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<!DOCTYPE html>

<head>

<title>BD Number Format Checker + Old Robi Series Generator</title>

<style>

:root{--bg:#0b1222;--card:#111827;--muted:#94a3b8;--txt:#e5e7eb;--accent:#22c55e;--accent2:#3b82f6}

*{box-sizing:border-box}

body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;background:linear-gradient(180deg,#0b1222,#0f172a);color:var(--txt)}

.wrap{max-width:1100px;margin:24px auto;padding:16px}

.card{background:rgba(17,24,39,.85);border:1px solid rgba(148,163,184,.25);backdrop-filter:blur(6px);border-radius:18px;padding:20px;box-shadow:0 10px 30px rgba(0,0,0,.35)}

h1{font-size:26px;margin:0 0 6px}

h2{font-size:18px;margin:18px 0 10px;color:#d1d5db}

p, label, small{color:var(--muted)}

.grid{display:grid;gap:12px}

@media(min-width:960px){.grid.cols-2{grid-template-columns:1fr 1fr}}

@media(min-width:960px){.grid.cols-3{grid-template-columns:1.1fr .9fr .9fr}}

.row{display:flex;gap:10px;flex-wrap:wrap}

input, textarea, select{width:100%;padding:12px 14px;border-radius:12px;border:1px solid rgba(148,163,184,.25);background:#0b1020;color:var(--txt);outline:none}

input:focus, textarea:focus, select:focus{border-color:var(--accent2)}

textarea{min-height:160px;resize:vertical}

.btn{padding:11px 14px;border-radius:12px;border:1px solid rgba(148,163,184,.25);background:#0b1020;color:var(--txt);cursor:pointer;transition:.2s}

.btn:hover{transform:translateY(-1px)}

.btn.primary{background:linear-gradient(135deg,#22c55e,#16a34a);border:none;color:white}

.btn.ghost{background:#0b1020}

.btn.warn{background:linear-gradient(135deg,#ef4444,#dc2626);border:none;color:white}

.muted{color:var(--muted)}

.badge{display:inline-block;padding:6px 10px;border-radius:999px;background:#0b1020;border:1px solid rgba(148,163,184,.25);color:var(--muted);font-size:12px}

.panel{border:1px solid rgba(148,163,184,.25);border-radius:14px;padding:12px;background:#0b1020}

.listbox{min-height:220px}

.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}

@media(min-width:720px){.stats{grid-template-columns:repeat(4,1fr)}}

.kpi{background:#0b1020;border:1px solid rgba(148,163,184,.25);border-radius:14px;padding:10px}

.kpi b{font-size:18px;color:#fff}

table{width:100%;border-collapse:collapse}

th, td{border-bottom:1px solid rgba(148,163,184,.18);padding:8px 6px;text-align:left;font-size:14px}

th{color:#cbd5e1}

.footer{margin-top:10px;color:var(--muted);font-size:12px}

</style>

</head>

<body>

<h1>Bangladesh Number Format Checker + Old Robi Series Generator</h1>

<p>এই টুলটি <b>ফরম্যাট চেক</b> ও <b>পুরনো সিরিজ থেকে ডেমো নম্বর জেনারেট</b> করার জন্য। এটি <b>ফেসবুকে আছে/নেই</b> এমন কোনো তথ্য <u>চেক করে না</u> এবং <u>করতে পারবে না</u>। প্রাইভেসি রুলস অনুযায়ী এটা অনুমোদিত নয়।</p>

<label for="numbers">নিচে নাম্বার দিন (এক লাইন = এক নাম্বার)। +88 / 88 / 0 — সবই অটো-নরমালাইজ হবে:</label>

