18. How to Find the Subnet Number of an IP Address

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  • Опубликовано: 18 ноя 2024

Комментарии • 223

  • @devangsangani7580
    @devangsangani7580 4 года назад +109

    Class A subnet mask is 255.0.0.0(0-127)
    Class B subnet mast is 255.255.0.0(128-191)
    Class C subnet mask is 255.255.255.0(192-223)

    • @peeledxorange2635
      @peeledxorange2635 3 года назад +10

      m confused with his IP add example starting from172 which falls under class b? but why he showed the class c sub net mask?

    • @saradev9445
      @saradev9445 3 года назад +2

      @@peeledxorange2635 me too :(

    • @mok6375
      @mok6375 3 года назад +1

      @@peeledxorange2635 3:07 For class B default subnet is 255.255.0.0. However, that example given he did explained it's not an default submet mask

    • @carreviewswithhashir
      @carreviewswithhashir 3 года назад

      @@peeledxorange2635 same here, class B 255.255.0.0

    • @Alianger
      @Alianger 2 года назад

      What do you mean by the numbers in parenthesis here?

  • @keyntankeye
    @keyntankeye 3 года назад +35

    Don’t usually comment but have to show my gratitude. So many tutorials have their own method but this way really helps me solve so many different scenarios consistently without getting stuck. Thanks again.

  • @colin_cant_lose
    @colin_cant_lose Год назад +5

    I really appreciate you putting things so simply put. These videos taught me more in 20 mins than an hour of reading yesterday!! 😂

  • @MSSPDailyDose
    @MSSPDailyDose 2 года назад +4

    Dude i've been trying this shit for about 5 hours today and it never clicked, your method of teaching is dope just wanted to express my gratitude. Keep doing whatever you do because you're obviously doing something right in life. Thanks again.

  • @Ms.Robot.
    @Ms.Robot. 3 года назад +16

    ❤WOW❤ That was great! You explained that better than all of my tech professors at the university.

  • @Jumanji888
    @Jumanji888 Год назад +1

    Now that I actually understand !!! I have watched so many vids on subnetting and it feels like rocket science but you have explained it far more clearly, thank you!!

  • @davecarattini1915
    @davecarattini1915 Год назад

    I love you. After 4 and half hours of searching, you solved my problem. My contribution was to make the connection between your 'subnet number' and 'Cascaded Network Address' (which my router software was asking for). Thank you, Thank you, Thank you!

  • @CarlieMartece
    @CarlieMartece Год назад +1

    Thanks! You explained this better than my university teaching materials, where it just sounded like they were making up numbers.

  • @migueljackson1340
    @migueljackson1340 6 лет назад +5

    I never feel so comfortable with this explanation; you're rock Thanks

  • @27cyna
    @27cyna Год назад +1

    You are my hero!!!!!! Thank you for making this so easy to follow! Love, a formerly frustrated 🥴 IT student

  • @Red_rshd
    @Red_rshd 4 года назад +1

    one of the best understandable videos out there.. i am literally watching this during my final semester exams and it totally helped me!!!!!!!!!

  • @dcr630
    @dcr630 3 года назад

    I just wanted to leave a comment because I’ve watched lots of videos and this by far explained subnetting better than anything I’ve seen. Thank you

  • @ES-ix1rn
    @ES-ix1rn 4 года назад +3

    On another example of clear vision, logical reasoning and a great way to explain subneting. Like and subscribe.

  • @josietron6969
    @josietron6969 9 месяцев назад

    10 minutes and now im so much more confident thanks

  • @sahejbhatia7331
    @sahejbhatia7331 4 года назад +6

    in the second example 172 is a class b address, so subnet will be 255.255.0.0

    • @Boogieman7743
      @Boogieman7743 Месяц назад

      true, that is default but in this case it was subneted, with aditional 8 bit on the third octet. the default is /16 but in this case was subneted to a /24

  • @elysian-prince
    @elysian-prince 2 года назад +2

    Simple, straightforward. Makes a lot of sense, thank you!

  • @majorskies7091
    @majorskies7091 3 года назад +5

    wow every teacher should be like this!

