AS12251 205.145.40.0/21 CIDR and IP Range Summary.ASN: 12251 - Ricoh USA Inc.Host Count: 2046Addressable IPs: 2048205.145.40.0/24205.145.41.0/24205.145.42.0/24205.145.43.0/24205.145.44.0/24205.145.45.0/24205.145.46.0/24205.145.47.0/24