www.dcode.fr Open in urlscan Pro
213.186.33.19  Public Scan

Form analysis
4 forms found in the DOM

#

<form id="search" action="#">
  <label for="search_input">Search a tool on dCode by keywords:</label><br>
  <input type="text" id="search_input" placeholder="e.g. type 'boolean'" value=""> <button style="cursor: pointer;">⏎</button><br>
  <label>Browse the <a href="tools-list">full dCode tools' list</a></label><br>
</form>

#

<form id="contact_form" action="#">
  <label>Need Help ?</label><br>
  <p>Please, check our <a href="https://discord.gg/bKdbZeP" target="_blank" rel="noopener">dCode Discord</a> community for help requests!<br>NB: for encrypted messages, test our automatic <a href="/cipher-identifier">cipher identifier</a>!<br><br>
  </p>
  <label for="contact_message">Message for dCode's team:</label><br>
  <textarea id="contact_message" placeholder="A question, a suggestion, an idea, a feedback, an opinion to share? (Help requests are ignored)
NB : to get an answer, write an email address (not published)"></textarea>
  <button style="cursor: pointer;">Send this message!</button>
  <p>Thanks to your feedback and relevant comments, dCode has developed the best 'IBAN Number' tool, so feel free to write! Thank you!</p>
</form>

POST

<form id="iban_algorithm" method="post">
  <label for="iban_algorithm_numbers">Numbers(s)</label><br><textarea name="numbers" spellcheck="false" id="iban_algorithm_numbers" class="" data-hasqtip="0"></textarea><br>
  <button data-post="numbers,check" post="numbers,check" style="margin: 0.1em 172.812px; cursor: pointer;">Check</button>
  <button data-post="numbers,checksum" post="numbers,checksum" style="margin: 0.1em 95.8125px; cursor: pointer;">Calculate Checksum Control</button>
  <div class="cf "><span>See also:</span> <a href="/bban-check">BBAN Number</a> — <a href="/luhn-algorithm">Luhn Number Checksum</a></div>
</form>

#

<form action="#">
  <h2>Need Help ?</h2>
  <p class="info">Please, check our <a href="https://discord.gg/bKdbZeP" target="_blank" rel="noopener">dCode Discord</a> community for help requests!<br>NB: for encrypted messages, test our automatic
    <a href="/cipher-identifier">cipher identifier</a>!</p>
  <h2>Questions / Comments</h2>
  <button id="comments_button" class="contact" style="cursor: pointer; margin: 0.1em 148.812px;">Write a message</button>
  <p class="info">Thanks to your feedback and relevant comments, dCode has developed the best 'IBAN Number' tool, so feel free to write! Thank you!</p>
</form>

Text Content

WE VALUE YOUR PRIVACY

We and our partners store and/or access information on a device, such as cookies
and process personal data, such as unique identifiers and standard information
sent by a device for personalised ads and content, ad and content measurement,
and audience insights, as well as to develop and improve products.With your
permission we and our partners may use precise geolocation data and
identification through device scanning. You may click to consent to our and our
partners’ processing as described above. Alternatively you may access more
detailed information and change your preferences before consenting or to refuse
consenting.Please note that some processing of your personal data may not
require your consent, but you have a right to object to such processing. Your
preferences will apply to this website only. You can change your preferences at
any time by returning to this site or visit our privacy policy.
MORE OPTIONS AGREE
Search for a tool
Search a tool on dCode by keywords:
⏎
Browse the full dCode tools' list


IBAN Number

Tool to check IBAN numbers. The IBAN (International Bank Account Number)
algorithm allows checking if an IBAN number is correct.

Results


IBAN Number - dCode

Tag(s) : Checksum

Share

dCode and more

dCode is free and its tools are a valuable help in games, maths, geocaching,
puzzles and problems to solve every day!
A suggestion ? a feedback ? a bug ? an idea ? Write to dCode!

Need Help ?


Please, check our dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!



Message for dCode's team:
Send this message!

Thanks to your feedback and relevant comments, dCode has developed the best
'IBAN Number' tool, so feel free to write! Thank you!