  • @shivamgupta-ri3fy
    @shivamgupta-ri3fy 6 лет назад +6

    just made my day with that formula. Thank you so much

  • @strawberryicecream04
    @strawberryicecream04 4 года назад

    Thank you very much, this has truly helped me with my exams!

  • @tenesiadontneedja
    @tenesiadontneedja 4 года назад +1

    😭😭 Thank youuuu the book was not teaching me this easily

  • @coffeebearboi
    @coffeebearboi 3 года назад

    Oh my gosh!! Thank you so much!! I was thinking it would be so hard to solve, as my book made it complicated to figure it out but this video help out so much!
    You're a lifesaver!

  • @peraruor
    @peraruor 3 года назад

    Awesome explanation! Thanx, you make this so easy for me know.

  • @clarkyno1311
    @clarkyno1311 3 года назад +1

    Brilliant teacher

  • @Mclubens
    @Mclubens 2 года назад

    These subnet videos are gold. Can you make an updated version for subnetting?

  • @train4905
    @train4905 3 года назад

    Superb sir.thankyou.steve from the uk

  • @billionairepodcast
    @billionairepodcast 6 лет назад +3

    whats exactlysubnet number ? i have tried to googling and couldnt find any answer.

  • @kayedghananim9273
    @kayedghananim9273 3 года назад +2

    Hi. I just wanted to know where 256 comes from?

  • @sabwepatrick7865
    @sabwepatrick7865 2 года назад +1

    If I may ask, where does the 256 to subtract from comes from. I mean why do you use 256 to subtract and not any number above it, thank you sir

  • @shivkumarsahoo946
    @shivkumarsahoo946 8 месяцев назад

    Very nicely explained

  • @rasmiranjanray5866
    @rasmiranjanray5866 4 года назад +1

    In the 3rd example if my ip address is 193.168.20.10, then what could be subnet number?

  • @JamesBassett-j9v
    @JamesBassett-j9v Год назад

    excellent explanation thank you

  • @heistman141
    @heistman141 4 года назад +23

    How can be the class be subnet mask 255.255.255.0 and it is actually 255.255.0.0 in second question

    • @rosedhessi340
      @rosedhessi340 4 года назад +1

      Yes same confused me too

    • @grizzly2cracked
      @grizzly2cracked 4 года назад

      wa

    • @MyersEmpires
      @MyersEmpires 4 года назад +3

      As a class b net ID it would default to 255.255.0.0 but if you don't need 65,534 IP address then the net admin is able to shorten the scope by setting a smaller subnet mask. But again if youre using a class b subnet you probably need 65,534 ip addresses.

    • @kunaii_cs
      @kunaii_cs 4 года назад +1

      255.255.0.0 is the default mask but if you subnet it given a different CIDR notation it might be different.

    • @tomross8820
      @tomross8820 4 года назад

      why is it 256?

  • @MustaphaBiney
    @MustaphaBiney 10 месяцев назад

    I love the you teaching ❤

  • @magombedzeelizabeth7411
    @magombedzeelizabeth7411 Год назад

    I’m glad I came across this tutorial now.. thank you but why do we have to use the number 256 ?

  • @Ozaimusic
    @Ozaimusic Год назад

    Saved my life. Thank you

  • @megajoe811
    @megajoe811 Год назад

    you are a legend fyi , thanks for the series

  • @roshnibhatia8171
    @roshnibhatia8171 7 месяцев назад

    OMG ..so good explanation

  • @GermanShepherdDaphne
    @GermanShepherdDaphne 3 года назад

    What about this IP?? I have a e-commerce website and have SPAMMERS clicking my ads using this IP range. I CANNOT block these types of IPS. How do I find the original IP?2600:1702:2f30:97b0:e838:1f6f:8bbd:db46

  • @Johs4490
    @Johs4490 3 года назад

    Thank you, what an easy way , very good explained , but what with a pubic IP address you never get to know the subnet mask.or the class from the ISP , you probably do not need it as a home user, but i'm currious.

