AS3527 156.40.200.0/21 CIDR and IP Range Summary.ASN: 3527 - National Institutes of HealthHost Count: 2046Addressable IPs: 2048156.40.200.0/24156.40.201.0/24156.40.202.0/24156.40.203.0/24156.40.204.0/24156.40.205.0/24156.40.206.0/24156.40.207.0/24