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Deutsche Bundesbank register

Bankleitzahl 41041000

ZTB der Commerzbank, Hamm

Bankleitzahl41041000
InstitutionZTB der Commerzbank
Short nameZTB der Commerzbank
BICCOBADEFFXXX
Postcode59003
TownHamm
Statusactive
Successor BLZnone

IBAN structure with this code

A German IBAN is DE, two check digits, the eight-digit Bankleitzahl, then the ten-digit account number. The BLZ is what the register can vouch for; the account number is known only to the bank.

DE15 4104 1000 1000 0000 00

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

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.

{
  "valid": true,
  "bic": {
    "code": "COBADEFFXXX",
    "bank_name": "ZTB der Commerzbank",
    "city": "Hamm",
    "source": "Deutsche Bundesbank Bankleitzahlendatei",
    "as_of": "2026-09",
    "basis": "national_register",
    "authoritative": true,
    "lei": "851WYGNLUQLFZBSYGB56"
  },
  "bank_code_check": {
    "value": "41041000",
    "status": "verified",
    "match": "register",
    "register": "Deutsche Bundesbank Bankleitzahlendatei",
    "authoritative": true,
    "institution": {
      "name": "ZTB der Commerzbank",
      "street": null,
      "post_code": "59003",
      "town": "Hamm",
      "country": "DE"
    },
    "as_of": "2026-09"
  },
  "sepa": {
    "member": true,
    "schemes": [
      "SCT",
      "SDD",
      "SCT_INST"
    ],
    "vop_required": true,
    "vop_participant": true,
    "basis": "epc_register"
  },
  "issuer": {
    "type": "bank",
    "name": "ZTB der Commerzbank",
    "classification": "default"
  },
  "risk_indicators": {
    "country_risk": "standard",
    "sepa_reachable": true,
    "vop_coverage": true,
    "test_bic": false
  }
}

Other codes of the same institution

Check an IBAN in the playgroundAudit a whole creditor fileGerman bank codes (Bankleitzahlen)

Source: Deutsche Bundesbank Bankleitzahlendatei, register as of 2026-09.