dialling code

n.

（电话的）区域号码；

复数：dialling codes

Telephone Numbers in Ukraine
Telephone Numbers in the United Kingdom
War Dialing
To Check if there is a Diversion in place
List of dialling codes in Pakistan
FCC assigns abbreviated dialing codes
N11 DIALING CODES FOR TELEPHONE TRAVELER INFORMATION
List of dialling codes in the United Kingdom
Pac Bell loses dialing code fight
Revised method of dialing code for laser interfere metric length measurement syster