IP Subnetting

Issue: IP routing to Salesforce Starting point IP ( salesforce server)
Solution:

Step 1. Go to Windows cmd prompt.
Step 2. >
Step 3. use tracert command to find the  origin  IP of salesforce.com
Step 4. >tracert salesforce.com

Output:
Tracing route to salesforce.com [204.14.234.33]
over a maximum of 30 hops:

  1    33 ms     1 ms     1 ms  192.168.1.1
  2    27 ms    25 ms    25 ms  ABTS-KK-Static-001.228.178.122.airtelbroadband.in [122.178.228.1]
  3    26 ms    25 ms    25 ms  ABTS-KK-Static-221.32.166.122.airtelbroadband.in [122.166.32.221]
  4    26 ms    25 ms    25 ms  AES-Static-025.102.22.125.airtel.in [125.22.102.25]
  5   409 ms   306 ms   306 ms  AES-Static-122.36.144.59.airtel.in [59.144.36.122]
  6   428 ms   306 ms   306 ms  xe-5-1-0.edge1.LosAngeles6.Level3.net [4.26.0.89]
  7   259 ms   390 ms   306 ms  vlan90.csw4.LosAngeles1.Level3.net [4.69.144.254]
  8   533 ms   306 ms   306 ms  ae-93-93.ebr3.LosAngeles1.Level3.net [4.69.137.45]
  9   528 ms   306 ms   306 ms  ae-3-3.ebr1.SanJose1.Level3.net [4.69.132.9]
 10   533 ms   307 ms   246 ms  ae-61-61.csw1.SanJose1.Level3.net [4.69.153.2]
 11   472 ms   306 ms   306 ms  ae-14-60.car4.SanJose1.Level3.net [4.69.152.6]
 12   533 ms   306 ms   306 ms  SALESFORCE.car4.SanJose1.Level3.net [4.71.114.38]
 13   533 ms   307 ms   306 ms  204.14.234.187
 14   353 ms   307 ms   306 ms  salesforce.com [204.14.234.33]

Trace complete.

Step 5.How to understand  an  IP address convention:
sample IP Address:  204.14.234.187
WWW naming convention : F.Q.D.N  ->  Fully.Qualified.Domain.Name
Mapping FQDN to routers and IP address -> Networks.HostNames -> Networks.x.Subnets.IPAddresses 
Mapping to Schneider Office Network domain 1 ->  10.217 . 20.65 ->  Networks . x .  20  .  ( 1- 254 )
Mapping to Schneider Office Network domain 2 ->  10.217 . 20.65 ->  Networks . x .  21  .  ( 1 - 254 )
Mapping Sales Force Networks ->  Networks . x .  21  .  ( 1 - 254 ) ->  (Continents) . x . 20/21 . ( 1 - 254)
 Sales Force.com total number of Networs -> AP, EU , NA, EMEA.
 Mapping to EU0 . x . salesforce . com 
 That is your browser www address.
 Mapping to www address -> EU0 . salesforce . com 
 Let's try this IP address in google.com  , the source of information.
 Step 6. Let's try finding this .net IPAddress.
 ae-2.r20.sngpsi02.sg.bb.gin.ntt.net [129.250.4.142]

Step 7.This is  (Logical or Physical) IP Naming Convention.