AS17756 — AUSPOST Australia Post

AS17756 announces 14 IPv4 prefixes covering 63,232 addresses and 0 IPv6 prefixes.

About this network

The AS handle AUSPOST is held by Australia Post.

What it's used for

• The address space is registered under the netname AUST-POST with the registrant Australian Postal Corporation, indicating an internal corporate estate for the national postal service.
• The AS announces 63232 IPv4 addresses across 31 prefixes, all located in Australia, while maintaining only 2 observed neighbours. This high address-to-neighbour ratio, combined with the single corporate registrant, identifies this as a segmented internal network rather than a transit or access provider.

Notable

• All sampled prefixes share the same registrant, Australian Postal Corporation, which aligns directly with the AS holder name.
• The inventory consists entirely of IPv4 space within the 155.144.0.0/16 range, subdivided into various /19, /20, /21, /22, and /23 blocks, reflecting site-by-site or functional segmentation of the corporate infrastructure.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 155.144.0.0/19
• 155.144.32.0/20
• 155.144.48.0/22
• 155.144.52.0/23
• 155.144.63.0/24
• 155.144.64.0/18
• 155.144.128.0/20
• 155.144.145.0/24
• 155.144.146.0/23
• 155.144.148.0/22
• 155.144.152.0/21
• 155.144.160.0/19
• 155.144.192.0/18
• 203.171.5.0/24

Upstream networks

• AS32787 Akamai Technologies, Inc.
• AS2764 AAPT Limited

Adjacent networks

• AS32787 Akamai Technologies, Inc.
• AS2764 AAPT Limited

Routing security

• RPKI: 0 valid, 0 invalid and 24 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 92% of announcements registered; 22 route objects.
• Listed in as-sets: AS-KDDCUSTOMER2, AS-OPTUS, AS-PROLE, AS-SUPERLOOP-CUST, AS-TELSTRA-INTL-CUSTOMERS, AS-TELSTRA-INTL-CUSTOMERS-4637, AS2764:AS-BGP-CUSTS.