Question 1

What country has the dial code +503?

Accepted Answer

国际区号 +503 属于 萨尔瓦多。从国外拨打 萨尔瓦多，请先拨本国国际接入码，再拨 +503，然后接本地号码。完整拨号指南见下方。

Question 2

How do I call a +503 number from outside 萨尔瓦多?

Accepted Answer

Dial your country's international exit code (e.g. 00 or +), then 503, then the local number — omitting any leading 0 from the local number.

+503 是哪个国家的区号？