IPv6 DHCP scope question

I have an ipv6 network 2001:db8:85a3:: /80
I want to setup a DHCPv6 scope.

Starting range 2001:db8:85a3::2 /80 ending range 2001:db8:85a3::9999 /80
This scope above can basically give out 9998 ipv6 address.
Please confirm if  this is correct.

Also say I want to add 100 more ipv6 address to my above scope how will it look.
Starting range 2001:db8:85a3::2 /80  ending range please advice
ciscosuppAsked:
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Don JohnstonInstructorCommented:
Starting range 2001:db8:85a3::2 /80 ending range 2001:db8:85a3::9999 /80
This scope above can basically give out 9998 ipv6 address.
That depends. If you're talking hex, then yes.  
However, if your talking decimal, then it's 39,319 addresses.
Also say I want to add 100 more ipv6 address to my above scope how will it look.
Starting range 2001:db8:85a3::2 /80  ending range please advice
I'm going to assume you want to add 100 (decimal) hosts to your range.
So it would be 2001:db8:85a3::2 /80 ending range 2001:db8:85a3::99FD /80
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ciscosuppAuthor Commented:
thanks
how would my scope look  to give out only 1000 ipv6 address please advice

Starting range 2001:db8:85a3::2 /80 ending range
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Don JohnstonInstructorCommented:
2001:db8:85a3::2 /80 - 2001:db8:85a3::3EA /80

1000d = 3E8h

The windows calculator has a "programmer" view that lets you switch between decimal and hex.
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