> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-fundamentals/addressbase-islands-local-custodian-codes.md).

# AddressBase Islands local custodian codes

The following page details the current local custodian codes of all local custodians contributing to AddressBase Plus Islands and AddressBase Premium Islands products.

{% hint style="info" %}
The local custodian codes listed in the zip file and table below are applicable to the AddressBase Plus Islands and AddressBase Premium Islands products.

They are not applicable to the AddressBase, AddressBase Core, AddressBase Plus and AddressBase Premium products; local custodian codes for these products are available from the [AddressBase local custodian codes page](/os-downloads/products/addresses-and-names-portfolio/addressbase-fundamentals/addressbase-local-custodian-codes.md).

Local custodian codes available on this page were last reviewed on **03 February 2026**
{% endhint %}

## Islands local custodian codes download

Local custodian code data is available to download in CSV format in the following zip file:

{% file src="/files/U3krxi5S9lIhnklr2g7N" %}

## Islands local custodian codes table

| Local Custodian Code | Local Custodian Name            |
| -------------------- | ------------------------------- |
| 28                   | Isle of Man                     |
| 8130                 | Antrim and Newtownabbey         |
| 8131                 | Armagh, Banbridge and Craigavon |
| 8132                 | Belfast                         |
| 8133                 | Causeway Coast and Glens        |
| 8134                 | Derry and Strabane              |
| 8135                 | Fermanagh and Omagh             |
| 8136                 | Lisburn and Castlereagh         |
| 8137                 | Mid and East Antrim             |
| 8138                 | Mid Ulster                      |
| 8139                 | Newry Mourne and Down           |
| 8140                 | North Down and Ards             |
| 8200                 | Jersey                          |
| 8205                 | Guernsey                        |


---

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