  • @erfanafshan
    @erfanafshan 6 лет назад +15

    kiss on your hands thank you thank you thank you thank you thank you thank you thank you thank you thank you

  • @DarkLifeMatters
    @DarkLifeMatters 4 месяца назад

    So does "Classless" practically mean we are reducing the number of hosts because we dont need all of the availability?

  • @MichaelWright-n1d
    @MichaelWright-n1d Год назад

    Do you still use formula for number if value is 254?

  • @JUDITHMWESIGA
    @JUDITHMWESIGA 10 месяцев назад

    Whats the difference between with subnetting and without subnetting?

  • @hatemdaiche4847
    @hatemdaiche4847 7 лет назад +2

    very well explained thanks

  • @Alianger
    @Alianger 2 года назад

    Can I calculate the subnet mask without the cidr notation, only the ip address?

  • @kashishsheth5310
    @kashishsheth5310 6 лет назад +4

    Nicely explained! Cheers mate!

  • @kevhandle000
    @kevhandle000 3 года назад

    You made it easy.Thank you Sir.

  • @joyariffic4217
    @joyariffic4217 3 года назад +1

    Where did you get the 256 from?

  • @ScreenplayReview
    @ScreenplayReview 5 лет назад +2

    what will happen if the one octate in ip is 16 and corespoding subnet is 192 then 256-192 =64 but ip is already 16 then what write .. ithink 0 is the answer...

    • @mandownXtownmade
      @mandownXtownmade 4 года назад

      Is it? Because I was wondering about the same thing when the octet Is a 2.. u get 64 , but do I put 64 or 0?????

  • @derpyderplord4833
    @derpyderplord4833 3 года назад

    Wait so if I have 3 digits for the first 3 for the second adn the last 2 spaces are also 2 digits then do I use the same subnet mask?

  • @Wigalicious
    @Wigalicious 2 года назад

    Sir I could kiss you right now. Your methodology is incredible.

  • @Zerlot
    @Zerlot 2 года назад +1

    Very good tutorial... my only question: Where does the number 256 when you subtract from it with the last octet in a subnet mask come from??

    • @27cyna
      @27cyna Год назад +1

      256 is the highest number you can get in a bit (0-255)

  • @PrashantSingh-yc6su
    @PrashantSingh-yc6su 2 года назад

    Thanx, explained very easy

  • @randomgirl1656
    @randomgirl1656 4 года назад

    What if the 4rth octect of ip address is less then from the minus value comes out... Like after _ you got 16 and the 4rth octect of ip address contain 14 then what to do how to sum up? 16 we cannot exceed you told... Please tell

  • @luwkrabbit
    @luwkrabbit 4 года назад

    In the beginning AND operation where it says "no subnetting," what is happening here if this isn't subnetting? Is that just a conversion of an IP into a subnet number?

  • @kennedyalexander1541
    @kennedyalexander1541 6 лет назад +1

    What is the subnet number for 10.0.0.0, 255.255.240.0. When there's an interesting number in between

    • @VLearnIT
      @VLearnIT 4 года назад

      The answer is 10.0.16.0

    • @rickyray2794
      @rickyray2794 4 года назад

      @@VLearnIT so if the IP has a 0 and the subnet mask has anything other than a 0 or 255 you just minus by 256 and that is your answer? (in this case 16)

    • @VLearnIT
      @VLearnIT 4 года назад

      @@rickyray2794 Yes that is correct! You can make a chart as well to make the conversations even quicker if you're taking exams, if not you can do it in your head like you just suggested and that works perfectly fine.

    • @rickyray2794
      @rickyray2794 4 года назад

      VLearn I.T. I have to take my A+ core 2 (I’ve been putting it off, nervous about studying. I passed my core 1 a few months ago). But after that yeah I’ll be taking my net + so I would definitely prefer being able to do most of it in my head. I’ll be working a bit with it this semester for my sys admin class as well.

    • @VLearnIT
      @VLearnIT 4 года назад +1

      @@rickyray2794 Good plan, good luck.

