AS4778 Optus Customer Network

BORAL-LIMITED-AP - Optus Customer Network · registered in Australia

IPv4 addresses1,0241 prefixes · <0.001% of announced IPv4

Rank in Australia#532largest network in AU by IPv4 space, of 1,660 · <0.01% of AU

Rank worldwide#36,214of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryAustralia1,688 ASNs registered there

Open AS4778 in ASN lookup Look up an IP in this network (203.20.216.1) All networks in Australia

IPv4 prefixes

All 1 prefix, in address order.

203.20.216.0/22

Other ASNs named Optus Customer Network

6 other networks use the same organisation name; together with AS4778 they announce 72,448 IPv4 addresses.

ASNNameIPv4 addresses

AS18191AIRSERVICESAUS-AP - OPTUS CUSTOMER NETWORK AU65,536

AS10128IAG-AS-AP - Optus Customer Network AU2,304

AS4643TXU-AS-AP - Optus Customer Network AU1,792

AS24510HOLMESGLEN-INSTITUTE-OF-TAFE-AP - Optus Customer Network AU1,024

AS10150TENNET-AU-AP - Optus Customer Network AU512

AS9672WEST-AUSTRALIAN-NEWSPAPERS-AP - Optus Customer Network AU256

Similar-sized networks in Australia

ASNNameIPv4 addresses

AS45240#529 NETWIDE-AU-AS-AP - REA Group, A subsidiary of Netwide,1,024

AS136735#530 DATAKNOX-AS-AP - DataKnox Pty Limited1,024

AS136805#531 NGVPL-AS-AP - Next Generation Voice PTY LTD1,024

AS4825#533 FAL-AS-AP - Metcash Trading Ltd1,024

AS7647#534 OTNPL-AS-AP - OnTheNet Pty Ltd1,024

AS9479#535 OTG-AU - Operations & Technology Group1,024

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources