AS3527 156.40.104.0/21 CIDR and IP Range Summary.ASN: 3527 - National Institutes of HealthHost Count: 2046Addressable IPs: 2048156.40.104.0/24156.40.105.0/24156.40.106.0/24156.40.107.0/24156.40.108.0/24156.40.109.0/24156.40.110.0/24156.40.111.0/24