  • @passan348
    @passan348 3 года назад

    I had a question let say I have
    10.10.166.12
    10.10.164.46
    _____________
    ?
    what would I have to do now?

  • @DrTariqulIslam2535
    @DrTariqulIslam2535 6 месяцев назад

    for class B- default subnet mask will be- 255.255.0.0

  • @Magician12345
    @Magician12345 Год назад

    how are you able to imediately know what class a IP is?

  • @Justificable401
    @Justificable401 5 лет назад +2

    Why 256 tho ?

  • @juniorbuking860
    @juniorbuking860 5 лет назад +2

    THANK YOU! Very easy to understand :))

  • @ClaytonBugeja
    @ClaytonBugeja Год назад

    very incredible but the problem is that they never gave you the subnet mask, so you end up using the end operation.

  • @melontrophy7483
    @melontrophy7483 3 года назад

    Is subnet number the same with network address?

  • @Saikoub119
    @Saikoub119 3 года назад

    Thankz a lot this video jus saved me....🤟

  • @10ysf
    @10ysf Год назад

    Is the subnet mask correct here at 2:57 ?

  • @chaithu_varma
    @chaithu_varma 3 месяца назад

    Simply if we do bitwise and with each octet we will get the subnet number

  • @sirlico
    @sirlico 4 года назад

    is this subnet number same as network id

  • @Joshv918
    @Joshv918 6 лет назад

    how would you find the broadcast easily in a subnet like /18 where you have so many available host..?

    • @malluk4127
      @malluk4127 4 года назад

      The first one is network & the last is broadcast.

  • @stevevill303
    @stevevill303 4 года назад

    Where did u pull the number 256 from in the 3rd example??

    • @marul86
      @marul86 3 года назад

      In the CCNA study guide book by wendel odom called the number "the magic number"

  • @vaforaysheriff5425
    @vaforaysheriff5425 6 лет назад +1

    This is fantastic job!!!

  • @soa4964
    @soa4964 Год назад

    so thankful for you ❤❤

  • @MasoodOfficial
    @MasoodOfficial 4 года назад +1

    Ok, this is life saving!

  • @anuradhagupta10
    @anuradhagupta10 3 года назад

    Never ever take this video down

  • @dashrathprasad3252
    @dashrathprasad3252 3 года назад

    Now it,s 2021 so came back to RUclips please

  • @TheKpow
    @TheKpow Год назад

    Currently doing the Google cert about this and the way they explain it makes no sense. Thanks for this

  • @derpyderplord4833
    @derpyderplord4833 3 года назад

    How did u get 256?

  • @חדוהכהן-נ7נ
    @חדוהכהן-נ7נ 2 года назад

    such a good video, thank you so much youre aweseme!!!!

  • @mightykc4636
    @mightykc4636 4 года назад

    may i ask on your 3rd example? where did you get that 256 that u subtracted to 240?

    • @edturner9670
      @edturner9670 4 года назад

      In an octet the max value is 255 if every bit is a 1. However, that is not the max number of combinations. It is actually 256 if you include the value of 0... or eight zero bits in the octet.

  • @dimpalkurmalkar6130
    @dimpalkurmalkar6130 4 года назад +1

    okay, so he performed '&' (and ) operation between IP address and subnet mask.
    .
    .
    .

  • @catalincoconeanu4929
    @catalincoconeanu4929 6 лет назад

    Dont know what to say, using an IP calculator for the 3rd example with the IP: 192.168.20.73, is getting the result 192.168.20.0/24 or just 192.168.20.0 . I tried with two different IP calculators, same results. However it is an interesting way to calculate.

    • @lordjunk5847
      @lordjunk5847 6 лет назад +1

      Catalin Coconeanu wouldn’t the third example be /28 not /24 cause it’s 255.255.255.240?

  • @kennedyalexander1541
    @kennedyalexander1541 6 лет назад

    Also, is subnet number network number?

  • @rhul0017
    @rhul0017 4 года назад +1

    why 256?

  • @boholanongblogger8339
    @boholanongblogger8339 3 года назад

    Where to find the octet number

  • @careditor
    @careditor 3 года назад

    Take a bow sir...

