How a particular ISP get it's IP ? Is there any centralized authority to distribute IP s ?
- RIPE (Europe, Middle East, Central Asia)
- AfriNIC (Africa)
- APNIC (Asia-Pacific)
- ARIN (North America)
- LACNIC (Latin America)
Each of these RIRs is responsible for assignments to ISPs in the region they service. They all have their own rules and procedures for obtaining IP-addresses.