Lookup
DNS resolver
Custom DNS IP(s)

Result

heise.de

Domain resolved via cloudflare

Ready
Inputheise.de
TypeDomain
Resolved to193.99.144.80
DNS Resolver1.1.1.1 / Cloudflare
ASN12306
Prefix193.99.144.0/24

Range

193.99.144.0/24

Source: RIPE NCC

Prefix193.99.144.0/24
ASNs12306

If multiple ASNs are returned, the first one is used for PeeringDB.