Just for clarity - ARIN’s fee schedule is such that ISP customers (i.e. those with registration service plans) pay an annual services fee based on their higher category of IPv4 or IPv6 resources – i.e. those with IPv4 resources can obtain a corresponding size of IPv6 resources without any change in size category or increase in their annual fee. [Also worth noting - as of January 2022, all end-user customers are moving to the same registration services plan, and similarly those with just IPv4 number resources be able to obtain corresponding IPv6 resources without change to their annual fee.] None of the above is a comment or recommendation one way or the other one what address space to use for your US datacenter; it’s solely for clarity regarding the ARIN cost side. FYI, /John John Curran President and CEO American Registry for Internet Numbers On 4 Dec 2021, at 12:06 AM, David Guo via NANOG <nanog@nanog.org<mailto:nanog@nanog.org>> wrote: Both options work, there’s no need to pay additional fee to ARIN unless you need something like unblock some websites. You can of course use RIPE IP and ASN in United Sates. xTom GmbH ________________________________ From: NANOG <nanog-bounces+david=xtom.com@nanog.org<mailto:nanog-bounces+david=xtom.com@nanog.org>> on behalf of Edvinas Kairys <edvinas.email@gmail.com<mailto:edvinas.email@gmail.com>> Sent: Saturday, December 4, 2021 4:44:58 AM To: NANOG Operators' Group <nanog@nanog.org<mailto:nanog@nanog.org>> Subject: questions about ARIN ipv6 allocation Hello, We're setting up IPv6 network is USA. Our company has branches and different legal entities in EU and US. We've some ipv6 PI subnets already allocated by RIPE for EU datacenters. I have few questions: 1) Is it possible to reuse some portion of RIPE allocated ipv6 addresses in USA ? Or we need to ask for the new ones by requesting in ARIN ? 2) Can i request in ARIN just ipv6 subnets for USA DCs, but to use the same AS number which was allocated by RIPE in EU ? Thanks