AS680 153.97.40.0/21 CIDR and IP Range Summary.ASN: 680 - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.Host Count: 2046Addressable IPs: 2048153.97.40.0/24153.97.41.0/24153.97.42.0/24153.97.43.0/24153.97.44.0/24153.97.45.0/24153.97.46.0/24153.97.47.0/24