Paessler PRTG Monitoring System database file (.db)
.db file signature | application/octet-stream
Windows 7 thumbcache_sr.db or other thumbcache file(except thumbcache_idx.db)
Magic Bytes
Offset 0
53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 00
Sources: Wikipedia, Gary Kessler
All Known Signatures
9 signature variants are documented for .db files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 00 | 0 | Wikipedia, Gary Kessler |
| 00 06 15 61 00 00 00 02 00 00 04 D2 00 00 10 00 | 0 | Gary Kessler |
| 00 3B 05 00 01 00 00 00 | 0 | Gary Kessler |
| 43 4D 4D 4D 15 00 00 00 | 0 | Gary Kessler |
| 44 42 46 48 | 0 | Gary Kessler |
| 49 4D 4D 4D 15 00 00 00 | 0 | Gary Kessler |
| CF FA ED FE | 0 | Gary Kessler |
| D0 CF 11 E0 A1 B1 1A E1 | 0 | Gary Kessler |
| 51 20 BE FF EF FF FF FF 04 00 00 00 | 0 | Gary Kessler |
Extension
.db
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .db files in Python
def is_db(file_path: str) -> bool:
"""Check if file is a valid DB by magic bytes."""
signature = bytes([0x53, 0x51, 0x4C, 0x69, 0x74, 0x65, 0x20, 0x66, 0x6F, 0x72, 0x6D, 0x61, 0x74, 0x20, 0x33, 0x00])
with open(file_path, "rb") as f:
return f.read(16) == signatureHow to validate .db files in Node.js
function isDB(buffer: Buffer): boolean {
const signature = Buffer.from([0x53, 0x51, 0x4C, 0x69, 0x74, 0x65, 0x20, 0x66, 0x6F, 0x72, 0x6D, 0x61, 0x74, 0x20, 0x33, 0x00]);
return buffer.subarray(0, 16).equals(signature);
}How to validate .db files in Go
func IsDB(data []byte) bool {
signature := []byte{0x53, 0x51, 0x4C, 0x69, 0x74, 0x65, 0x20, 0x66, 0x6F, 0x72, 0x6D, 0x61, 0x74, 0x20, 0x33, 0x00}
if len(data) < 16 {
return false
}
return bytes.Equal(data[:16], signature)
}API Endpoint
/api/v1/db
curl https://filesignature.org/api/v1/db
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .db file?
A .db file is a Paessler PRTG Monitoring System database file file. Windows 7 thumbcache_sr.db or other thumbcache file(except thumbcache_idx.db)
What are the magic bytes for .db files?
The magic bytes for Paessler PRTG Monitoring System database file files are 53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .db file?
To validate a .db file, read the first bytes of the file and compare them against the known magic bytes (53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 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 .db files?
There is no officially registered MIME type for .db files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .db files?
Paessler PRTG Monitoring System database file (.db) 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.