<button class="btn primary" id="validate">Validate</button>

<button class="btn ghost" id="copyValid">Copy Valid</button>

<button class="btn ghost" id="exportValid">Export Valid CSV</button>

<button class="btn warn" id="clearAll">Clear</button>

</div>

<div class="kpi"><div class="muted">মোট ইনপুট</div><b id="k_total">0</b></div>

<div class="kpi"><div class="muted">ভ্যালিড</div><b id="k_valid">0</b></div>

<div class="kpi"><div class="muted">ইনভ্যালিড</div><b id="k_invalid">0</b></div>

<div class="kpi"><div class="muted">ডুপ্লিকেট বাদ</div><b id="k_dedup">0</b></div>

</div>

<h3 style="margin-top:14px;color:#d1d5db">ভ্যালিড নাম্বার (নরমালাইজড)</h3>

<h3 style="margin-top:14px;color:#d1d5db">ইনভ্যালিড / কারণ</h3>

<thead><tr><th>ইনপুট</th><th>কারণ</th></tr></thead>

</table>

</div>

<h2>2) Old Robi Series Generator (Demo)</h2>

<label>সিরিজ সিলেক্ট করুন (ডিফল্ট পুরনো সিরিজ):</label>

<option value="016">016 (Airtel BD)</option>

</select>

<div>

</div>

<div>

<label for="g_len">মোট ডিজিট</label>

</div>

<div>

</select>

</div>

<button class="btn primary" id="gen">Generate</button>

<button class="btn ghost" id="exportGen">Export CSV</button>

<span class="badge" id="g_stats">Ready</span>

</div>

নোট: এগুলো <b>শুধু ডেমো</b> নম্বর। এগুলো কারো সঙ্গে যোগাযোগ/ভেরিফিকেশন চেষ্টা করবেন না।

</div>

⚠️ ডিসক্লেমার: এই টুল কোনোভাবেই Facebook/কোনো সার্ভিসে নাম্বার মিলিয়ে দেখার চেষ্টা করে না। এমন চেষ্টা করা প্রাইভেসি ও টার্মস ভায়োলেশন।

</div>

// ------- Utils -------

const $ = id => document.getElementById(id);

const OPERATORS = {

'013':'Grameenphone','017':'Grameenphone',

'014':'Banglalink','019':'Banglalink',

'015':'Teletalk',

'016':'Airtel',

'018':'Robi'

};

function normalizeOne(input){

const raw = String(input).trim();

if(!raw) return null;

// keep digits only

let d = raw.replace(/\D/g,'');

// Remove leading country code 880 or +880

if(d.startsWith('880')) d = d.slice(3);

// Ensure leading 0 for local format

if(d.length === 10 && !d.startsWith('0')) d = '0' + d;

// Final checks

if(d.length !== 11) return {ok:false, value:raw, reason:'ডিজিট ১১ না'};

const op = d.slice(0,3);

if(!OPERATORS[op]) return {ok:false, value:raw, reason:'অকার্যকর প্রিফিক্স'};

return {ok:true, value:d, operator:OPERATORS[op]};

}

function parseLines(text){

return text.split(/\r?\n/).map(s=>s.trim()).filter(Boolean);

}

function downloadCSV(filename, rows){

const blob = new Blob([rows.join('\n')], {type:'text/csv;charset=utf-8;'});

const a = document.createElement('a');

a.href = URL.createObjectURL(blob);

a.download = filename;

document.body.appendChild(a);

a.click();

document.body.removeChild(a);

}

// ------- Validator -------

$('loadCsv').addEventListener('click', ()=>{

const file = $('csvFile').files?.[0];

if(!file) return alert('CSV বা TXT ফাইল সিলেক্ট করুন');

const fr = new FileReader();

fr.onload = () => { $('numbers').value = String(fr.result||''); };

fr.readAsText(file);

});

