Autonomous system
AS9723 ISEEK-AS-AP iseek Communications Pty Ltd
Unclassified APNIC
Summary
iseek Communications
legacy isp hosting business
AS9723 (ISEEK-AS-AP) is held by iseek Communications Pty Ltd, a Brisbane-headquartered Australian network and data centre operator. iseek sells connectivity, colocation and cloud services to businesses, government and carriers, with a strong presence in Queensland and regional Australia.
What it's used for
The AS carries a substantial, fragmented inventory: 157 IPv4 prefixes covering 81,152 addresses, plus 2 IPv6 blocks (2407:6800::/32 and a /48), and — the number that defines its role — 34 observed BGP neighbours. Thirty-four adjacencies is far more than an enterprise or a campus (two or three) and far short of a wholesale backbone (hundreds). It is the signature of a regional provider: a handful of upstreams, a spread of IX peers, and a set of downstream customers running their own BGP.
The prefixes back that up. The largest aggregate is 202.83.64.0/19, with the rest in 123.200.0.0/17, 1.178.0.0/15 and 202.183.0.0/16 space carved into /20s through /24s. The reverse DNS is the clincher: it mixes iseek's own infrastructure (mxproc3.iseek.com.au) with third-party service names and, tellingly, other operators' customer-access naming such as dyn-…gazaltelecom.com.au and …dsl.earthlink.com.au. Space carrying another provider's DSL subscribers has been sold on, not consumed in-house.
Notable
- Heavy fragmentation with a modest address count is the classic shape of a B2B provider assigning small blocks per customer site, not a residential ISP handing out large dynamic pools.
- iseek runs colocation data centres alongside the network, so this single AS spans transit, access and hosting roles.
- The business was folded into a listed digital-infrastructure vehicle in a data centre consolidation deal, which is why the brand appears under different corporate parents depending on the source.
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
Recorded at 12 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Megaport IX Sydney | Sydney, Australia | 103.26.68.91 |
| Equinix Internet Exchange Sydney | Sydney, Australia | 45.127.172.160 |
| IX Australia (Sydney NSW) | Sydney, Australia | 218.100.52.32 |
| Edge Internet Exchange - Sydney | Sydney, Australia | 202.77.88.84 |
| Megaport IX Melbourne | Melbourne, Australia | 103.26.71.107 |
| Megaport IX Brisbane | Brisbane, Australia | 103.26.70.69 |
| IX Australia (Melbourne VIC) | Melbourne, Australia | 218.100.78.86 |
| IX Australia (Brisbane QLD) | Brisbane, Australia | 218.100.76.29 |
Transit providers
6 upstream, 23 downstream and 35 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 89 prefixes · 76.54K addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| AU | Australia | 92 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS9723- Registry name
- ISEEK-AS-AP
- Registrant
- Iseek Communications Pty Ltd
- Abuse contact
- abuse@iseek.com.au
- Registered
- 2008-09-04
- Last changed
- 2022-08-16
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 99% valid · 157 valid, 2 with no ROA
- ROAs
- 182 authorising AS9723
- ASPA
- no ASPA record
- IRR
- 99.4% registered · 158 of 159 announcements
- Route objects
- 305 naming AS9723
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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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