Credit Card Metadata and Validator


There’s a service that validates the credit card number and returns the metadata.

The requisition is via http and returns a json. Just like this:

curl -H "Accept-Version: 3" ""
  "number": {
    "length": 16,
    "luhn": true
  "scheme": "visa",
  "type": "debit",
  "brand": "Visa/Dankort",
  "prepaid": false,
  "country": {
    "numeric": "208",
    "alpha2": "DK",
    "name": "Denmark",
    "emoji": "🇩🇰",
    "currency": "DKK",
    "latitude": 56,
    "longitude": 10
  "bank": {
    "name": "Jyske Bank",
    "url": "",
    "phone": "+4589893300",
    "city": "Hjørring"

The link:

But if you want regex for the most common credit card brands, check below.

    const elo = /((((636368)|(438935)|(504175)|(451416)|(636297)))[0-9]{4}$)|(((5067)|(4576)|(4011))[0-9]{8}$)$/;
    const visa = /^4[0-9]{12}(?:[0-9]{3})$/;
    const master = /^5[1-5][0-9]{14}$/;
    const amex = /^3[47][0-9]{13}$/;
    const diners = /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/;
    const discover = /^6(?:011|5[0-9]{2})[0-9]{12}$/;
    const jcb = /^(?:2131|1800|35\d{3})\d{11}$/;
That’s it!

Admin-lte height bug (fixed)

Admin-Lte template

Admin-Lte template


Desenvolvendo um Web App para a Divisão de Homicídios de Niterói São Gonçalo (DH-NSG) utilizando React e o template do Admin-lte vinha enfrentando um bug na visualização da página. O conteúdo era carregado apenas até a metade da página.

Depois de ter desistido por um tempo de corrigi-lo, descobri hoje um workaround em css que corrige este bug.


  .wrapper {
    /*min-height: 100%;
    position: relative;
    overflow: hidden;*/
    width: 100%;
    min-height: 100%;
    height: auto !important;
    position: absolute;
Depois de tentar algumas snippets este funcionou e com isso espero ajudar. Até…

React Native keyboard over InputText

During creating a form in React Native I faced a issue with the android keyboard. It override the text field, so I could not see what is the enter of the field.

So I found the solution, actually, three. I adopted the first one, just changing the View by KeyboardAvoidingView component.

Here is the complete solution.

Very cool and useful.

Axios Network Error

Android error image.

Trying to figure out what the hell was going on with a axios get request, I discover by axios – npm documentation a better or more complete way tho handle with error.

This is how:

  .catch(function (error) {
    if (error.response) {
      // The request was made and the server responded with a status code
      // that falls out of the range of 2xx
    } else if (error.request) {
      // The request was made but no response was received
      // `error.request` is an instance of XMLHttpRequest in the browser and an instance of
      // http.ClientRequest in node.js
    } else {
      // Something happened in setting up the request that triggered an Error
      console.log(Error, error.message);
If we log just the error, it will display just the Network Error message on log.
By the way the error was this one: “_response”: “ Trust anchor for certification path not found.”,
I was trying to access a https local server. I resolved by change the protocol of the req to http.
Hope I can help!

Quem é ?

Segue os dados da hospedagem do infame site que fornece informações pessoais publicamente pela internet:

Domain Name:
Registry Domain ID: 4267933f0d484676b1c51fe7bec6fd2a-RSIDE
Registrar WHOIS Server:
Registrar URL:
Updated Date: 2017-06-06T08:18:14Z
Creation Date: 2017-05-11T19:30:36Z
Registry Expiry Date: 2018-05-11T19:30:36Z
Registrar: NETIM sarl
Registrar IANA ID: 1519
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Status: clientTransferProhibited
Registry Registrant ID: c7c277e5830240ce8b00f0a836dc5b45-RSIDE
Registrant Name: ricardo torres
Registrant Organization: bytecode tech inc
Registrant Street: al rio negro 545
Registrant City: SAO PAULO
Registrant State/Province:
Registrant Postal Code: 06454001
Registrant Country: BR
Registrant Phone: 55.137458745
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email:
Registry Admin ID: 857f0565e0374fcf9bc81020c5a16303-RSIDE
Admin Name: ricardo torres
Admin Organization: bytecode tech inc
Admin Street: al rio negro 545
Admin City: SAO PAULO
Admin State/Province:
Admin Postal Code: 06454001
Admin Country: BR
Admin Phone: 55.937458745
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email:
Registry Tech ID: bf07e26654264ccc923f72fed7109b43-RSIDE
Tech Name: ricardo torres
Tech Organization: bytecode tech inc
Tech Street: al rio negro 545
Tech City: SAO PAULO
Tech State/Province:
Tech Postal Code: 06454001
Tech Country: BR
Tech Phone: 55.937458745
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email:
Name Server:
Name Server:
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form:
Last update of WHOIS database: 2017-06-08T14:59:16Z

Java @Schedule error

I was trying to scheduling a method from a EJB class using the @Schedule annotation of the javax.ejb package.

@Schedule(second=”*/5″, minute=”*”, hour=”*”)
public void listarMsgs()
logger.log(Level.INFO, “do something…”);

But every time the method was called it  appeared a error like this:

Failed to reinstate timer…

Googling for about some time I figure out that it was a kind bug of the application server, JBoss Wildfly. I’m using the 9 version.

The solution was clear the folder under the standalone/data/timer-service-data that is where the server creates the xml of the schedule job.

Javascript is awesome

Javascript logo.

I’m very excited about studying Javascript on the mission of expand my knowledges at front-end. The principal goal is use Javascript at my Java back-end projects.

So, two things I really liked on javascript so far is:

  1. template string;
  2. spread operator.

The first concept lets a array be used as params of methods, on a very easy and functional way.

The second one helps on format messages that uses dynamics values, as variables. We can just reference the value inside a string pattern, marked with the ` character.

See the example…

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