Network address
2001:1900:21ff::
Full
2001:1900:21ff:0000:0000:0000:0000:0000
Prefix length
49
Range
2001:1900:21ff:: - 2001:1900:21ff:7fff:ffff:ffff:ffff:ffff
Number of hosts
604,462,909,807,314,587,353,088
Parent subnet
2001:1900:21ff::/48🔍
Previous subnet
2001:1900:21fe:8000::/49🔍
Next subnet
2001:1900:21ff:8000::/49🔍