Card number formats

Issuer Identification Number (IIN)

Toggle card unique codes are all 19 digits long. This includes an 8 digit IIN prefix of 63011900. This is a unique, globally recognised identifier of Toggle cards. You'll see us refer to the full card unique code as a card_reference.
Card number example
6301190060337576946

Card aliases

Toggle can also ingest cards from other providers. In such cases, the ingested cards will have both a Toggle card_reference but also a card_alias.
If you are handling cards with both a card_reference and a card_alias, it is good practice to use the alias in all communication with the card holder, as the card holder will likely only have a copy of the card_alias, whereas the Toggle card_reference is essentially masked from public view.
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Issuer Identification Number (IIN)
Card aliases