IBAN NUMBER

 1. Informatics
 2. Algorithm
 3. Checksum
 4. IBAN Number




IBAN NUMBER CHECKER (INTERNATIONAL)↺

Numbers(s)

Check Calculate Checksum Control
See also: BBAN Number — Luhn Number Checksum



ANSWERS TO QUESTIONS (FAQ)

Feel free to edit this Q&A, review it or improve it!


WHAT IS AN IBAN? (DEFINITION)

An IBAN (International Bank Account Number) is composed of 14 to 34 characters
according to standard ISO13616.

It starts with 2 letters indicating the country code of the bank account, then
the checksum control key (between 02 and 98) and from 10 to 30 characters
depending on countries that usually identify the bank and the account number.

The IBAN number is used for SEPA mandates (Austria, Belgium, Cyprus, Estonia,
Finland, France, Germany, Greece, Ireland, Italy, Latvia, Lithuania, Luxembourg,
Malta, Netherlands, Portugal, Slovakia, Slovenia, Spain).

Feel free to edit this Q&A, review it or improve it!


HOW TO VERIFY AN IBAN NUMBER? (VALIDITY CHECK)

The algorithm checks the country code first among countries accepting IBAN
(ISO-13616 norm).

Example: FR for France, other letters for foreign countries

The algorithm starts by moving the 4 first characters (country code and checksum
key) at the end of the IBAN and set the key to 2 digits 00.

Example: An invented IBAN: BA51 1234 5678 90DE F123,
it becomes 1234 5678 90DE F123 BA00

Replace each letter in the IBAN by its rank in the alphabet + 9. So A=10, B=11,
C=12, etc. Z=35

Example: IBAN becomes 1234567890131415123111000

Calculate the value of this big number modulo 97 and subtract the result to 98
in order to get the control key.

Example: 1234567890131415123101100 mod 97 = 47 and 98-47 = 51. The checksum key
is 51.

Check if the two 2 characters after the country code are 51, if yes the IBAN
passes validation.

It may be envisaged to perform the verification of the existence of the bank
code and the account number, this operation requires adequate databases.

The corresponding regular expression (which is not sufficient) is:
[A-Z]{2}[0-9]{2}[A-Z0-9 ]{10,35}

Feel free to edit this Q&A, review it or improve it!


A FORM IS ASKING ME MORE CHARACTERS, WHAT TO DO?

Sometimes it is asked to concatenate both IBAN and BIC codes (IBAN+BIC or
BIC+IBAN).

Ask a new question


SOURCE CODE

dCode retains ownership of the "IBAN Number" source code. Except explicit open
source licence (indicated Creative Commons / free), the "IBAN Number" algorithm,
the applet or snippet (converter, solver, encryption / decryption, encoding /
decoding, ciphering / deciphering, translator), or the "IBAN Number" functions
(calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode /
encode, translate) written in any informatic language (Python, Java, PHP, C#,
Javascript, Matlab, etc.) and all data download, script, or API access for "IBAN
Number" are not public, same for offline use on PC, tablet, iPhone or Android !
The copy-paste of the page "IBAN Number" or any of its results, is allowed as
long as you cite the online source https://www.dcode.fr/iban-check
Reminder : dCode is free to use.


CITE DCODE

The copy-paste of the page "IBAN Number" or any of its results, is allowed as
long as you cite dCode!
Cite as source (bibliography):
IBAN Number on dCode.fr [online website], retrieved on 2022-07-12,
https://www.dcode.fr/iban-check


NEED HELP ?

Please, check our dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!


QUESTIONS / COMMENTS

Write a message

Thanks to your feedback and relevant comments, dCode has developed the best
'IBAN Number' tool, so feel free to write! Thank you!

Summary
 * IBAN number checker (International)
 * What is an IBAN? (Definition)
 * How to verify an IBAN number? (Validity check)
 * A form is asking me more characters, what to do?

Similar pages
 * Luhn Number Checksum
 * BBAN Number
 * French ID Card
 * DCODE'S TOOLS LIST

Support
 * Paypal
 * Patreon
 * More

 
Forum/Help

Keywords
iban, account, number, sum, control, checksum, modulo, mod, 97, validation,
digit, key, iso13616, 13616, check
Links
 * Contact
 * About dCode
 * dCode App
 * Wikipedia


https://www.dcode.fr/iban-check
© 2022 dCode — The ultimate 'toolkit' to solve every games / riddles /
geocaching / CTF.
▲  
Feedback