Is there any good reason to support this notation for URLs?
Do you think this format would be faster to parse than regular IPs?
Its A.B.C.D with A255^3 + B255^2 + C255^1 + D255^0.
Used to get around filters a long time ago but broke as most sites host multiple domains and it needs your browsers 'hostname' it sends it as part of the request to actually return the right site/page.