<div style="max-width:420px;margin:auto;padding:20px;border:1px solid #ddd;border-radius:8px;text-align:center;font-family:Arial;">

<h3>Check Service Availability</h3>

<input type="text" id="pincode" placeholder="Enter your PIN code" maxlength="6">

<button onclick="checkPin()">Check</button>

<p id="location"></p>

</div>

<script>

function checkPin(){

var pin = document.getElementById("pincode").value;

fetch("https://api.postalpincode.in/pincode/"+pin)

.then(res => res.json())

.then(data => {

if(data[0].Status == "Success"){

var place = data[0].PostOffice[0];

document.getElementById("location").innerHTML =
"Service Available in " + place.District + ", " + place.State;

}else{

document.getElementById("location").innerHTML = "Invalid Pincode";

}

});

}

</script>