IID 08509

IBAN structure with this code

A Swiss IBAN is CH, two check digits, the five-digit IID, then a twelve-digit account part. When the institution holds a QR-IID, the QR-IBAN of a QR-bill carries that number in the same position.

CH84 0850 9000 0000 0000 1

Synthetic example: the account part is a placeholder, this IBAN belongs to nobody. It shows where the code sits inside the IBAN.

QR-IID 30218: a QR-IBAN with this number expects a QRR reference on the QR-bill.

What the API answers for this code

The block below is the route's own answer, produced by the same code that serves api.ibanforge.com, on the register as of the date shown. Nothing is edited.

{
  "iid": "08509",
  "found": true,
  "institution": {
    "name": "Mercantil Bank (Schweiz) AG",
    "type": "bank",
    "iid_type": "headquarters",
    "headquarters_iid": "08509"
  },
  "address": {
    "street": "Kasernenstrasse",
    "building_number": "1",
    "post_code": "8036",
    "town": "Zürich",
    "country": "CH"
  },
  "bic": "BAMRCHZZXXX",
  "payment_services": {
    "sic": true,
    "rtgs_chf": true,
    "instant_payments_chf": true,
    "eurosic": false,
    "lsv_bdd_chf": false,
    "lsv_bdd_eur": false
  },
  "sic_iid": "085098",
  "qr_iid": "30218",
  "qr_iid_source": "register",
  "valid_on": "2026-09-01"
}