Why Every Router has the same default ip address?

Question

C:\Users\minatoots1>ping 192.168.1.1

Pinging 192.168.1.1 with 32 bytes of data:
Reply from 192.168.1.1: bytes=32 time=1ms TTL=64
Reply from 192.168.1.1: bytes=32 time=4ms TTL=64
Reply from 192.168.1.1: bytes=32 time=1ms TTL=64
Reply from 192.168.1.1: bytes=32 time=2ms TTL=64

Ping statistics for 192.168.1.1:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 1ms, Maximum = 4ms, Average = 2ms

George Tian · Answer 1 · 2017-07-20T11:56:19.120

There is a range of IP addresses that are reserved for private networks (192.168.0.0 - 192.168.255.255). The default IP address of a router is usually the first address within that range, which is 192.168.1.1.

However, note that there are also reserved IP addresses from 10.0.0.0 – 10.255.255.255 and 172.16.0.0 – 172.31.255.255, so contrary to your question, not every router has the same IP address

Answer to a similar question can be found in the Network Engineering SE: Why 192.168.1.1 is most common default gateway for routers? [closed]

Why Every Router has the same default ip address?

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