All ASNs

Autonomous System details for AS1221

AS1221

Telstra Limited • telstra.net

AS1221 — Telstra Limited

AS Name

ASN-TELSTRA

Country

Australia (AU)

Website

telstra.net

Number of IPv4

13,403,136

Number of IPv6

3.25 × 10³²

ASN type

ISP

Status

Allocated

Registry

APNIC

Allocated

January 31, 2000

Last updated

May 03, 2024

IP Ranges

282 IPv4 prefixes, 2 IPv6 prefixes

Prefix	Company	Number of IPs
1.120.0.0/13	Telstra Limited	524,288
1.128.0.0/11	Telstra Limited	2,097,152
58.160.0.0/12	Telstra Limited	1,048,576
60.224.0.0/13	Telstra Limited	524,288
61.8.0.0/19	Telstra Limited	8,192
61.9.128.0/17	Telstra Limited	32,768
66.111.164.0/24	McDonald's Corporation	256
66.111.166.0/24	McDonald's Corporation	256
66.111.168.0/24	McDonald's Corporation	256
66.111.171.0/24	McDonald's Corporation	256
66.111.173.0/24	McDonald's Corporation	256
101.103.0.0/16	Telstra Limited	65,536
101.160.0.0/11	Telstra Limited	2,097,152
103.58.34.0/24	SONIC HEALTHCARE LIMITED	256
103.58.35.0/24	SONIC HEALTHCARE LIMITED	256
103.58.212.0/24	OneNet Limited	256
103.78.241.0/24	WESLEY COMMUNITY SERVICES LIMITED	256
103.136.214.0/24	Australian Redcross Blood Service	256
103.136.215.0/24	Australian Redcross Blood Service	256
103.149.43.0/24	7-Eleven Stores Pty Ltd	256
103.195.64.0/24	LIVINGSTONE INTERNATIONAL PTY. LIMITED	256
103.226.244.0/23	Peak Services Pty Ltd	512
103.247.118.0/23	Medibank Private Ltd	512
103.247.118.0/24	Medibank Private Ltd	256
103.247.119.0/24	Medibank Private Ltd	256
110.140.0.0/15	Telstra Limited	131,072
110.142.0.0/16	Telstra Limited	65,536
110.143.0.0/16	Telstra Limited	65,536
110.144.0.0/13	Telstra Limited	524,288
120.144.0.0/13	Telstra Limited	524,288
120.152.0.0/14	Telstra Limited	262,144
120.156.0.0/15	Telstra Limited	131,072
120.158.0.0/16	Telstra Limited	65,536
121.208.0.0/12	Telstra Limited	1,048,576
122.200.24.0/23	Thales Australia	512
123.209.0.0/16	Telstra Limited	65,536
123.210.0.0/15	Telstra Limited	131,072
124.176.0.0/12	Telstra Limited	1,048,576
125.255.0.0/16	Telstra Limited	65,536
129.41.78.0/24	Kyndryl	256
136.238.200.0/24	Schindler Informatik AG	256
137.147.0.0/16	Telstra Limited	65,536
138.130.0.0/16	Telstra Limited	65,536
138.217.0.0/16	Telstra Limited	65,536
139.130.0.0/16	Telstra Limited	65,536
139.134.0.0/16	Telstra Limited	65,536
139.168.0.0/16	Telstra Limited	65,536
143.223.18.0/24	WME	256
143.223.87.0/24	WME	256
143.238.0.0/16	Telstra Limited	65,536
144.130.0.0/17	Telstra Limited	32,768
144.130.144.0/20	Telstra Limited	4,096
144.130.160.0/19	Telstra Limited	8,192
144.130.192.0/18	Telstra Limited	16,384
144.131.0.0/16	Telstra Limited	65,536
144.132.0.0/14	Telstra Limited	262,144
144.136.0.0/15	Telstra Limited	131,072
144.139.0.0/16	Telstra Limited	65,536
144.140.0.0/16	Telstra Limited	65,536
146.144.9.0/24	Cenitex	256
147.69.0.0/16	Telstra Limited	65,536
149.135.0.0/16	Telstra Limited	65,536
149.176.112.0/24	Vic Roads	256
149.176.116.0/24	Vic Roads	256
149.176.172.0/24	Vic Roads	256
149.176.221.0/24	Vic Roads	256
149.176.223.0/24	Vic Roads	256
149.176.225.0/24	Vic Roads	256
149.176.226.0/24	Vic Roads	256
149.176.227.0/24	Vic Roads	256
149.176.244.0/24	Vic Roads	256
149.176.246.0/24	Vic Roads	256
149.176.248.0/24	Vic Roads	256
149.176.250.0/24	Vic Roads	256
149.176.251.0/24	Vic Roads	256
149.176.252.0/24	Vic Roads	256
149.176.253.0/24	Vic Roads	256
149.176.254.0/24	Vic Roads	256
149.176.255.0/24	Vic Roads	256
156.22.1.0/24	Northern Sydney Local Health District	256
156.22.2.0/24	Northern Sydney Local Health District	256
158.45.0.0/22		1,024
158.45.13.0/24		256
158.45.14.0/24		256
158.45.60.0/22		1,024
158.45.100.0/24		256
158.45.104.0/24		256
158.45.112.0/24		256
158.45.116.0/24		256
158.45.120.0/24		256
158.146.145.0/24	THE HERTZ CORP.	256
158.146.152.0/24	THE HERTZ CORP.	256
159.222.184.0/24	5757 N. Green Bay Ave	256
160.187.61.0/24	City of Holdfast Bay	256
164.108.9.0/24	Sydney Water Corporation	256
164.108.10.0/24	Sydney Water Corporation	256
164.108.12.0/24	Sydney Water Corporation	256
164.108.13.0/24	Sydney Water Corporation	256
164.108.17.0/24	Sydney Water Corporation	256
164.108.24.0/22	Sydney Water Corporation	1,024
2001:8000::/20	Department of Immigration	3.25 × 10³²
2401:a480::/48	Deere & Company	1.21 × 10²⁴

