Split IPs to 8 and 16, C#

Split IPs to 8 and 16

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
 string ips = 
@"0227000694-sherka:41.131.29.160:29
025104964:41.196.111.224:29
0224576662-Elshreka:41.131.50.72:29
0224571537-Joseph:197.162.150.112:29
0224573235-Sherkaa:41.196.111.96:29
0233133330-tarek:41.131.16.24:29
0223655888-Mohamed:41.178.191.96:29
0222021138-abdel:41.178.73.72:29
023640111-ramzia:41.196.138.144:29
025124125-mohamed:197.167.67.48:29
0227001568-Khaled:197.161.202.160:28
0225104963-Co:41.131.29.104:29
0222037695-anwar:41.178.73.200:29
0846330501-dlz:197.161.202.216:29
0225329099-Elsherka:196.205.212.184:29
0223654403-Company:41.178.180.224:29
0224607934-ahmed:196.205.157.160:29
023645614-amr:197.160.40.248:29
0223652728-Ahmed:197.161.151.72:29
0223619120-salah:41.178.166.240:29
0224620761-emaad:197.162.150.24:29
0224607902-nashaat:41.131.49.120:29
0223648046-edara:196.205.217.176:29
0222050023-samy:41.178.84.32:28
0224593846-MSAN:197.161.202.48:29
0222032881-abd:41.196.183.200:29
0223630880-Sherkaa:197.167.66.0:29
0223684381-edara:196.205.172.32:29
0225314140-elsherka:197.161.38.112:28
0223130301-fadl:41.131.28.232:29
0224319223-alsayed:197.162.151.0:29
0224303218-company:41.196.126.96:29
0224572084-mahrosa:82.201.176.192:29
0224593995-Makhazen:41.131.48.56:29
023648473-dalydress:41.196.204.208:29
0223644529-sherka-lz:197.166.194.56:29
0224573066-Rizkallah:197.162.149.248:29
0226183133-atef:196.205.137.0:29
0225121054-mohafzt:41.131.28.216:29
0225126787-waleed:196.205.168.152:29
0225325571-Mohamed:197.167.67.8:29
0223619045-hospital:41.196.198.128:29";
            
            var ipsArray = ips.Split(new string[]{Environment.NewLine}, StringSplitOptions.RemoveEmptyEntries);
            foreach (string ipLine in ipsArray)
            {
                var lineContent = ipLine.Split(':');
                int subnet = 0;
                if (lineContent[2] == "28")
                    subnet = 16;
                else subnet = 8;
                for (int i = 0; i < subnet; i++)
                {
                    int lastOctet = int.Parse(lineContent[1].Split('.')[3]);
                    Console.WriteLine(lineContent[0] + "	" + lineContent[1].Split('.')[0] + '.' + lineContent[1].Split('.')[1] + '.' + lineContent[1].Split('.')[2] + '.' + (lastOctet + i)+"	"+DateTime.Now.ToString("yyyy-MM-dd"));
                }
            }
                    
        }
    }
}


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