IPv6 introduces a 128 bit IP address for both source and destination address fields.

This means that there are 2^128 addresses possible with that many bits.

2^128 is about 340,282,366,920,938,000,000,000,000,000,000,000,000

I have long contended that I have no idea how to read that number.  I usually say something like "a lot".

But - thanks to one of my students (Thank You Bobby) the answer is now provided:

"Three hundred forty undecillion, two hundred eighty two decillion, three hundred sixty six nonillion, nine hundred twenty octillion, nine hundred thirty eight septillion."

One word - WOW!

 

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