Why does OR(AND()) fail @ 96 and again @ 100?

[ToxinUK1]

My sheet is supposed to translate network patch ports to network switch ports (TRUE = top row, FALSE = bottom row) but seems to fail after port 96 and then again at port 100.
The formula that I used is; =OR(AND(MID(B2,6,3)>"0",MID(B2,6,3)<"25"),AND(MID(B2,6,3)>"48",MID(B2,6,3)<"73"),AND(MID(B2,6,3)>"96",MID(B2,6,3)<"121"),AND(MID(B2,6,3)>"144",MID(B2,6,3)<"169"),AND(MID(B2,6,3)>"192",MID(B2,6,3)<"217")).
The data is arranged as 00/A/01 - 00/A/240.
It all works fine until it gets to 97 which should be TRUE but reports FALSE and then at 100 it reverts to TRUE and stays TRUE for the rest of the numbers.

Any help or alternatives would be appreciated.

 

[RoryA]

You are doing text comparisons, not number ones. Text comparisons go character by character, so "2" would be > "197" because "2" is greater than "1" (it would never check the 9 or 7). Given that you have 365, I'd suggest using something like:

=LET(pnum,TEXTAFTER(B2,"/",-1)+0,OR(AND(pnum>0,pnum<25),AND(pnum>48,pnum<73),AND(pnum>96,pnum<121),AND(pnum>144,pnum<169),AND(pnum>192,pnum<217)))

You might also use a lookup table.

 

[Phuoc]

One way:

=LET(a,REPLACE(B2,1,5,"")+0,SUM((a>{0,48,96,144,192})*(a<{25,73,121,169,217}))>0)

 

[ToxinUK1]

Thanks for the explanation and both for the "better" way to calculate it. I'd completely missed the text versus number mismatch.