AS13880 216.230.48.0/20 CIDR and IP Range Summary.ASN: 13880 - American Century Services LLCHost Count: 4094Addressable IPs: 4096216.230.48.0/24216.230.49.0/24216.230.50.0/24216.230.51.0/24216.230.52.0/24216.230.53.0/24216.230.54.0/24216.230.55.0/24216.230.56.0/24216.230.57.0/24216.230.58.0/24216.230.59.0/24216.230.60.0/24216.230.61.0/24216.230.62.0/24216.230.63.0/24