AS9723 — ISEEK-AS-AP iseek Communications Pty Ltd

AS9723 announces 87 IPv4 prefixes covering 76,544 addresses and 3 IPv6 prefixes.

About this network

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.

Announced prefixes

• 1.178.2.0/23
• 1.178.66.0/23
• 1.178.80.0/24
• 1.178.82.0/23
• 1.178.84.0/23
• 1.178.96.0/22
• 1.178.176.0/22
• 1.179.0.0/23
• 1.179.4.0/22
• 1.179.8.0/22
• 1.179.12.0/23
• 1.179.16.0/21
• 1.179.48.0/22
• 1.179.96.0/22
• 58.87.0.0/20
• 103.38.10.0/23
• 103.72.202.0/23
• 103.95.77.0/24
• 103.143.44.0/24
• 110.238.21.0/24
• 110.238.24.0/23
• 110.238.144.0/23
• 110.238.146.0/24
• 110.238.240.0/23
• 110.239.32.0/23
• 110.239.128.0/21
• 110.239.176.0/24
• 110.239.178.0/24
• 119.12.80.0/22
• 119.13.0.0/21
• 119.13.8.0/23
• 119.13.10.0/24
• 119.13.48.0/24
• 119.13.144.0/22
• 119.13.176.0/23
• 119.13.178.0/24
• 119.13.240.0/23
• 121.52.192.0/21
• 121.91.96.0/23
• 121.91.199.0/24
• 123.200.128.0/22
• 123.200.134.0/23
• 123.200.137.0/24
• 123.200.138.0/23
• 123.200.140.0/22
• 123.200.144.0/20
• 123.200.160.0/21
• 123.200.168.0/23
• 123.200.172.0/24
• 123.200.174.0/23
• 123.200.179.0/24
• 123.200.180.0/22
• 123.200.186.0/23
• 123.200.188.0/23
• 123.200.200.0/23
• 123.200.208.0/20
• 123.200.240.0/23
• 160.236.107.0/24
• 160.250.72.0/24
• 202.74.64.0/21
• 202.83.64.0/21
• 202.83.72.0/22
• 202.83.76.0/24
• 202.83.78.0/23
• 202.83.80.0/20
• 202.176.15.0/24
• 202.183.96.0/22
• 202.183.100.0/23
• 202.183.102.0/24
• 202.183.104.0/22
• 202.183.108.0/24
• 202.183.110.0/23
• 202.183.112.0/21
• 202.183.120.0/22
• 202.183.126.0/23
• 203.16.25.0/24
• 203.31.82.0/24
• 210.56.64.0/24
• 210.56.68.0/22
• 210.56.152.0/21
• 220.157.64.0/24
• 220.157.70.0/23
• 220.157.74.0/23
• 220.157.79.0/24
• 220.157.80.0/21
• 220.157.90.0/23
• 220.157.92.0/22
• 2001:df0:4b00::/48
• 2001:df7:3540::/48
• 2407:6800::/32

Upstream networks

• AS7474 SingTel Optus Pty Ltd
• AS4826 Vocus Connect International Backbone
• AS6939 Hurricane Electric LLC
• AS24482 SG.GS
• AS64073 Vetta Group
• AS4608 Asia Pacific Network Information Centre

Downstream networks

• AS134688 YourFibre Pty Ltd
• AS132309 Redd digital services pty ltd
• AS150798 WSA CO Limited
• AS17741 Medical Objects Pty Ltd
• AS135294 Queensland Airports Limited
• AS134459 Infotech Solutions Pty Ltd
• AS58750 ThinkEx Holdings Pty Ltd
• AS131225 Level 21
• AS137536 CERNER CORPORATION PTY LIMITED
• AS150127 Lactalis Australia Pty Ltd
• AS134163 ValuePRO Software Pty Ltd
• AS133876 e-secure Pty Ltd
• AS141044 Gallagher Bassett Services Pty Ltd
• AS135153 Kassawin Pty Ltd
• AS138680 COLLECTION HOUSE LIMITED
• AS133859 Telstra Limited
• AS132102 16 - 20 Claremont Street
• AS150139 Conetix Pty Ltd
• AS153640 Crime and Corruption Commission
• AS142143 WESLEY MISSION QUEENSLAND
• AS45937 Brisbane Airport Corporation
• AS45912 Indue Limited
• AS151047 Queensland Urban Utilities

Adjacent networks

• AS7474 SingTel Optus Pty Ltd
• AS4826 Vocus Connect International Backbone
• AS6939 Hurricane Electric LLC
• AS134688 YourFibre Pty Ltd
• AS132309 Redd digital services pty ltd
• AS4608 Asia Pacific Network Information Centre
• AS24482 SG.GS
• AS150798 WSA CO Limited
• AS64073 Vetta Group
• AS17741 Medical Objects Pty Ltd
• AS135294 Queensland Airports Limited
• AS134459 Infotech Solutions Pty Ltd
• AS58750 ThinkEx Holdings Pty Ltd
• AS150127 Lactalis Australia Pty Ltd
• AS137536 CERNER CORPORATION PTY LIMITED
• AS131225 Level 21
• AS141044 Gallagher Bassett Services Pty Ltd
• AS134163 ValuePRO Software Pty Ltd
• AS133876 e-secure Pty Ltd
• AS135153 Kassawin Pty Ltd
• AS138680 COLLECTION HOUSE LIMITED
• AS133859 Telstra Limited
• AS132102 16 - 20 Claremont Street
• AS150139 Conetix Pty Ltd
• AS153640 Crime and Corruption Commission

Internet exchanges

• Megaport IX Sydney — Sydney, Australia
• Equinix Internet Exchange Sydney — Sydney, Australia
• IX Australia (Sydney NSW) — Sydney, Australia
• Edge Internet Exchange - Sydney — Sydney, Australia
• Megaport IX Melbourne — Melbourne, Australia
• Megaport IX Brisbane — Brisbane, Australia
• IX Australia (Melbourne VIC) — Melbourne, Australia
• IX Australia (Brisbane QLD) — Brisbane, Australia
• Megaport IX Perth — Perth, Australia
• Edge Internet Exchange - Adelaide — Adelaide, Australia
• IX Australia (Adelaide SA) — Adelaide, Australia
• Just Another Internet Exchange — Adelaide, Australia