How do create a formula to add IP addresses?

I am trying to make a formula that adds the last part of an IP address, such
that when I type in one IP address suchas 147.202.70.132, they automatically
fill in below sequentially with 133, 134, 135, etc. Can anyone help me with
this? Thanks.

I'd use a VBA function.

Function NextIPAddress(IP As String) As String
Dim Arr As Variant
Arr = Split(IP, ".")
Arr(UBound(Arr)) = Arr(UBound(Arr)) + 1
NextIPAddress = Join(Arr, ".")
End Function

You can then call this from a worksheet cell with code like
=NextIPAddress(A1)

You be using Excel 2000 or later in order to use the Split and
Join functions.

--
Cordially,
Chip Pearson
Microsoft MVP - Excel
Pearson Software Consulting, LLC
www.cpearson.com



"jeffreyj" > wrote in message
...
>I am trying to make a formula that adds the last part of an IP
>address, such
> that when I type in one IP address suchas 147.202.70.132, they
> automatically
> fill in below sequentially with 133, 134, 135, etc. Can
> anyone help me with
> this? Thanks.
>

Just drag and copy them down, Excel does it.

--

HTH

Bob Phillips

(replace xxxx in the email address with gmail if mailing direct)

"jeffreyj" > wrote in message
...
> I am trying to make a formula that adds the last part of an IP address,
such
> that when I type in one IP address suchas 147.202.70.132, they
automatically
> fill in below sequentially with 133, 134, 135, etc. Can anyone help me
with
> this? Thanks.
>

I never knew that.


--
Cordially,
Chip Pearson
Microsoft MVP - Excel
Pearson Software Consulting, LLC
www.cpearson.com

"Bob Phillips" > wrote in message
...
> Just drag and copy them down, Excel does it.
>
> --
>
> HTH
>
> Bob Phillips
>
> (replace xxxx in the email address with gmail if mailing
> direct)
>
> "jeffreyj" > wrote in
> message
> ...
>> I am trying to make a formula that adds the last part of an IP
>> address,
> such
>> that when I type in one IP address suchas 147.202.70.132, they
> automatically
>> fill in below sequentially with 133, 134, 135, etc. Can
>> anyone help me
> with
>> this? Thanks.
>>
>
>

"jeffreyj" wrote:
> I am trying to make a formula that adds the last part of an
> IP address, such that when I type in one IP address suchas
> 147.202.70.132, they automatically fill in below sequentially
> with 133, 134, 135, etc.

If A1 contains the initial IP address, A2 can be:

=REPLACE(A1, FIND(".",A1,FIND(".",A1,FIND(".",A1)+1)+1)+1,
LEN(A1),
MIN(255,
MID(A1, FIND(".",A1,FIND(".",A1,FIND(".",A1)+1)+1)+1, LEN(A1)) + 1))

When you copy the formula down the column, Excel will update
the relative cell references appropriately.

Obviously it would be better to put the FIND() result into a helper
cell to avoid evaluating it twice.

"Bob Phillips" wrote:
> Just drag and copy them down, Excel does it.

I shoulda remembered that myself. But on second thought, I
think Chip's suggestion of using a macro is the best idea because
it can be extended to cover the more general case of "incrementing
an IP address". The OP assumes that requires only incrementing
the last octet, which is the case for Class C IP addresses. But in
the case of a Class A, B and D IP addresses, incrementing 255
may carry over to the next octet. For example, the next address
after 1.2.3.255 is 1.2.4.0.

I know Excel does this. I need a formula so that it updates automatically.
I want to set a cell equal to an IP address in a different worksheet A. And
when I update the IP address in worksheet A, it updates it in B and fills in
the IP addresses below, automatically

"Bob Phillips" wrote:

> Just drag and copy them down, Excel does it.
>
> --
>
> HTH
>
> Bob Phillips
>
> (replace xxxx in the email address with gmail if mailing direct)
>
> "jeffreyj" > wrote in message
> ...
> > I am trying to make a formula that adds the last part of an IP address,
> such
> > that when I type in one IP address suchas 147.202.70.132, they
> automatically
> > fill in below sequentially with 133, 134, 135, etc. Can anyone help me
> with
> > this? Thanks.
> >
>
>
>

The VBA procedure I posted will do that.


