We are going thru a similar process.. from all of my reading, best practice discussions etc..
Here is what i have understood so far:- Residential Customers: /64 Small & Medium size Business Customers: /56 Large Business size or a multi-location Business Customer: /48 Don't skimp on allocating the subnets like we do on IPv4 Better to be 'wasteful' than have to come back to re-number or re-allocate . Regards Faisal Imtiaz Snappy Internet & Telecom ----- Original Message ----- > From: "Erik Sundberg" <esundb...@nitelusa.com> > To: nanog@nanog.org > Sent: Wednesday, October 8, 2014 9:18:16 PM > Subject: IPv6 Default Allocation - What size allocation are you giving out > > I am planning out our IPv6 deployment right now and I am trying to figure out > our default allocation for customer LAN blocks. So what is everyone giving > for a default LAN allocation for IPv6 Customers. I guess the idea of > handing a customer /56 (256 /64s) or a /48 (65,536 /64s) just makes me > cringe at the waste. Especially when you know 90% of customers will never > have more than 2 or 3 subnets. As I see it the customer can always ask for > more IPv6 Space. > > /64 > /60 > /56 > /48 > > Small Customer? > Medium Customer? > Large Customer? > > Thanks > > Erik > > ________________________________ > > CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or > previous e-mail messages attached to it may contain confidential information > that is legally privileged. If you are not the intended recipient, or a > person responsible for delivering it to the intended recipient, you are > hereby notified that any disclosure, copying, distribution or use of any of > the information contained in or attached to this transmission is STRICTLY > PROHIBITED. If you have received this transmission in error please notify > the sender immediately by replying to this e-mail. You must destroy the > original transmission and its attachments without reading or saving in any > manner. Thank you. >