AS21547 64.140.192.0/20 CIDR and IP Range Summary.ASN: 21547 - First Light FiberHost Count: 4094Addressable IPs: 409664.140.192.0/2464.140.193.0/2464.140.194.0/2464.140.195.0/2464.140.196.0/2464.140.197.0/2464.140.198.0/2464.140.199.0/2464.140.200.0/2464.140.201.0/2464.140.202.0/2464.140.203.0/2464.140.204.0/2464.140.205.0/2464.140.206.0/2464.140.207.0/24