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If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	110.5.80.0/22	275 Kent St. Sydney NSW, 2000
	110.5.80.0/24	275 Kent St. Sydney NSW, 2000
	110.5.81.0/24	275 Kent St. Sydney NSW, 2000
	110.5.82.0/24	275 Kent St. Sydney NSW, 2000
	110.5.83.0/24	275 Kent St. Sydney NSW, 2000
	110.5.84.0/22	275 Kent St. Sydney NSW, 2000
	110.5.86.0/24	275 Kent St. Sydney NSW, 2000
	110.5.87.0/24	275 Kent St. Sydney NSW, 2000
	110.5.88.0/22	275 Kent St. Sydney NSW, 2000
	110.5.88.0/24	275 Kent St. Sydney NSW, 2000
	110.5.89.0/24	275 Kent St. Sydney NSW, 2000
	110.5.92.0/24	275 Kent St. Sydney NSW, 2000
	110.5.92.0/22	275 Kent St. Sydney NSW, 2000
	110.5.93.0/24	275 Kent St. Sydney NSW, 2000
	110.5.94.0/24	275 Kent St. Sydney NSW, 2000
	110.5.95.0/24	275 Kent St. Sydney NSW, 2000
	166.120.0.0/24	Westpac Banking Corporation
	166.120.0.0/22	Westpac Banking Corporation
	166.120.1.0/24	Westpac Banking Corporation
	166.120.3.0/24	Westpac Banking Corporation
	166.120.4.0/24	Westpac Banking Corporation
	166.120.4.0/22	Westpac Banking Corporation
	166.120.5.0/24	Westpac Banking Corporation
	166.120.6.0/24	Westpac Banking Corporation
	166.120.7.0/24	Westpac Banking Corporation
	166.120.64.0/19	Westpac Banking Corporation
	166.120.64.0/22	Westpac Banking Corporation
	166.120.65.0/24	Westpac Banking Corporation
	166.120.66.0/24	Westpac Banking Corporation
	166.120.80.0/20	Westpac Banking Corporation
	166.120.164.0/22	Westpac Banking Corporation
	166.120.164.0/24	Westpac Banking Corporation
	166.120.165.0/24	Westpac Banking Corporation
	166.120.167.0/24	Westpac Banking Corporation
	166.120.200.0/22	Westpac Banking Corporation
	166.120.202.0/24	Westpac Banking Corporation
	166.120.203.0/24	Westpac Banking Corporation
	166.120.212.0/22	Westpac Banking Corporation
	166.120.212.0/24	Westpac Banking Corporation
	166.120.216.0/24	Westpac Banking Corporation
	166.120.216.0/22	Westpac Banking Corporation
	203.16.39.0/24	Westpac Banking Corporation
	203.23.44.0/24	Westpac Banking Corporation
	203.24.0.0/22	Westpac Banking Corporation
	203.24.1.0/24	Westpac Banking Corporation
	203.24.3.0/24	Westpac Banking Corporation
	203.24.4.0/22	Westpac Banking Corporation
	203.24.4.0/24	Westpac Banking Corporation
	203.24.5.0/24	Westpac Banking Corporation
	203.24.6.0/24	Westpac Banking Corporation
	203.24.7.0/24	Westpac Banking Corporation

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS32787	Akamai (Prolexic)	✔	✘
	AS7474	SingTel Optus Pty Ltd	✔	✘
	AS1221	Telstra Limited	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS32787	Akamai (Prolexic)	✔	✘
	AS7474	SingTel Optus Pty Ltd	✔	✘
	AS1221	Telstra Limited	✔	✘

aut-num:        AS9426
as-name:        WESTPAC-AS-AP
descr:          Westpac Bank
descr:          Retail Bank in Australia
country:        AU
import:         from AS1221 action pref=100; accept ANY
import:         from AS7474 action pref=10; accept ANY
export:         to AS1221 announce AS9426
export:         to AS7474 announce AS9426
default:        to AS1221 action pref=100; networks ANY
default:        to AS7474 action pref=10; networks ANY
remarks:        ******** 981015
org:            ORG-SOPL2-AP
admin-c:        BJ6-AP
tech-c:         GT14-AP
abuse-c:        AO399-AP
mnt-lower:      MAINT-OPTUSCOM-AP
mnt-routes:     MAINT-OPTUSCOM-AP
mnt-by:         APNIC-HM
mnt-irt:        IRT-OPTUSCOM-AU
last-modified:  2021-01-15T01:45:02Z
source:         APNIC


organisation:   ORG-SOPL2-AP
org-name:       SingTel Optus Pty Ltd
org-type:       LIR
country:        AU
address:        ********
address:        ********
phone:          ********
fax-no:         ********
# Email removed, Log into bgp.tools to see whois emails
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2025-09-25T13:05:45Z
source:         APNIC

Last Update: 2026-02-11T03:22:26Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-telstra-testing-1	11790
APNIC	as7474:as-customers	22592
RADB	as-kddcustomer2	8206
RADB	as7606:as-sa-ix	23953
LEVEL3	as-sprint-origins	7309
APNIC	as-set-bsccl	2115
APNIC	as1221:as-customers	4717
RADB	as-optus	23103
RADB	as2764:as-bgp-custs	1001
RADB	as-telstra-intl-customers	11999
RADB	as7545:as-tpgn-customers	1604
RADB	as-prole	1194