--
Cordially,
Chip Pearson
Microsoft MVP - Excel
Pearson Software Consulting, LLC
www.cpearson.com

"jeffreyj" > wrote in message
...
>I know Excel does this. I need a formula so that it updates
>automatically.
> I want to set a cell equal to an IP address in a different
> worksheet A. And
> when I update the IP address in worksheet A, it updates it in B
> and fills in
> the IP addresses below, automatically
>
> "Bob Phillips" wrote:
>
>> Just drag and copy them down, Excel does it.
>>
>> --
>>
>> HTH
>>
>> Bob Phillips
>>
>> (replace xxxx in the email address with gmail if mailing
>> direct)
>>
>> "jeffreyj" > wrote in
>> message
>> ...
>> > I am trying to make a formula that adds the last part of an
>> > IP address,
>> such
>> > that when I type in one IP address suchas 147.202.70.132,
>> > they
>> automatically
>> > fill in below sequentially with 133, 134, 135, etc. Can
>> > anyone help me
>> with
>> > this? Thanks.
>> >
>>
>>
>>

Thanks Chip. I will use that.

"Chip Pearson" wrote:

> The VBA procedure I posted will do that.
>
>
> --
> Cordially,
> Chip Pearson
> Microsoft MVP - Excel
> Pearson Software Consulting, LLC
> www.cpearson.com
>
> "jeffreyj" > wrote in message
> ...
> >I know Excel does this. I need a formula so that it updates
> >automatically.
> > I want to set a cell equal to an IP address in a different
> > worksheet A. And
> > when I update the IP address in worksheet A, it updates it in B
> > and fills in
> > the IP addresses below, automatically
> >
> > "Bob Phillips" wrote:
> >
> >> Just drag and copy them down, Excel does it.
> >>
> >> --
> >>
> >> HTH
> >>
> >> Bob Phillips
> >>
> >> (replace xxxx in the email address with gmail if mailing
> >> direct)
> >>
> >> "jeffreyj" > wrote in
> >> message
> >> ...
> >> > I am trying to make a formula that adds the last part of an
> >> > IP address,
> >> such
> >> > that when I type in one IP address suchas 147.202.70.132,
> >> > they
> >> automatically
> >> > fill in below sequentially with 133, 134, 135, etc. Can
> >> > anyone help me
> >> with
> >> > this? Thanks.
> >> >
> >>
> >>
> >>
>
>
>

Chip,

Say I wanted to add onto this function, and instead of just giving the next
IP address, I want to check to see if the next IP address is divisible by 4.
If it is divisible by 4 then put it in the cell, if not, put the next
available address that is divisible by 4. How would I do this? thanks.


"Chip Pearson" wrote:

> I'd use a VBA function.
>
> Function NextIPAddress(IP As String) As String
> Dim Arr As Variant
> Arr = Split(IP, ".")
> Arr(UBound(Arr)) = Arr(UBound(Arr)) + 1
> NextIPAddress = Join(Arr, ".")
> End Function
>
> You can then call this from a worksheet cell with code like
> =NextIPAddress(A1)
>
> You be using Excel 2000 or later in order to use the Split and
> Join functions.
>
> --
> Cordially,
> Chip Pearson
> Microsoft MVP - Excel
> Pearson Software Consulting, LLC
> www.cpearson.com
>
>
>
> "jeffreyj" > wrote in message
> ...
> >I am trying to make a formula that adds the last part of an IP
> >address, such
> > that when I type in one IP address suchas 147.202.70.132, they
> > automatically
> > fill in below sequentially with 133, 134, 135, etc. Can
> > anyone help me with
> > this? Thanks.
> >
>
>
>