Chez moi ça fonctionne, et j'ai une page qui commence comme ceci:
<!DOCTYPE html>
<html lang="fr">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta property="og:url" content="https://www.laurentwillen.be/concours/concours-gagnez-2-projecteurs-portables-et-une-enceinte-bluetooth/" />
<meta charset="UTF-8">
<meta http-equiv="content-language" content="fr_FR">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" href="https://images.laurentwillen.be/sites/21/2020/09/favicon-32.png" sizes="32x32">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link rel="stylesheet" media="print" onload="this.onload=null;this.removeAttribute('media');" href="https://fonts.googleapis.com/icon?family=Material+Icons|Open+Sans&display=swap">
<noscript>
<link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons|Open+Sans">
</noscript>
<meta property="og:type" content="article" />
<meta property="og:image:width" content="1500"/>
<meta property="og:image:height" content="468"/>
<meta property="og:image" content="" />
<style>
body
{
width:100%;
height:100%;
margin:0px;
padding:0px;
...
Votre IPv4 pointe vers le CDN, et l'IPv6 ne pointe pas vers le CDN.
contest.heytelecom.be has address 213.186.33.105
contest.heytelecom.be has IPv6 address 2001:41d0:1:1b00:213:186:33:18