Autonomous system
AS10235 NAB-AS-AP National Australia Bank Limited
Unclassified APNIC
Summary
National Australia Bank Limited
NAB-AS-AP belongs to National Australia Bank Limited, one of Australia's four major banks. AS10235 is the bank's own corporate network, not a product sold to anyone.
What it's used for
Carrying NAB's internal estate: branch and contact-centre connectivity, corporate offices, data centres, and the internet-facing edge in front of its retail and institutional banking platforms. The AS announces 61 IPv4 prefixes totalling roughly 139,800 addresses and no IPv6. The bulk of that comes from two legacy class-B allocations, 155.60.0.0/16 and 164.53.0.0/16, plus 203.8.32.0/19 from APNIC. The 164.53.0.0/16 block is then re-announced as a long tail of /22s, /23s and /24s — the classic shape of an enterprise deaggregating its own space so that individual sites, DMZs and data-centre segments can be steered independently across redundant links.
Notable
This is an enterprise network, and the neighbour count is what settles it. Nearly 140,000 addresses with only one observed BGP neighbour describes an organisation that buys connectivity and does not sell it. A carrier holding comparable space would show hundreds of adjacencies; a hosting provider would show server-style rDNS across many customer domains. A bank of NAB's size holding a large legacy allocation is unremarkable — the address space was granted when swathes of /16s went to large institutions, and it has simply never been given back.
Do not read this space as consumer broadband. Any address here is far more likely to be a bank office, ATM network segment or corporate proxy than a subscriber.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 88 prefixes · 136K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| AU | Australia | 88 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS10235- Registry name
- NAB-AS-AP
- Registrant
- National Australia Bank Limited
- Abuse contact
- ip.admin@nab.com.au
- Registered
- 2008-09-04
- Last changed
- 2020-07-07
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 98% valid · 64 valid, 1 with no ROA
- ROAs
- 74 authorising AS10235
- ASPA
- no ASPA record
- IRR
- 100% registered · 65 of 65 announcements
- Route objects
- 592 naming AS10235
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,779 prefixes, as published 2026-10-22. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere