Validates an IBAN: country prefix, length, segment-by-segment structure and the ISO 7064 M
Validates an IBAN: country prefix, length, segment-by-segment structure and the ISO 7064 MOD 97-10 check digits, recomputing the correct ones when they are wrong. Checked against the SWIFT IBAN Registry, which also yields bank and branch identifiers and names territories sharing a prefix (Jersey uses GB). Reports every check with status, not only failures, and states what it does not check: existence, bank name, national BBAN check digits. No outbound request.
20000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-16
updated
Provider
api.ozdreamtools.de · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x4Dd5E59475A55f1C2c0816469600663cb74cC1Dc",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "20000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"iban": "DE89 3704 0044 0532 0130 00"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"check_digits": {
"algorithm": "…",
"computed": "89",
"given": "89",
"remainder": 1
},
"checked_at": "2026-07-26T09:00:00.000Z",
"checks": [
{
"findings": 0,
"key": "check_digits",
"source": "ISO 7064 MOD 97-10",
"status": "ok"
}
],
"country": {
"also_used_by": [],
"code": "DE",
"effective": "Jul-07",
"in_registry": true,
"name": "Germany",
"sepa": true
},
"findings": [],
"input": {
"electronic": "DE89370400440532013000",
"print": "DE89 3704 0044 0532 0130 00",
"raw": "DE89 3704 0044 0532 0130 00"
},
"interpretations": [
{
"key": "print_grouping",
"reading": "…"
}
],
"not_checked": [
"…"
],
"parts": {
"bank_identifier": {
"pattern": "8!n",
"position": "1-8",
"value": "37040044"
},
"bban": "370400440532013000",
"branch_identifier": null,
"check_digits": "89",
"country_code": "DE"
},
"source": {
"countries": 89,
"digest": "…",
"name": "IBAN Registry (SWIFT, registration authority under ISO 13616-2)",
"retrieved": "2026-05-10"
},
"structure": {
"bban_pattern": "8!n10!n",
"iban_pattern": "DE2!n8!n10!n",
"length_actual": 22,
"length_expected": 22,
"segments": [
{
"kind": "digits",
"length": 8,
"ok": true,
"value": "37040044"
}
]
},
"summary": {
"errors": 0,
"infos": 0,
"warnings": 0
},
"valid": true
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"iban": {
"description": "IBAN in electronic or print format",
"type": "string"
}
},
"required": [
"iban"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://api.ozdreamtools.de/api/iban/check" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://api.ozdreamtools.de/api/iban/check");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://api.ozdreamtools.de/api/iban/check")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/3611.json, and this resource appears in /discovery/resources and /discovery/search.