AS18191 OPTUS CUSTOMER NETWORK

AIRSERVICESAUS-AP - OPTUS CUSTOMER NETWORK · registered in Australia

IPv4 addresses65,53610 prefixes · 0.002% of announced IPv4

Rank in Australia#68largest network in AU by IPv4 space, of 1,660 · 0.17% of AU

Rank worldwide#3,202of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryAustralia1,688 ASNs registered there

Open AS18191 in ASN lookup Look up an IP in this network (168.132.0.1) All networks in Australia

IPv4 prefixes

All 10 prefixes, in address order.

168.132.0.0/18
168.132.64.0/19
168.132.96.0/20
168.132.112.0/21
168.132.120.0/23
168.132.122.0/23
168.132.124.0/22
168.132.128.0/18
168.132.192.0/19
168.132.224.0/19

Other ASNs named OPTUS CUSTOMER NETWORK

6 other networks use the same organisation name; together with AS18191 they announce 72,448 IPv4 addresses.

ASNNameIPv4 addresses

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

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

AS4778BORAL-LIMITED-AP - Optus Customer Network AU1,024

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

AS9983#65 ABS-AS-AP - Australian Bureau of Statistics.65,536

AS10079#66 UNIWESTSYD-AS-AP - University of Western Sydney65,536

AS17750#67 ASN-ENERGEX-AP - ENERGEX LIMITED65,536

AS23719#69 USYD-AS-AP - University of Sydney65,536

AS24313#70 NSW-DET-AS - NSW Department of Education65,536

AS24434#71 JCU-AS-AP - James Cook University65,536

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