NP postcode area

Columns: Postcode district | Post town | Coverage | Local authority area
NP18 | NEWPORT | Eastern Newport , including Caerleon , Langstone , Llanwern , Nash , Llandegveth Underwood | Newport , Monmouthshire , Torfaen | NP19 | NEWPORT | Eastern and East Central Newport , including : Beechwood , Maindee , St. Julians , Ringland | Newport | NP20 | NEWPORT | Western and West Central Newport , including : City centre , Pill , Maesglas , Crindau , Malpas , Bettws | Newport | NP22 | TREDEGAR | Tredegar , Rhymney | Blaenau Gwent , Caerphilly | NP23 | EBBW VALE | Ebbw Vale , Brynmawr , Cwm | Blaenau Gwent | NP24 | NEW TREDEGAR | New Tredegar | Caerphilly | NP25 | MONMOUTH | Monmouth , Wyesham , Redbrook , Welsh Newton | Monmouthshire , Forest of Dean , Herefordshire | NP26 | CALDICOT | Caldicot , Magor , Newport | Monmouthshire , Newport | NP44 | CWMBRAN | Cwmbran | Torfaen

Example questions:
What is the local authority area of the postcode in the NP postcode area covering the area promoted as a Gateway to Wales ? | Which postcode in the NP postcode area covers the area famed for a castle built for William ap Thomas ? | What is the local authority area of the postcode in the NP postcode area covering the largest town in the Ebbw Fach valley ? | Which postcode in the NP postcode area covers a small town and community in southeastern Powys , Wales , near Abergavenny ?

Answers:
Herefordshire | NP15 | Blaenau Gwent | NP8