# Address Types

In Nexus, each **address type** is defined by an ISO 20022 code:

* **Account details** will be described with the code *`IBAN`* (for IBAN) or *`ACCT`* (for Account Identifications).
* If `ACCT` is used, it will be necessary to also collect a `Financial Institution Identification` alongside the Account Identification. The `Address Inputs` API informs PSPs what information that needs to be collected.
* **Proxies** are defined by the ISO 20022 `ExternalProxyAccountType1Code`, taken from the [ISO 20022 External Code Set](https://www.iso20022.org/catalogue-messages/additional-content-messages/external-code-sets)

The table below lists the possible address type codes in Nexus. The most commonly accepted address types are bolded.

{% hint style="info" %}
Even IPS that use ISO 20022 domestically often use proprietary codes to describe proxies, for example, using "MSISDN" rather than the ISO 20022 "MBNO". There are particular translation challenges to consider around the use of proxy code - please see [Translating To/From ISO 20022 Codes](/messaging-and-translation/translating-to-from-iso-20022-codes.md) for further detail.
{% endhint %}

### Table: Address types & codes <a href="#toc163730908" id="toc163730908"></a>

<table data-header-hidden><thead><tr><th></th><th width="197"></th><th></th><th></th></tr></thead><tbody><tr><td><strong>CODE (ISO 20022)</strong></td><td><strong>MEANING</strong></td><td><strong>TYPE</strong></td><td><strong>NOTES</strong></td></tr><tr><td><strong>IBAN</strong></td><td><strong>International Bank Account Number</strong></td><td>Account Identification</td><td>Typically defines country, PSP and account. (In some countries, the BIC or Clearing System Member Id is not included in the IBAN, so separate enrichment tables must be used to map a subset of the IBAN to the relevant FI Id.)</td></tr><tr><td><strong>ACCT</strong></td><td><strong>Account Identification (to be used in conjunction with a Financial Institution Identification)</strong></td><td>Account Identification</td><td><strong>Must</strong> be used in conjunction with a Financial Institution Identification (see table below)</td></tr><tr><td><strong>BIID</strong></td><td>Biller Subscriber Identification</td><td>Proxy Id</td><td></td></tr><tr><td><strong>CINC</strong></td><td><strong>Certificate of Incorporation Number</strong></td><td>Proxy Id</td><td>Company registration number</td></tr><tr><td>COTX</td><td>Corporate Tax Identification</td><td>Proxy Id</td><td></td></tr><tr><td>COID</td><td>Country Authority Identification</td><td>Proxy Id</td><td></td></tr><tr><td>CUST</td><td>Customer identification Number</td><td>Proxy Id</td><td></td></tr><tr><td>DNAM</td><td>Domain Name (Internet)</td><td>Proxy Id</td><td></td></tr><tr><td>DRLC</td><td>Driver License Number</td><td>Proxy Id</td><td></td></tr><tr><td>EIDN</td><td>Electronic Identification</td><td>Proxy Id</td><td></td></tr><tr><td><strong>EMAL</strong></td><td><strong>Email address</strong></td><td>Proxy Id</td><td></td></tr><tr><td>EWAL</td><td>E-Wallet identification</td><td>Proxy Id</td><td></td></tr><tr><td>PVTX</td><td>Individual tax identification</td><td>Proxy Id</td><td></td></tr><tr><td>LEIC</td><td>Legal Entity Identifier Code</td><td>Proxy Id</td><td></td></tr><tr><td><strong>MBNO</strong></td><td><strong>Mobile phone number</strong></td><td>Proxy Id</td><td>Most commonly accepted proxy type</td></tr><tr><td><strong>NIDN</strong></td><td><strong>National identification number</strong></td><td>Proxy Id</td><td></td></tr><tr><td>CCPT</td><td>Passport number</td><td>Proxy Id</td><td></td></tr><tr><td>SHID</td><td>Scheme identification Number</td><td>Proxy Id</td><td>Often used for virtual payment addresses</td></tr><tr><td>SOSE</td><td>Social Security Number</td><td>Proxy Id</td><td></td></tr><tr><td>TELE</td><td>Telephone Number (land line)</td><td>Proxy Id</td><td></td></tr><tr><td>UBIL</td><td>Utilities Subscription Identification</td><td>Proxy Id</td><td></td></tr><tr><td>VIPN</td><td>Vehicle Identification Plate Number</td><td>Proxy Id</td><td></td></tr><tr><td>TOKN</td><td>Virtual payment addresses (treated as a “token”)</td><td>Proxy Id</td><td></td></tr></tbody></table>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.nexusglobalpayments.org/addressing-and-proxy-resolution/address-types-and-inputs/address-types.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.