UK, area code 023 is Portsmouth and Southampton. Numbers beginning with 023 9 are in Portsmouth, but it is incorrect to quote the area code as 0239. The area code is just 023 (or international +44 23); the '9' is the first digit of the 8-digit local number.

0239 is not a valid telephone area code (STD Code) in either India (+91) or Pakistan (+92).

(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.)