What is the country code and area code of Wellington New Zealand?

The country code for New Zealand is +64.

When calling from outside New Zealand, you must drop the trunk prefix '0' from the NZ area code. For example, Christchurch's area code 03 becomes +64 3.

The area codes are:

02 or +64 2 = mobile numbers

03 or +64 3 = South Island, Chatham Islands, incl. Christchurch, Dunedin, Nelson

04 or +64 4 = Wellington, Kapiti, but not the Wairarapa or Otaki

06 or +64 6 = southern and eastern North Island, incl. Taranaki, Hawke's Bay, Gisborne, Otaki, the Wairarapa, and Manawatu-Wanganui (excluding Taumarunui)

07 or +64 7 = Waikato, Hamilton, Bay of Plenty, Taumarunui

09 or +64 9 = Auckland, Whangarei, Northland

Mobile Phones:

021 or +64 21 = Vodafone

022 or +64 22 = 2degrees

027 or +64 27 = Telecom NZ

(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, and many other countries use different prefixes.)