Calculating CRC / Checksum of hex stream (sniffed)

Question

I'm trying a few days to get the type of the CRC with the following hex stream (sniffed with wireshark):

The Hex data i sniffed: 0000001ec001075465737431323308557365726e616d650850617373776f7264d224

This should be the DATA in HEX: 0000001ec001075465737431323308557365726e616d650850617373776f7264

So the last 4 digits are the checksum, in this case d224

I used many code snippets (PHP, java), and some online checksum calcuation sites: e.g.: http://www.scadacore.com/field-applications/programming-calculators/online-checksum-calculator/

But I don't get the correct CRC value.

Thanks!

Update 1
Here are more hex streams with CRC included (the last 4 digits):

• 0000001dc001045465737409557365726e616d65310950617373776f726431cc96
• 0000001dc001045465737409557365726e616d65320950617373776f72643289d9
• 0000001dc001045465737409557365726e616d65330950617373776f726433b51c
• 0000001dc001045465737409557365726e616d65340950617373776f7264340347
• 0000001dc001045465737409557365726e616d65350950617373776f7264353f82

Answer 1

It appears to be the ARC CRC, polynomial 0x8005, reflected, zero initial value and no final xor, if I discard the initial 0000001d on each message, and take the CRC at the end to be put in the stream in little-endian order.