1. Registration Code Nfs Undercover
  2. Registration Code List
  3. Ping Registration Numbers
Learning has never been so easy!

Ever wonder what the symbols mean on some failed ping commands? That's what this how-to will show you. If you've only received !!!! from ping commands, you are one lucky duck. I'll be explaining the other possibilities. These are the outputs on a Cisco Router some may not apply to workstations or other devices.

4 Steps total

Oct 03, 2013 The other approach, test as an IP interface, is also known as 'test as a data T1.' This approach lets you conduct ICMP ping tests, which seems better because you can verify that the VWIC (card and port) is good all the way up to Layer 3. Note, however, that the Layer 3 is Open System Interconnection (OSI) Layer 3, not ISDN Layer 3. The ping command sends packets of data to a specific IP address on a network, and then lets you know how long it took to transmit that data and get a response. It’s a handy tool that you can use to quickly test various points of your network.

Step 1: Successful Ping

A successful ping is of course what we want to see, that way we can say we'll its online and I can ping it. Then blame someone else and have them fix it right? In most cases not..lol

The icon that symbolizes a successful ping is the exclamation mark !!!!! typically seen 5 times in a row for complete success. It also indicates that the ICMP echo reply was received.

Step 2: Infamous Time Out

Most IT pros will recognize this as a bad thing, because it means the device is not responding and could be down or offline.

Time outs are displayed as periods. ..... One for every time out again typically 5 are shown.

Step 3: Unreachable Destination

Another failed ping command output, that means the destination was not reachable. In some cases it identifies that an ARP request was sent in search for the MAC address of the destination, and was not found. Meaning the ICMP request ( first ping attempt ) was not even sent.

This is show as a U in the command output.


Step 4: Less common

ICMP unreachable networksubnet, ICMP can't fragment, and unknown packet received are less common responses that I'll quickly cover. All three are self explanatory so I wont go into much detail.

ICMP unreachable networksubnet ( N )
ICMP can't fragment ( M )
Unknown packet ( ? )

For those who don't know fragmentation is the process of breaking down packets into smaller pieces to be sent over WAN or LAN links. Routers must be able to do this or else they will drop or refuse to forward the frame.


  • CCNA Notebook

Registration Code Nfs Undercover


  • Mace
    hsc5775 Aug 18, 2013 at 06:36pm

    i think its also for this tool you should add some ping-tools like “Total Network Monitor”

  • Ghost Chili
    Nick42 Aug 19, 2013 at 12:24am

    Just add some screenshots of the same responses via Windows and/or Linux, perhaps mention a couple command line options (like 'ping -t' on Windows) and you've got a multi-platform hotwo. :)

  • Thai Pepper
    GUIn00b Aug 20, 2013 at 09:25pm

    Ping. Timeless.

    [three four five six seven eight nine ten]

  • Serrano
    fcman Oct 18, 2016 at 06:56pm

    ping - the Swiss army knife for network troubleshooting.

    ping ping

  • Datil
    KrasimirPetrov_ Oct 31, 2018 at 02:37am

    Good read. Thank you very much for sharing.
    Excellent tutorial

Here you can find all secret codes for NOKIA 6.1 Plus. Check out how to enter hidden mode and use advanced options of Android 8.1 Oreo. Let's get access to secret information about NOKIA 6.1 Plus. Click here and find out more information about secret codes.

1. Phone information

2. IMEI Info

3. Calendar

Registration Code List

4. FCM Diagnostics

5. Service Mode

1. By typing '*#*#4636#*#*' you will be redirected to phone information menu. From that mode you can check Usage Statistics, Wi-Fi information and information about your NOKIA 6.1 Plus.

1.1 Phone Information - Here you can check your IMEI number, Signal strenght, cellinfo and connection type. Also you can run Ping test too.

1.2 Usage statistics - This one shows last time using App and usage time of it.

1.3 WiFi Information:

- Wi-Fi API - Here you can disable current WiFi network, disconnect connection, get information about connection and other stuff.
- Wi-Fi Configuration - On this page you can check information about connected network
- Wi-Fi Status - Read about connected network and run Ping test

2. Type in '*#06#' to see you IMEI number. IMEI is a International Mobile Equipment Identity number which you can use to identify your device. By using this code you can find specification of your device. Just go to https://www.imei.infoenter your number and check it.


3. Open phone dialer and enter *#*#225#*#*to see the Calendar. Here you will see all your events like birthday, anniversary, etc. .

Ping Registration Numbers

4. FCM Diagnostics *#*#426#*#*

5. To enable Service Mode you need to type in *#*#372733#*#*. In this menu you can how works modules in your phone like Camera,Speaker and more and more.



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