  • @YashBhardwaj1
    @YashBhardwaj1 5 лет назад +1

    What happen when we have,
    Class c network
    Of 192.168.0.0 /25
    How to solve this ?

    • @rickyray2794
      @rickyray2794 5 лет назад

      Yeah i am wondering this myself.

    • @gerryvalenzuela9158
      @gerryvalenzuela9158 5 лет назад

      that network number is 192.168.0.0 but you have a /25 that’s means that your networks goes 192.168.0.0 to 192.168.0.128 so the fit network broadcast is 192.168.0.127

    • @DaveBenchmarks
      @DaveBenchmarks 4 года назад

      @@gerryvalenzuela9158 Hey, Garry, do you think you can solve this? I'll gladly appreciate it!
      You have IP address 10.10.11.11 and netmask 255.128.0.0 (10.10.11.11/9). In which subnet is this address?

  • @boyarsan3101
    @boyarsan3101 4 года назад

    can someone answer If the receiving address is 200.45.33.54 and the subnet mask is 255.255.250.0, what is the subnet address ?

  • @valentino6942
    @valentino6942 5 лет назад +1

    You’ve made my day

  • @Fuzail_Ahammed
    @Fuzail_Ahammed 2 года назад

    Well Explained

  • @nguyenquoctrungo9759
    @nguyenquoctrungo9759 5 лет назад +43

    Thank you for not speaking Indian, so hard to find Computer Tutorial in English nowadays

    • @worlaliawakame762
      @worlaliawakame762 Год назад +1

      I mmmeeeaaaannnn

    • @abhaybiswas8480
      @abhaybiswas8480 Год назад

      😂😂😂 this is India 🇮🇳 bro

    • @PheeBaby.x
      @PheeBaby.x Год назад +4

      Rude

    • @joyjit_roy
      @joyjit_roy Год назад +1

      @9759, *What is the exact problem if someone speaks Indian can you tell us ?*

    • @PheeBaby.x
      @PheeBaby.x Год назад

      @@joyjit_roy right! it’s such a rude comment smh

  • @kennedyalexander1541
    @kennedyalexander1541 6 лет назад

    Just got it, it's zero? So, it's 10.0.64.0???

  • @andreasvasd8802
    @andreasvasd8802 5 лет назад

    What about ipv6 addresses?

  • @avazara408
    @avazara408 5 лет назад +1

    Perfect sir
    Cheers

  • @TheseWordsTouch
    @TheseWordsTouch Год назад

    Thank you thank you thank you!!!

  • @jackli738
    @jackli738 2 года назад

    I'm confused where the 240 came from

    • @anthonyobryan3485
      @anthonyobryan3485 2 года назад

      Jack, 240 was an arbitrary number chosen for an example.

  • @moamnhmdany
    @moamnhmdany 6 лет назад +4

    Vishwanath Biswal
    قبل 8 أشهر
    Default subnet mask for class B is 255.255.0.0 not the 255.255.255.0 .
    So 2nd number example's solution is wrong .

    • @tyronesaxon6276
      @tyronesaxon6276 5 лет назад +5

      He states for example 2 that he is using a subnetted address and says that it is NOT the default subnet mask for Class B.

    • @tushardhruve7731
      @tushardhruve7731 5 лет назад

      You are fool

  • @DJLiftOFF
    @DJLiftOFF Месяц назад

    THANK YOU!!!!

  • @SudhaPriyadarsini
    @SudhaPriyadarsini 11 месяцев назад

    Thank you so much ...

  • @pavithra8500
    @pavithra8500 4 года назад

    For third example 193.168.20.73 how u have taken the last subnet mask number as 240 can u explain

    • @aj4991
      @aj4991 4 года назад +1

      /28 network but he is using this to just teach the math of finding the subnet address so he way not have said that.

  • @TRE4RAISEDME
    @TRE4RAISEDME 6 месяцев назад

    3:08. That subnet mask is incorrect. That is a class c subnet mask

  • @unknowngamer610
    @unknowngamer610 4 месяца назад

    Thank you 🙏