This table only shows the first 100 of the set of IPv4 and IPv6 prefixes. All data is available via our IP data API.

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS1221

11 peers

AS703 AS4826 AS2687 AS3356 AS10026 AS15169 AS16276 AS35280 AS38195 AS38880 AS136557

AS1221 peers with these other Autonomous Systems.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS1221

1 upstreams

AS4637

AS1221 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS1221 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS1221

290 downstreams

AS109 AS714 AS800 AS2764 AS3360 AS3573 AS4608 AS4764 AS4801 AS4825 AS7474 AS7486 AS8360 AS9342 AS9408 AS9417 AS9426 AS9507 AS9518 AS9544 AS9880 AS9893 AS9912 AS10105 AS10235 AS10310 AS11019 AS12041 AS13014 AS13335 AS13445 AS13631 AS14340 AS14593 AS14689 AS15084 AS15830 AS16466 AS16509 AS16838 AS16839 AS17158 AS18055 AS18165 AS18191 AS18361 AS18431 AS19551 AS19637 AS20144 AS20464 AS20473 AS20940 AS21859 AS22604 AS22764 AS23344 AS23918 AS23921 AS23938 AS23943 AS24007 AS24017 AS24069 AS24120 AS24303 AS24313 AS24316 AS24463 AS24476 AS24516 AS26380 AS30103 AS31898 AS32590 AS32787 AS32934 AS35928 AS36236 AS36351 AS36692 AS37978 AS38049 AS38066 AS38232 AS38236 AS38260 AS38302 AS38327 AS38438 AS38447 AS38472 AS38561 AS38714 AS38804 AS38813 AS38858 AS38903 AS40339 AS45160 AS45207 AS45437 AS45589 AS45626 AS45744 AS45763 AS45824 AS45852 AS45867 AS45926 AS45931 AS45949 AS45956 AS46014 AS49915 AS53712 AS53813 AS54113 AS55256 AS55302 AS55365 AS55366 AS55478 AS55506 AS55525 AS55542 AS55729 AS56105 AS56177 AS56271 AS56294 AS57976 AS58418 AS58511 AS58664 AS58869 AS59206 AS59267 AS59330 AS59865 AS60068 AS60410 AS62597 AS63850 AS63956 AS64204 AS64420 AS131225 AS131290 AS131581 AS131999 AS132029 AS132077 AS132102 AS132162 AS132257 AS132321 AS132370 AS132484 AS132492 AS132528 AS132594 AS132616 AS132619 AS132703 AS132789 AS132812 AS132847 AS133081 AS133403 AS133417 AS133853 AS133930 AS133934 AS134080 AS134408 AS134463 AS134498 AS134555 AS134678 AS134679 AS134725 AS134747 AS134787 AS134984 AS135039 AS135069 AS135415 AS135530 AS135565 AS135574 AS135609 AS135612 AS135668 AS135879 AS135887 AS136008 AS136049 AS136154 AS136388 AS136508 AS136521 AS136522 AS136585 AS136615 AS136935 AS136954 AS136988 AS137010 AS137044 AS137070 AS137182 AS137192 AS137204 AS137230 AS137234 AS137442 AS137470 AS137555 AS137847 AS137864 AS137896 AS137903 AS137924 AS137945 AS137968 AS138027 AS138165 AS138186 AS138209 AS138214 AS138484 AS138511 AS139289 AS139341 AS139356 AS139465 AS139583 AS139615 AS139661 AS139700 AS139745 AS139777 AS139785 AS139829 AS139848 AS140070 AS140603 AS140627 AS140694 AS140959 AS141229 AS141365 AS141392 AS142114 AS142283 AS149017 AS149515 AS150115 AS150121 AS150680 AS150717 AS151641 AS151822 AS152164 AS152167 AS152175 AS152588 AS152667 AS152670 AS153467 AS153589 AS153642 AS153760 AS153814 AS154501 AS154570 AS197000 AS198949 AS200596 AS206720 AS393226 AS394434 AS394977 AS396922 AS396986 AS397074 AS399361 AS399937 AS400318

AS1221 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.