Advanced NIN Lookup - Dojah Inc

curl --request GET \
  "https://api.dojah.io/api/v1/kyc/nin/advance?nin=70123456789" \
  -H "Authorization: {{secret_key}}" \
  -H "AppId: {{app_id}}"

const params = new URLSearchParams({
  "nin": "70123456789",
});

const url = "https://api.dojah.io/api/v1/kyc/nin/advance?" + params;
const res = await fetch(url, {
  headers: {
    Authorization: process.env.DOJAH_SECRET_KEY,
    AppId: process.env.DOJAH_APP_ID,
  },
});
const data = await res.json();

import os, requests

res = requests.get(
    "https://api.dojah.io/api/v1/kyc/nin/advance",
    headers={
        "Authorization": os.environ["DOJAH_SECRET_KEY"],
        "AppId": os.environ["DOJAH_APP_ID"],
    },
    params={ "nin": "70123456789" },
)
data = res.json()

{
  "entity": {
    "nin": "1*****78910",
    "first_name": "John",
    "last_name": "Musa",
    "middle_name": "Doe",
    "date_of_birth": "1909-01-11",
    "phone_number": "081123456798",
    "gender": "Male",
    "photo": "/9j/4AAQSz…",
    "residence_address_line_1": "Ikeja",
    "origin_state": "Lagos",
    "tax_id": "211111111111111111",
    "tax_residency": "Lagos State"
  }
}

GET/api/v1/kyc/nin/advance

A richer NIN lookup — the standard identity data plus extra fields such as tax ID, for compliance and risk.

Headers

Header	Required	Description
`Authorization`	Yes	Your app’s secret key, sent as-is — not `Bearer`.
`AppId`	Yes	The App ID from your dashboard.

Query parameters

Parameter	Type	Required	Description
`nin`	string	Yes	A valid 11-digit National Identity Number.

Response

Returns an entity with the holder’s names, gender, date of birth, phone number, and a base64-encoded photo — plus the fields the basic lookup doesn’t carry: residence address, state of origin, and tax details. The nin is echoed back masked.

Field	Type	Description
`entity.nin`	string	The NIN used for the lookup, masked
`entity.first_name`	string	First name of the holder
`entity.middle_name`	string	Middle name of the holder
`entity.last_name`	string	Surname of the holder
`entity.date_of_birth`	string	Date of birth, `YYYY-MM-DD`
`entity.phone_number`	string	Phone number linked to the NIN
`entity.gender`	string	Gender of the holder
`entity.photo`	string	Base64-encoded photograph
`entity.residence_address_line_1`	string	First line of the registered residential address
`entity.origin_state`	string	State of origin
`entity.tax_id`	string	Taxpayer Identification Number (TIN) tied to the holder.
`entity.tax_residency`	string	State tax authority the holder is registered with.

tax_id, photo, and the address fields are sensitive personal data. Store only what you need, keep it encrypted at rest, and never write these values to logs — mask them the way the API masks nin.

Errors

Code	Meaning
`400`	Bad request — a required parameter is missing or malformed.
`401`	Unauthorized — check your key and `AppId` (no `Bearer` prefix).
`402`	Insufficient wallet balance. Fund your wallet.
`404`	No record found for the supplied identifier.
`424`	The upstream source was unavailable — retry shortly.
`429`	Too many requests — back off and retry.

Sandbox

Test with nin=70123456789 against https://sandbox.dojah.io. See Sandbox & test data for every test value.

curl --request GET \
  "https://api.dojah.io/api/v1/kyc/nin/advance?nin=70123456789" \
  -H "Authorization: {{secret_key}}" \
  -H "AppId: {{app_id}}"

const params = new URLSearchParams({
  "nin": "70123456789",
});

const url = "https://api.dojah.io/api/v1/kyc/nin/advance?" + params;
const res = await fetch(url, {
  headers: {
    Authorization: process.env.DOJAH_SECRET_KEY,
    AppId: process.env.DOJAH_APP_ID,
  },
});
const data = await res.json();

import os, requests

res = requests.get(
    "https://api.dojah.io/api/v1/kyc/nin/advance",
    headers={
        "Authorization": os.environ["DOJAH_SECRET_KEY"],
        "AppId": os.environ["DOJAH_APP_ID"],
    },
    params={ "nin": "70123456789" },
)
data = res.json()

{
  "entity": {
    "nin": "1*****78910",
    "first_name": "John",
    "last_name": "Musa",
    "middle_name": "Doe",
    "date_of_birth": "1909-01-11",
    "phone_number": "081123456798",
    "gender": "Male",
    "photo": "/9j/4AAQSz…",
    "residence_address_line_1": "Ikeja",
    "origin_state": "Lagos",
    "tax_id": "211111111111111111",
    "tax_residency": "Lagos State"
  }
}