Home Prefix Lookup166.120.66.0/23

166.120.66.0/23 - Westpac Banking Corporation (AS9547)

IPv4APNICannouncedAS9547WESTPAC-AS-AP - Westpac Banking Corporation RPKI Valid

CIDR

166.120.66.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇦🇺 Australia

City

Kogarah

RIR

APNIC

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
166.120.66.0/23	AS9547 WESTPAC-AS-AP - Westpac Banking Corporation	Valid	APNIC	2026-10-12

Related Announcements

2 less-specific, 2 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
166.120.64.0/19	AS9426 WESTPAC-AS-AP - Westpac Bank	Valid	-	2026-10-12
166.120.64.0/22	AS9426 WESTPAC-AS-AP - Westpac Bank	Valid	-	2026-10-12
166.120.66.0/24	AS9426 WESTPAC-AS-AP - Westpac Bank	Invalid	-	2026-10-12
166.120.66.0/24	AS9547 WESTPAC-AS-AP - Westpac Banking Corporation	Valid	-	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
166.120.66.0/23	AS9547	/24	apnic
166.120.64.0/22	AS9426	/22	apnic
166.120.64.0/19	AS9426	/19	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS9547	APNIC	MAINT-WESTPAC-AU	2026-08-08

Origin ASN

AS9547

WESTPAC-AS-AP - Westpac Banking Corporation

Related Prefixes

Covering prefix

166.120.64.0/22AS9426

More prefixes of AS9547

All prefixes of AS9547 →

Geolocation

Country🇦🇺AustraliaAU

RegionNew South Wales

CityKogarah

Coordinates-33.9630, 151.1340 ↗

Learn more

RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
RPKI validatorCheck ROA coverage for any prefix or ASN
What is BGP?How prefixes are announced and routed
More-specific prefixesGlossary: covering and more-specific routes
IPv4 transfers in the APNIC regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/166.120.66.0/23

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/166.120.66.0/23" | jq

External Links

RIPEstat