Networking

Can servers derive the user IPv6 block of an address?

ISP commonly assign as much as a /56 prefix with 272 addresses to private users (possibly even more).

If you don’t incidentally know the specific allocation scheme for an address range, then no, you can’t derive a user’s address range, you can only guess – it’s somewhere between /56 and /64 (4.7 sextillion to 18 quintillion addresses).

Some ISPs reportedly use longer prefixes/smaller ranges in spite of rigid recommendations. Also note that corporate users may be using substantially smaller allocations.


Source link

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Back to top button

Adblock Detected

Please consider supporting us by disabling your ad blocker