It depends where you're calling from.
If you're in Northern Ireland, you can just dial the 8-digit local number. If you're elsewhere in the UK, dial 028 and then the 8-digit local number. If you're in the Republic of Ireland, dial 048 and then the 8-digit local number.
If you're anywhere else in the world, dial your international access prefix, then the country code 44, the area code 28 (dropping the leading '0'), and then the 8-digit local number.
Kilcar in County Donegal, Ireland, is in area code 074, which is +353 74 in international format.
Ireland's dialling code is 353. For Meath if you have the phone number it may start with 01 or with 046. So you would dial either of those, without the zero, and then the rest of the number. So dial your international dialling access code, then 353 for Ireland and then the number you have without dialling the first zero.
The airport code for Grant County International Airport is MWH.
The airport code for Chippewa County International Airport is CIU.
The airport code for Sullivan County International Airport is MSV.
The airport code for Oakland International Airport is OAK.
The airport code for St. Clair County International Airport is PHN.
The airport code for St. Lucie County International Airport is FPR.
The international code for Ireland is 353, regardless of where you are phoning from.
Parts of county Cavan and county Meath use 049.
IRL
Ireland