asn.dev

Adjacent networks

AS1221 ASN-TELSTRA Telstra Limited

Mobile APNIC

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS1221 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS4637Telstra GlobalUnclassifiedIPv4 IPv6579,711
AS4608Asia Pacific Network Information CentreUnclassifiedIPv4 IPv6465,833
AS135887Belong (Telstra Limited)UnclassifiedIPv4 IPv628,139
AS20940Akamai International B.V.HostingIPv4 IPv610,275
AS4764Aussie BroadbandResidentialIPv4 IPv67,968
AS7545TPG Telecom LimitedResidentialIPv45,209
AS9507NextHop Pty LtdUnclassifiedIPv4 IPv65,138
AS16509Amazon.com, Inc.HostingIPv4 IPv64,301
AS45763Opticomm Co Pty LtdResidentialIPv4 IPv63,914
AS49915Megaport (UK) LimitedUnclassifiedIPv4 IPv63,464
AS20473The Constant Company, LLCHostingIPv4 IPv62,751
AS15830Equinix (EMEA) Acquisition Enterprises B.V.HostingIPv4 IPv62,592
AS4826Vocus Connect International BackboneUnclassifiedIPv41,908
AS10235National Australia Bank LimitedUnclassifiedIPv41,767
AS9893CenitexUnclassifiedIPv41,440
AS21859Zenlayer IncHostingIPv4 IPv61,265
AS45437Real World - The CoreResidentialIPv4 IPv61,202
AS60068Datacamp LimitedHostingIPv4 IPv61,131
AS639565G NETWORK OPERATIONS PTY LTDUnclassifiedIPv4 IPv61,058
AS37978Networking TasmaniaUnclassifiedIPv4960
AS18055Department of Human ServicesUnclassifiedIPv4 IPv6912
AS132029Telstra LimitedUnclassifiedIPv4 IPv6838
AS139049GIGACOMM PTY LTDUnclassifiedIPv4 IPv6800
AS132528DIGICEL (AUS) PTY LTDResidentialIPv4777
AS31898Oracle CorporationHostingIPv4 IPv6725
AS133934AUS IT SERVICES PTY LTDUnclassifiedIPv4 IPv6718
AS54113Fastly, Inc.HostingIPv4 IPv6679
AS3360DXC US Latin America CorporationUnclassifiedIPv4 IPv6645
AS132847Network Solutions Group Pty LtdResidentialIPv4 IPv6626
AS7474SingTel Optus Pty LtdUnclassifiedIPv4 IPv6622
AS24313NSW Department of EducationUnclassifiedIPv4601
AS13335Cloudflare, Inc.HostingIPv4 IPv6579
AS23943Hyperspike Pty Ltd,UnclassifiedIPv4578
AS58511Anycast Global BackboneUnclassifiedIPv4 IPv6552
AS9880NextGen.Net Pty Ltd, North SydneyUnclassifiedIPv4540
AS55478Level 15, 100 arthur StreetUnclassifiedIPv4455
AS136988LEASEWEB AUSTRALIA PTY LIMITEDUnclassifiedIPv4 IPv6450
AS17559Spectrums Core NetworkResidentialIPv4439
AS56105Department of Education and Training - VictoriaEducationIPv4424
AS135879Hyundai Motor Company Australia Pty LtdUnclassifiedIPv4420
AS59267Intuit Technologies Pty LtdUnclassifiedIPv4408
AS9342Australian Broadcasting CorporationUnclassifiedIPv4378
AS56294VMvault Pty LtdResidentialIPv4369
AS38903Australian Unity LimitedUnclassifiedIPv4366
AS138186Tasmanian Networks Pty LtdUnclassifiedIPv4365
AS137470Iluka Resources LimitedUnclassifiedIPv4355
AS38813Emantra Pty LtdUnclassifiedIPv4353
AS35280F5 Networks SARLHostingIPv4 IPv6318
AS38858SomervilleUnclassifiedIPv4301
AS18191OPTUS CUSTOMER NETWORKUnclassifiedIPv4300

Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.

Derived from routing tables collected at 2026-10-31 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.50M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.