$('validate').addEventListener('click', ()=>{

const lines = parseLines($('numbers').value);

const badBody = $('badTable').querySelector('tbody');

badBody.innerHTML = '';

const validSet = new Set();

const seen = new Set();

let invalid = 0;

let dedup = 0;

for(const line of lines){

if(seen.has(line)) { dedup++; continue; }

seen.add(line);

const res = normalizeOne(line);

if(!res || !res.ok){

invalid++;

const tr = document.createElement('tr');

const td1 = document.createElement('td'); td1.textContent = line;

const td2 = document.createElement('td'); td2.textContent = res? res.reason : 'খালি লাইন';

tr.append(td1, td2); badBody.appendChild(tr);

} else {

validSet.add(res.value);

}

$('k_total').textContent = lines.length.toLocaleString();

$('k_valid').textContent = validSet.size.toLocaleString();

$('k_invalid').textContent = invalid.toLocaleString();

$('k_dedup').textContent = dedup.toLocaleString();

$('validOut').value = Array.from(validSet).join('\n');

});

$('copyValid').addEventListener('click', async ()=>{

const val = $('validOut').value.trim();

if(!val) return;

try{ await navigator.clipboard.writeText(val); alert('Copied valid numbers'); }

catch{ alert('Copy failed'); }

});

$('exportValid').addEventListener('click', ()=>{

const val = $('validOut').value.trim();

if(!val) return;

const rows = ['number'];

for(const n of val.split(/\n+/)) rows.push(n);

downloadCSV(`valid_numbers_${Date.now()}.csv`, rows);

});

$('clearAll').addEventListener('click', ()=>{

$('numbers').value=''; $('validOut').value='';

$('k_total').textContent='0'; $('k_valid').textContent='0'; $('k_invalid').textContent='0'; $('k_dedup').textContent='0';

$('badTable').querySelector('tbody').innerHTML='';

});

// ------- Generator -------

function pad(num, size){ let s=String(num); while(s.length<size) s='0'+s; return s; }

function mulberry32(a){return function(){let t=a+=0x6D2B79F5; t=Math.imul(t^t>>>15,t|1); t^=t+Math.imul(t^t>>>7,t|61); return ((t^t>>>14)>>>0)/4294967296;}}

$('gen').addEventListener('click', ()=>{

const opts = Array.from($('series').selectedOptions).map(o=>o.value);

if(opts.length===0) return alert('কমপক্ষে একটি সিরিজ সিলেক্ট করুন');

const totalLen = Math.max(7, Math.min(15, parseInt($('g_len').value||'11',10)));

const count = Math.max(1, Math.min(100000, parseInt($('g_count').value||'1000',10)));

const fmt = $('g_dash').value;

const rng = mulberry32(Date.now() & 0xffffffff);

const out = [];

const perSeries = Math.ceil(count / opts.length);

for(const prefix of opts){

const p = prefix.replace(/\D/g,'');

const remain = totalLen - p.length;

if(remain <= 0) continue;

const maxComb = Math.pow(10, remain);

const needed = Math.min(perSeries, maxComb);

const set = new Set();

while(set.size < needed){

set.add(pad(Math.floor(rng()*maxComb), remain));

}

for(const tail of set){

let n = p + tail;

if(fmt==='dash') n = n.slice(0,p.length)+'-'+n.slice(p.length);

else if(fmt==='space') n = n.slice(0,p.length)+' '+n.slice(p.length);

out.push(n);

}

$('genOut').value = out.slice(0, count).join('\n');

$('g_stats').textContent = `Generated ${Math.min(count,out.length).toLocaleString()} numbers`;

});

$('copyGen').addEventListener('click', async ()=>{

const val = $('genOut').value.trim(); if(!val) return;

try{ await navigator.clipboard.writeText(val); alert('Copied'); } catch{ alert('Copy failed'); }

});

$('exportGen').addEventListener('click', ()=>{

const val = $('genOut').value.trim(); if(!val) return;

const rows = ['number']; for(const n of val.split(/\n+/)) rows.push(n.replace(/\s|-/g,''));

downloadCSV(`generated_${Date.now()}.csv`, rows);

});

</script>

</body>

</html>

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