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Knowledge document #1089
FRITZ!Box 5590 Fiber
This support document is available for the following products:
- FRITZ!Box 7690
- FRITZ!Box 7590 AX
- FRITZ!Box 7590
- FRITZ!Box 7583 VDSL
- FRITZ!Box 7583
- FRITZ!Box 7582
- FRITZ!Box 7581
- FRITZ!Box 7560
- FRITZ!Box 7530 AX
- FRITZ!Box 7530
- FRITZ!Box 7520
- FRITZ!Box 7510
- FRITZ!Box 7490
- FRITZ!Box 7430
- FRITZ!Box 7390
- FRITZ!Box 7360
- FRITZ!Box 6890 LTE
- FRITZ!Box 6850 5G
- FRITZ!Box 6850 LTE
Identifying the address range of the IPv4 address for the internet connection
In order for computers, smartphones, and other network devices to communicate with each other, each device must be addressable via a unique IP address. When the FRITZ!Box connects to the internet, the internet service provider assigns it an IP address for internet communication.
If Internet Protocol version 4 (IPv4) is used, each IP address can be associated with one of the following address ranges:
- Private address ranges:
- IP addresses from private address ranges are intended exclusively for communication in private networks (for example the FRITZ!Box home network) and can therefore be used in an unlimited number of networks at the same time. Since they are never forwarded (routed) over the internet, devices with IP addresses from private IP address ranges cannot be accessed from the internet.
Note:For more information on "private addresses", see Wikipedia.
- IP addresses from private address ranges are intended exclusively for communication in private networks (for example the FRITZ!Box home network) and can therefore be used in an unlimited number of networks at the same time. Since they are never forwarded (routed) over the internet, devices with IP addresses from private IP address ranges cannot be accessed from the internet.
- Public address ranges:
- IP addresses from public address ranges are only used by a single device at a time worldwide. Since they make it possible to unequivocally identify network devices, they are forwarded on the internet (routed) and therefore allow the network devices to be accessed from the internet.
Identifying the address range of an IP address
- Click "Internet" in the FRITZ!Box user interface.
- Click "Online Monitor" in the "Internet" menu.
- Check which IP address is displayed in the line "Internet, IPv4".
- If an IP address from one of the following ranges is displayed, the FRITZ!Box is using an IP address from the private address range and cannot be reached via IPv4 in the internet.
- 10.0.0.0 - 10.255.255.255
- 100.64.0.0 - 100.127.255.255 (carrier-grade NAT)
- 172.16.0.0 - 172.31.255.255
- 192.0.0.0 - 192.0.0.7 (DS Lite tunnel, Dual-Stack Lite)
- 192.168.0.0 - 192.168.255.255
- If an IP address from a different range is displayed, the FRITZ!Box has an IP address from the public address range and can be reached via IPv4 in the internet.
- If no IP address is displayed, the FRITZ!Box cannot be reached in the internet via IPv4.