Telecommunications has a numbering system where each country has its own calling code called “Country Code”, “Country Calling Code”, International Subscriber Dialing (ISD) or International Direct Dialing (IDD). These are the codes regulated by universal telecommunications numbering plan.
As per the Numbering Plan, countries are divided into 9 zones as bellow.
| Zone 1 | United states of America, Canada, Bermuda and Caribbean Nations |
| Zone 2 | African Nations |
| Zone 3 & 4 | European Nations |
| Zone 5 | Central and South America |
| Zone 6 | South East Asia |
| Zone 7 | Russia |
| Zone 8 | East Asia and Special Services |
| Zone 9 | Other Asian Countries |
Across all zones, country calling are unique and are required to place calls between zones or countries. List of all country codes can be found here.
Within each zone, in general each country will have its own dialing country code. In case of North America, ‘+1’ code is shared across many countries like United States, Canada, Bermuda and other Caribbean nations.
Within each country, based on the population and demand, they can have multiple area codes with varying no. of digits. Also, in many cases, numbering system will differentiate landline numbers from mobile numbers.
The same country codes or numbering system will be used by variety of services like cellular phones, fixed phones, pagers, special services etc. Each service can have its own special dial instructions like, for example, ‘911’ is dialed in case of emergency in United States with out any area codes.
Roaming Profiles: In case of cellular phones, its possible with it can be carried over to a other countries but still access the same number with parent country / area codes. This is supported when the telecom operator who issued and mange the number supports it.
List of Country Codes
- +1 Country Code
- +1242 Country Code
- +1246 Country Code
- +1264 Country Code
- +1268 Country Code
- +1284 Country Code
- +1340 Country Code
- +1345 Country Code
- +1441 Country Code
- +1473 Country Code
- +1649 Country Code
- +1664 Country Code
- +1670 Country Code
- +1671 Country Code
- +1684 Country Code
- +1721 Country Code
- +1758 Country Code
- +1767 Country Code
- +1784 Country Code
- +1787 Country Code
- +1808 Country Code
- +1809 Country Code
- +1829 Country Code
- +1849 Country Code
- +1868 Country Code
- +1869 Country Code
- +1876 Country Code
- +1939 Country Code
- +975 Country Code
- +976 Country Code
- +977 Country Code
- +992 Country Code
- +993 Country Code
- +994 Country Code
- +995 Country Code
- +996 Country Code
- +998 Country Code
- +2908 Country Code
- +4779 Country Code
- +5399 Country Code
- +5993 Country Code
- +5994 Country Code
- +5997 Country Code
- +5999 Country Code
- +7840 Country Code
- +7940 Country Code
- +8810 Country Code
- +8811 Country Code
- +8812 Country Code
- +8813 Country Code
- +8816 Country Code
- +8817 Country Code
- +8818 Country Code
- +8819 Country Code
- +35818 Country Code
- +39066 Country Code
- +88213 Country Code
- +88216 Country Code
- +99534 Country Code
- +99544 Country Code
- +500 Country Code
- +501 Country Code
- +502 Country Code
- +503 Country Code
- +504 Country Code
- +505 Country Code
- +506 Country Code
- +507 Country Code
- +508 Country Code
- +509 Country Code
- +590 Country Code
- +591 Country Code
- +592 Country Code
- +593 Country Code
- +594 Country Code
- +595 Country Code
- +596 Country Code
- +597 Country Code
- +598 Country Code
- +670 Country Code
- +672 Country Code
- +673 Country Code
- +674 Country Code
- +675 Country Code
- +676 Country Code
- +677 Country Code
- +678 Country Code
- +679 Country Code
- +680 Country Code
- +681 Country Code
- +682 Country Code
- +683 Country Code
- +685 Country Code
- +686 Country Code
- +687 Country Code
- +688 Country Code
- +689 Country Code
- +690 Country Code
- +691 Country Code
- +692 Country Code
- +800 Country Code
- +808 Country Code
- +850 Country Code
- +852 Country Code
- +853 Country Code
- +855 Country Code
- +856 Country Code
- +870 Country Code
- +878 Country Code
- +880 Country Code
- +881 Country Code
- +886 Country Code
- +960 Country Code
- +961 Country Code
- +962 Country Code
- +963 Country Code
- +964 Country Code
- +965 Country Code
- +966 Country Code
- +967 Country Code
- +968 Country Code
- +970 Country Code
- +971 Country Code
- +972 Country Code
- +973 Country Code
- +974 Country Code
- +230 Country Code
- +231 Country Code
- +232 Country Code
- +233 Country Code
- +234 Country Code
- +235 Country Code
- +236 Country Code
- +237 Country Code
- +238 Country Code
- +239 Country Code
- +240 Country Code
- +241 Country Code
- +242 Country Code
- +243 Country Code
- +244 Country Code
- +245 Country Code
- +246 Country Code
- +247 Country Code
- +248 Country Code
- +249 Country Code
- +250 Country Code
- +251 Country Code
- +252 Country Code
- +253 Country Code
- +254 Country Code
- +255 Country Code
- +256 Country Code
- +257 Country Code
- +258 Country Code
- +260 Country Code
- +261 Country Code
- +262 Country Code
- +263 Country Code
- +264 Country Code
- +265 Country Code
- +266 Country Code
- +267 Country Code
- +268 Country Code
- +269 Country Code
- +290 Country Code
- +291 Country Code
- +297 Country Code
- +298 Country Code
- +299 Country Code
- +350 Country Code
- +351 Country Code
- +352 Country Code
- +353 Country Code
- +354 Country Code
- +355 Country Code
- +356 Country Code
- +357 Country Code
- +358 Country Code
- +359 Country Code
- +370 Country Code
- +371 Country Code
- +372 Country Code
- +373 Country Code
- +374 Country Code
- +375 Country Code
- +376 Country Code
- +377 Country Code
- +378 Country Code
- +379 Country Code
- +380 Country Code
- +381 Country Code
- +382 Country Code
- +385 Country Code
- +386 Country Code
- +387 Country Code
- +389 Country Code
- +420 Country Code
- +421 Country Code
- +423 Country Code
- +32 Country Code
- +31 Country Code
- +27 Country Code
- +30 Country Code
- +33 Country Code
- +34 Country Code
- +36 Country Code
- +39 Country Code
- +40 Country Code
- +41 Country Code
- +43 Country Code
- +44 Country Code
- +45 Country Code
- +46 Country Code
- +47 Country Code
- +48 Country Code
- +49 Country Code
- +51 Country Code
- +52 Country Code
- +53 Country Code
- +54 Country Code
- +55 Country Code
- +56 Country Code
- +57 Country Code
- +58 Country Code
- +60 Country Code
- +61 Country Code
- +62 Country Code
- +63 Country Code
- +64 Country Code
- +65 Country Code
- +66 Country Code
- +76 Country Code
- +77 Country Code
- +81 Country Code
- +82 Country Code
- +84 Country Code
- +86 Country Code
- +90 Country Code
- +91 Country Code
- +92 Country Code
- +93 Country Code
- +94 Country Code
- +95 Country Code
- +98 Country Code
- +211 Country Code
- +212 Country Code
- +213 Country Code
- +216 Country Code
- +218 Country Code
- +220 Country Code
- +221 Country Code
- +222 Country Code
- +223 Country Code
- +224 Country Code
- +226 Country Code
- +227 Country Code
- +228 Country Code
- +229 Country Code
- +7 Country Code
- +20 Country Code