+886-7-####### is in Kaohsiung, Taiwan, Republic of China
(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 country code and area code of Chishan, Taiwan is 886, 7.
The country code is France +33, and numbers beginning with +33 7 are mobile phones.
The Seychelles use country code +248. There are no city codes or area codes. The local number is 7 digits.
Country code +974 is Qatar, in the Persian Gulf.
Country code +7 is Russia and Kazakhstan, but +7 27 is an invalid code.
The Solomon Islands use country code +677. There are no city codes or area codes. The local number is 5 or 7 digits.
The country code and area code of Astrakhan, Russian Federation is 7, (8)8512.
Russia and Kazakhstan both have country code +7.
Saransk, Mardovia, Russia is in Country code +7, city code 8342, according to the Rostelecom (Russian phone company) website.Dial your international access prefix (00, 011, or 8•10, or 0011, or whatever), then the country code 7, city code 8342, and local number.(For future reference, you would have gotten a much quicker answer if you had included the country in your question.)
The country code and area code of Evreyskaya region, Russian Federation is 7, (8)426.
The country code and area code of Lipetsk, Russian Federation is 7, (8)4742.
The country prefix for dialling New Zealand is 64. After that you will need the city or regional code the the subscriber's number.