Preserved Topic: Totall possible Number Of IP Numbers (Page 1 of 1)

Hey,
ip is in a format of x,x,x,x where x is between 0-255.

mhh, should the forumular to get all possible IPs be 256^256^256^256?
(0.0.0.1), (0.0.0.2), (0.0.0.3) .... (255.255.255.253), (255.255.255.254), (255.255.255.255)

this looks like an astraunomic number!

it may look like an astronomic number.. but it's not going to be enough. i remember reading an article over 2 years ago that was addressing the fact that we're going to be screwed unless we move from 12 to something like 24 digits.. or 36 or 48.

back in the day companies like ibm would be assigned an enormous amount of ip addresses because they figured they'd never be needed... like close to a million static ip address is almost what i'm recalling, but i could be wrong.

regardless, there will be a shortage soon enough if the standard isn't changed.

cheers.mikey.milker

It's only 256*256*256*256. It's not exponential.

so...in theory.. theres

256256256256 ip addresses?


its like 2 places past billions, not real sure..

256 x 256 x 256 x 256
=
4,294,967,296

I think..

- Dan -

dan: you are correct sir, for a prize of $100 in effigy. 4.2billion with large portions unused for actual valid internet addresses, leads the way to IPv6 which i think is 64bits, which is some HUGE number that i don't want to think about without taking my medication.

analog

You might have been more accurate to say 4.3 billion, analog, if you're going to round... =D

<edit>
Hey, if you want a *real* challenge, find out the number of possible pictures that you can have in a resolution of 1024 x 768, considering that each pixel can have *any* red, green, or blue value.
(Of course, most of those pictures would be very staticy, but a large number would also be quite interesting. I wonder what the ratio of (actual, cool looking pictures that you would get) to (color noise) is?)
</edit>

[This message has been edited by Slime (edited 15-10-2000).]

If it's true RGB than each pixel has 256^3=16,777,216 possible colors. There are 1024x768=786,432 pixels. So the possible # of combinations is 16,777,216 ^ 786,432 which is a ridiculously huge number to type out, but if I had a calculator big enough maybe I could compute it. But say we conservatively round down to 10,000,000 possible colors, then it would be 1 with 5,505,024 0s after it.

However there maybe 4.2 billion however this is not nearly enough considering the future uses of IPs. There are already "wired" houses using IPs for everything down to the light switches

Ergo IP version 6 which has been spec'ed out and is active but still waiting for a hardware implentation


Walking the Earth like Kane

how I get 256^256^256^256 from?
let's make it simple, then use the same rule that we used on the compliated one

guess the ip is only 2 parts and max is 3, example 3.3
it can be:
1.1
1.2
1.3
2.1
2.2
2.3
3.1
3.2
3.3
well, 3x3 still works, but if the max is 4, imagine it. ...., well hell, I am not going to list it, check it out, I used a script to generate it
http://64.188.211.32/ip.htm
if according to what you said, dan, it's 4x4x4=64, but no, it's 124. and if according 4^4^4, it's wrong too, 4^4^4 is 4294967296. shit. and remember, that's only 3 levels x.x.x, if we go to x.x.x.x 4 levels, that would encrease like a bitch, and also remembeer, the max is only 4, if we go to 256, it's going to increase likea Phuk... bch. I'll go ask my math teacher on monday.
I am the worst one in my ap calc class, sigh.

And I do'nt want to write a 4 level script with max = 256, my computer is going to crash.

my webserver is still in beta version, if it won't link to you, tell me.

[This message has been edited by galaxal (edited 15-10-2000).]

hi galaxal,
i don't agree with you

guess three-part x.x.x and numbers from 0..9
count up:
0.0.0
0.0.1
...
9.9.9
--> there are 1000 possible
10^10^10 != 1000
but
10x10x10 == 1000 <img border=0 align=absmiddle src="http://www.ozones.com/forum/wink.gif">

by the way,
ip-address are ranged in a,b,c - classes
followed by network id and host id.

read: computer networks: a.s.tanenbaum
at Amazon: http://www.amazon.com/exec/obidos/ASIN/0133499456/o/qid=971610113/sr=2-1/104-9246154-7485502

cu,tea

with your example: there should
be 5x5x5 == 125 and you forgot to count
0 too.

OHhhhh, I see, yes, 256x256x256x256 is right!!!
thank you you guys, you guide me to the truth.

well, don't you think 4294967296 ips are way too much limited? and also, we did'nt subtract the unusable public IPs from 4294967296, such as 0.0.0.0 and 192.168.0.x....

You guys seem to be forgetting one important thing....
IP numbers are assigned to individual users and individual servers, they are not random. That is to say, it's like an address. Pretend (for the sake of a simplified arguement) that the first set of numbers in an IP identifies a particular server (actually, it is the first two).
e.g.
187.*.*.* = foo.com
In this case, the available number of IP addresses would run out after the first 256 servers in the world EVEN IF THEY EACH HAD ONLY ONE USER
e.g.
foo.com has 11 users attatched to it. In this case 187.0.0.1 --> 187.0.0.11 are all taken
but you can't take the remaining wasted IP numbers and give them to any other server because the 187 header number is propietary of THAT particular server. The rest of the IP number just lie there --never being used.

Thus, the problem with the IP numbers running out lies in the way they are distributed and the fact that so many of them are wasted, not so much in the surpluss of users. If that were the case, it wouldn't be a problem as I can assure you that 4.3 billion member of the world's population would never be online at the same time anyway...



tskull@techie.com">
"You don't have to be crazy to work here, but it helps." --Anonymous
ICQ: 67751342

Good point, Petskull, but we are talking about the maximium possibilities of IP numbers, not saying how they are used or wasted. good luck in yourlife!!!

um... did I forget to get you a birthday present or something?

my point was that they are running out faster than they would be if they were randomly assigned...



tskull@techie.com">
"You don't have to be crazy to work here, but it helps." --Anonymous
ICQ: 67751342

hahaha, don't be mad.
no offending.

this forum is fun, so many section and I can hang around here half a day.

Hah, the arrogance of the first division of the IP numbers meant that some outfits that were big only in their heads got class A addresses, with an absurd number of IPs, and companies that really needed them (Like ISPs,) have to fight over class C licences with not enough. Here in Europe we simply do not have enough IPÅ numbers to go around, I'd have to pay a bloody fortune to get one for my home connection, where in the states I could pay an extra $5.00. Sheesh. I want my static IP!!!

Your pal, -doc-

hye... check out what I stumbled onto... talk about your coincidences...

5. What is IPv6?
IP Version 6 (IPv6) is the newest version of IP, sometimes called
IPng for "IP, Next Generation". IPv6 is fairly well defined but is
not yet widely deployed. The main differences between IPv6 and the
current widely-deployed version of IP (which is IPv4) are:
o IPv6 uses larger addresses (128 bits instead of 32 bits in
IPv4) and so can support many more devices on the network, and
o IPv6 includes features like authentication and multicasting
that had been bolted on to IPv4 in a piecemeal fashion over the years.
Information on IPv6 can be found on the IPv6 home page at
<http://playground.sun.com/pub/ipng/html/ipng-main.html>


I found that in http://www.faqs.org/faqs/internet/tcp-ip/tcp-ip-faq/part1/
neato-dorito...


"You don't have to be crazy to work here, but it helps." --Anonymous
ICQ: 67751342

[This message has been edited by Petskull (edited 16-10-2000).]