> ## Documentation Index > Fetch the complete documentation index at: https://flutterwaveinc.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Resolve Card Bin > Resolve your customer's bank identification number(BIN) ## OpenAPI ````yaml get /card-bins/{bin} openapi: 3.0.0 info: title: Flutterwave v3 description: >- The Flutterwave for Business(F4B) APIs collection for all v3 endpoints with pre-formatted requests and response examples. contact: {} version: '1.0' servers: - url: https://api.flutterwave.com/v3 variables: {} security: - bearer: [] tags: - name: Charges description: >- The charge APIs includes several payment collection methods to help you collect payments. - name: Tokenized Charges description: Tokenize your customers' cards with Flutterwave for faster payments - name: Preauthorization description: Manage preauth attemps on card transactions - name: Transactions description: Manage transactions, query statuses, logs and fees - name: Transfers description: Transfers to local and international customers - name: Beneficiaries description: Manage transfer beneficiaries - name: Virtual Cards description: Manage Flutterwave virtual cards - name: Virtual Account Numbers description: Manage virtual accounts - name: Collection Subaccounts description: Manage Collection Subaccounts - name: Payout Subaccounts description: Manage Payout Subaccounts - name: Subscriptions description: Manage user subscriptions - name: Payment Plans description: Manage Payment Plans - name: Bill Payments description: Manage Bill Payments - name: Banks description: Fetch Bank Information - name: Misc description: >- Verify user information like bank verification numbers, card bins, account information - name: Settlements description: Manage your settlements - name: Otps description: Create and manage one time passwords (OTPs) for your applications - name: Chargebacks description: Manage Chargebacks paths: /card-bins/{bin}: get: tags: - Misc summary: Resolve Card Bin description: Resolve your customer's bank identification number(BIN) operationId: ResolveCardBin parameters: - name: bin in: path description: '' required: true style: simple schema: type: integer format: int32 example: 539983 responses: '200': description: OK headers: Date: content: text/plain: schema: type: string example: Mon, 18 Mar 2024 10:58:04 GMT Content-Length: content: text/plain: schema: type: string example: '200' Connection: content: text/plain: schema: type: string example: keep-alive Server: content: text/plain: schema: type: string example: nginx/1.24.0 Access-Control-Allow-Origin: content: text/plain: schema: type: string example: '*' Access-Control-Allow-Headers: content: text/plain: schema: type: string example: >- Origin, X-Requested-With, Content-Type, Accept, Authorization, v3-xapp-id, flw-auth-token, mra-auth-token, alt_mode_auth, mid, altmodeauth, cc-admin-token, x-flw-lang Access-Control-Allow-Methods: content: text/plain: schema: type: string example: PUT, POST, GET, DELETE, OPTIONS ETag: content: text/plain: schema: type: string example: W/"c8-q1DUmQF6fVnh1Lsr3P/CMg" Strict-Transport-Security: content: text/plain: schema: type: string example: max-age=31536000; includeSubDomains; preload; always; content: application/json; charset=utf-8: schema: allOf: - $ref: '#/components/schemas/ResolveCardBin' - example: status: success message: completed data: issuing_country: ' NIGERIA NG' bin: '539983' card_type: MASTERCARD issuer_info: >- MASTERCARD GUARANTY TRUST BANK Mastercard Naira Debit Card example: status: success message: completed data: issuing_country: ' NIGERIA NG' bin: '539983' card_type: MASTERCARD issuer_info: 'MASTERCARD GUARANTY TRUST BANK Mastercard Naira Debit Card ' '400': description: Bad Request headers: Date: content: text/plain: schema: type: string example: Thu, 28 Mar 2024 11:58:11 GMT Content-Length: content: text/plain: schema: type: string example: '156' Connection: content: text/plain: schema: type: string example: keep-alive Server: content: text/plain: schema: type: string example: nginx/1.24.0 Access-Control-Allow-Origin: content: text/plain: schema: type: string example: '*' Access-Control-Allow-Headers: content: text/plain: schema: type: string example: >- Origin, X-Requested-With, Content-Type, Accept, Authorization, v3-xapp-id, flw-auth-token, mra-auth-token, alt_mode_auth, mid, altmodeauth, cc-admin-token, x-flw-lang Access-Control-Allow-Methods: content: text/plain: schema: type: string example: PUT, POST, GET, DELETE, OPTIONS ETag: content: text/plain: schema: type: string example: W/"9c-FZyNvujojm3J6oKO4oqnbw" content: application/json; charset=utf-8: schema: allOf: - $ref: '#/components/schemas/BinNotFound1' - example: status: error message: completed data: nigerian_card: false response_code: RR response_message: BIN not Found transaction_reference: null example: status: error message: completed data: nigerian_card: false response_code: RR response_message: BIN not Found transaction_reference: null deprecated: false components: schemas: ResolveCardBin: title: ResolveCardBin required: - status - message - data type: object properties: status: type: string message: type: string data: $ref: '#/components/schemas/Data85' example: status: success message: completed data: issuing_country: ' NIGERIA NG' bin: '539983' card_type: MASTERCARD issuer_info: 'MASTERCARD GUARANTY TRUST BANK Mastercard Naira Debit Card ' BinNotFound1: title: BinNotFound1 required: - status - message - data type: object properties: status: type: string message: type: string data: $ref: '#/components/schemas/Data86' example: status: error message: completed data: nigerian_card: false response_code: RR response_message: BIN not Found transaction_reference: null Data85: title: Data85 required: - issuing_country - bin - card_type - issuer_info type: object properties: issuing_country: type: string bin: type: string card_type: type: string issuer_info: type: string example: issuing_country: ' NIGERIA NG' bin: '539983' card_type: MASTERCARD issuer_info: 'MASTERCARD GUARANTY TRUST BANK Mastercard Naira Debit Card ' Data86: title: Data86 required: - nigerian_card - response_code - response_message - transaction_reference type: object properties: nigerian_card: type: boolean response_code: type: string response_message: type: string transaction_reference: type: string nullable: true example: nigerian_card: false response_code: RR response_message: BIN not Found transaction_reference: null securitySchemes: bearer: type: http scheme: bearer ````