# HID 35bit Corporate 1000

Everything you need to understand HID 35bit Corporate 1000

## Card format Overview

A proprietary 35-bit card format used in access control systems, featuring a unique structure composed of 12-bit site code and 20-bit card number, and 3 parity bits (even and odd), allowing for easy management and avoiding card number duplication for secure, contactless access.

## HID 35bit Corporate 1000 format properties

### Site Code

12 bits. The facility code range is 0 to 4,095.

### Card Number

20 bits. A unique serial number (0-1,048,575) for each card within that facility code.

### Even parity

Even Parity for Even parity over bits 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34.

### Odd parity

Odd Parity for Odd parity over bits 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33.

### Odd parity

Odd Parity for Odd parity over bits 0-33.

### Generate examples

Put in the values for this card format, we'll generate the results in a few different formats.

### Site Code

### Card Number

Get examples

#### Here's your example

| Format | Value |
| --- | --- |
| Hex | 40C8000C9<br>Copy |
| Decimal | 17389584585<br>Copy |
| Binary | 10000001100100000000000000011001001<br>Copy |