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Logical File Evidence Format (.lxnn)

.lxnn file signature | application/octet-stream

Logical File Evidence Format (EWF2-Lx01), used in Expert Witness Compression Format (EWF)version 2 for Guidance Software Encase.nnare the segment sequence number, taking on values 00..99, AA, AB...AZ, BA, BB...BZ, etc.See theEWF2 specification.

Safe

Magic Bytes

Offset 0
4C 45 46 32 0D 0A 82 00

Sources: Gary Kessler

Extension

.lxnn

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .lxnn files in Python

Python 
def is_lxnn(file_path: str) -> bool:
    """Check if file is a valid LXNN by magic bytes."""
    signature = bytes([0x4C, 0x45, 0x46, 0x32, 0x0D, 0x0A, 0x82, 0x00])
    with open(file_path, "rb") as f:
        return f.read(8) == signature

How to validate .lxnn files in Node.js

Node.js 
function isLXNN(buffer: Buffer): boolean {
  const signature = Buffer.from([0x4C, 0x45, 0x46, 0x32, 0x0D, 0x0A, 0x82, 0x00]);
  return buffer.subarray(0, 8).equals(signature);
}

How to validate .lxnn files in Go

Go 
func IsLXNN(data []byte) bool {
    signature := []byte{0x4C, 0x45, 0x46, 0x32, 0x0D, 0x0A, 0x82, 0x00}
    if len(data) < 8 {
        return false
    }
    return bytes.Equal(data[:8], signature)
}

API Endpoint

GET /api/v1/lxnn
curl https://filesignature.org/api/v1/lxnn

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .lxnn file?

A .lxnn file is a Logical File Evidence Format file. Logical File Evidence Format (EWF2-Lx01), used in Expert Witness Compression Format (EWF)version 2 for Guidance Software Encase.nnare the segment sequence number, taking on values 00..99, AA, AB...AZ, BA, BB...BZ, etc.See theEWF2 specification.

What are the magic bytes for .lxnn files?

The magic bytes for Logical File Evidence Format files are 4C 45 46 32 0D 0A 82 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .lxnn file?

To validate a .lxnn file, read the first bytes of the file and compare them against the known magic bytes (4C 45 46 32 0D 0A 82 00) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .lxnn files?

There is no officially registered MIME type for .lxnn files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .lxnn files?

Logical File Evidence Format (.lxnn) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.