I've seen octal and character substitution tricks in URLs before, but I didn't know you could use hexadecimal for the IP in a URL. Sure enough, this: http://0xd390cc87/ is exactly equivalent to this: http://211.144.204.135/ (D3 = 211, 90 = 144, CC = 204, and 87 = 135) Just found out now in a piece of stupid flippin' phishing email that was sent to me. Danged Shanghai-based swindlers ......