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I run an ISP with a block of IPv4 address space. Can I just convert that into IPv6 space?

April 26, 2017address block convert IPv4 IPv6 ISP run

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I run an ISP with a block of IPv4 address space. Can I just convert that into IPv6 space?

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You will need to obtain new IPv6 addresses in addition to your existing IPv4 address blocks. IPv4 address space that you have today can still be used in a dual IPv4-IPv6 environment. The RIRs all have policies that make it straightforward for an ISP with IPv4 space to apply for and receive IPv6 address space. You should contact the RIR for your region or your ISP for more information on how to acquire IPv6 addresses. It may also be good idea to use this opportunity to redesign your addressing plan, taking advantage of the greater flexibility of IPv6 to assign subscriber address blocks more optimally. Similarly, customer sites may use IPv6 as an opportunity to redesign and optimise their internal addressing plan. However, it may be possible to re-use an existing subnet addressing plan within the new IPv6 block, if that is preferred.