+25 (dialed as 00 25 from many places) is an incomplete code: you need one more digit. Country codes beginning with +25 are generally in East Africa.
+250 - Rwanda
+251 - Ethiopia
+252 - Somalia
+253 - Djibouti
+254 - Kenya
+255 - Tanzania
+256 - Uganda
+257 - Burundi
+258 - Mozambique
+259 - (unused)
(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.)
Country code +225 (dialed as 00 225 from many places) is Cote d'Ivoire (Ivory Coast) in western Africa.
Landline numbers begin with +225 2 or +225 3
Mobile numbers begin with +225 0, +225 4, +225 5, or +225 6
(Note that, in the case of mobile numbers beginning with +225 0, you do not drop the leading 0 from the domestic number when calling from other countries.)
(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.)
Country code +221 (dialed as 00 221 from many places) is Senegal. All numbers have 9 digits after country code +221.
Landline numbers begin with +221 3.
Mobile numbers begin with +221 7.
(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.)
Country code +255 (dialed as 00 255 from many places) is Tanzania.
Dar-es-Salaam is area code +255 22.
Zanzibar is area code +255 24.
All landline numbers begin with +255 2x.
VoIP numbers begin with +255 41.
Mobile numbers begin with +255 6 or +255 7.
(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.)
Country code +224 (dialed as 00 224 from many places) is the Republic of Guinea, West Africa (capital: Conakry), not to be confused with Guinea-Bissau, Equatorial Guinea, or Papua New Guinea.
Landline numbers begin with +224 30.
Mobile numbers begin with +224 55 or +224 6.
WiMAX numbers begin with +224 79.
(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.)
Country code +227 (dialed as 00 227 from many places) is Niger. All numbers have 8 digits after country code +227.
All landline numbers begin with +227 20.
Fixed wireless numbers begin with +227 21.
Mobile numbers begin with +227 93 (Sahelcom), +227 94 (Telecel), or +227 96 (Celtel).
Note that "Niger" is a different country from "Nigeria."
(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.)
Telephone country code +235 (dialed as 00 235 from many places) is the African nation of Chad.
Mobile numbers begin with +235 300 through +235 359, +235 620, +235 679, or +235 980.
(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.)
East Africa
Telephone country code +93 is Afghanistan, and area code +93 25 (Afghan domestic telephone area code 025) is the city of Logar, south of Kabul.
The telephone country code for Vietnam is +84. The area code for Lang Son is 025, or +84 25 in international format.
Leichtenstein is telephone country code +423.
026 appears to be a telephone area code, written in domestic format. It is impossible to know where it is without knowing what country you're asking about.
where is telephone country code 1816
That is not a country code.
There is no 909 country code.
There is no telephone country code +897, nor +89, nor any other country code beginning with +89. There are no valid telephone numbers beginning with +89.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.
Togo is country code +228.