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AS1221

ASN-TELSTRA

Telstra Limited

Registry

Authoritative registration data

AS number
1221
Name
ASN-TELSTRA
Organisation
Telstra Limited
Country
Flag of Australia AU Australia
RIR
APNIC
Registered
Source:asn:rdap retrieved

IPv4 prefixes

282

IPv6 prefixes

2

Total announced

284

Announced prefixes

Observed in BGP by route collectors, not a registry allocation list

Prefixes announced by AS1221
1.128.0.0/11 IPv4 /11 not checked
101.160.0.0/11 IPv4 /11 not checked
121.208.0.0/12 IPv4 /12 not checked
124.176.0.0/12 IPv4 /12 not checked
58.160.0.0/12 IPv4 /12 not checked
1.120.0.0/13 IPv4 /13 not checked
110.144.0.0/13 IPv4 /13 not checked
120.144.0.0/13 IPv4 /13 not checked
203.40.0.0/13 IPv4 /13 not checked
60.224.0.0/13 IPv4 /13 not checked
120.152.0.0/14 IPv4 /14 not checked
144.132.0.0/14 IPv4 /14 not checked
203.36.0.0/14 IPv4 /14 not checked
203.48.0.0/14 IPv4 /14 not checked
110.140.0.0/15 IPv4 /15 not checked
120.156.0.0/15 IPv4 /15 not checked
123.210.0.0/15 IPv4 /15 not checked
144.136.0.0/15 IPv4 /15 not checked
203.52.0.0/15 IPv4 /15 not checked
101.103.0.0/16 IPv4 /16 not checked
110.142.0.0/16 IPv4 /16 not checked
110.143.0.0/16 IPv4 /16 not checked
120.158.0.0/16 IPv4 /16 not checked
123.209.0.0/16 IPv4 /16 not checked
125.255.0.0/16 IPv4 /16 not checked
137.147.0.0/16 IPv4 /16 not checked
138.130.0.0/16 IPv4 /16 not checked
138.217.0.0/16 IPv4 /16 not checked
139.130.0.0/16 IPv4 /16 not checked
139.134.0.0/16 IPv4 /16 not checked
139.168.0.0/16 IPv4 /16 not checked
143.238.0.0/16 IPv4 /16 not checked
144.131.0.0/16 IPv4 /16 not checked
144.139.0.0/16 IPv4 /16 not checked
144.140.0.0/16 IPv4 /16 not checked
147.69.0.0/16 IPv4 /16 not checked
149.135.0.0/16 IPv4 /16 not checked
165.228.0.0/16 IPv4 /16 not checked
203.35.0.0/16 IPv4 /16 not checked
203.54.0.0/16 IPv4 /16 not checked
144.130.0.0/17 IPv4 /17 not checked
203.58.128.0/17 IPv4 /17 not checked
61.9.128.0/17 IPv4 /17 not checked
144.130.192.0/18 IPv4 /18 not checked
202.12.128.0/18 IPv4 /18 not checked
203.143.192.0/18 IPv4 /18 not checked
203.27.128.0/18 IPv4 /18 not checked
203.58.64.0/18 IPv4 /18 not checked
144.130.160.0/19 IPv4 /19 not checked
192.148.128.0/19 IPv4 /19 not checked
192.74.160.0/19 IPv4 /19 not checked
202.12.192.0/19 IPv4 /19 not checked
202.7.64.0/19 IPv4 /19 not checked
203.100.224.0/19 IPv4 /19 not checked
203.58.32.0/19 IPv4 /19 not checked
210.23.128.0/19 IPv4 /19 not checked
61.8.0.0/19 IPv4 /19 not checked
144.130.144.0/20 IPv4 /20 not checked
192.74.144.0/20 IPv4 /20 not checked
192.74.192.0/20 IPv4 /20 not checked
202.1.240.0/20 IPv4 /20 not checked
202.12.224.0/20 IPv4 /20 not checked
203.14.0.0/20 IPv4 /20 not checked
203.18.112.0/20 IPv4 /20 not checked
203.29.160.0/20 IPv4 /20 not checked
192.148.120.0/21 IPv4 /21 not checked
203.12.144.0/21 IPv4 /21 not checked
203.17.40.0/21 IPv4 /21 not checked
203.62.248.0/21 IPv4 /21 not checked
158.45.0.0/22 IPv4 /22 not checked
158.45.60.0/22 IPv4 /22 not checked
164.108.24.0/22 IPv4 /22 not checked
192.148.116.0/22 IPv4 /22 not checked
192.148.160.0/22 IPv4 /22 not checked
192.74.140.0/22 IPv4 /22 not checked
203.16.180.0/22 IPv4 /22 not checked
203.26.8.0/22 IPv4 /22 not checked
203.30.92.0/22 IPv4 /22 not checked
203.32.16.0/22 IPv4 /22 not checked
203.62.148.0/22 IPv4 /22 not checked
103.226.244.0/23 IPv4 /23 not checked
103.247.118.0/23 IPv4 /23 not checked
122.200.24.0/23 IPv4 /23 not checked
153.112.128.0/23 IPv4 /23 not checked
192.148.164.0/23 IPv4 /23 not checked
202.12.240.0/23 IPv4 /23 not checked
203.14.116.0/23 IPv4 /23 not checked
203.24.134.0/23 IPv4 /23 not checked
203.24.32.0/23 IPv4 /23 not checked
203.30.92.0/23 IPv4 /23 not checked
203.30.94.0/23 IPv4 /23 not checked
203.31.62.0/23 IPv4 /23 not checked
203.34.78.0/23 IPv4 /23 not checked
203.55.14.0/23 IPv4 /23 not checked
203.9.190.0/23 IPv4 /23 not checked
103.136.214.0/24 IPv4 /24 not checked
103.136.215.0/24 IPv4 /24 not checked
103.149.43.0/24 IPv4 /24 not checked
103.195.64.0/24 IPv4 /24 not checked
103.247.118.0/24 IPv4 /24 not checked
103.247.119.0/24 IPv4 /24 not checked
103.58.212.0/24 IPv4 /24 not checked
103.58.34.0/24 IPv4 /24 not checked
103.58.35.0/24 IPv4 /24 not checked
103.78.241.0/24 IPv4 /24 not checked
136.238.200.0/24 IPv4 /24 not checked
143.223.18.0/24 IPv4 /24 not checked
143.223.87.0/24 IPv4 /24 not checked
146.144.9.0/24 IPv4 /24 not checked
148.80.1.0/24 IPv4 /24 not checked
149.176.112.0/24 IPv4 /24 not checked
149.176.116.0/24 IPv4 /24 not checked
149.176.172.0/24 IPv4 /24 not checked
149.176.221.0/24 IPv4 /24 not checked
149.176.223.0/24 IPv4 /24 not checked
149.176.225.0/24 IPv4 /24 not checked
149.176.226.0/24 IPv4 /24 not checked
149.176.227.0/24 IPv4 /24 not checked
149.176.244.0/24 IPv4 /24 not checked
149.176.246.0/24 IPv4 /24 not checked
149.176.248.0/24 IPv4 /24 not checked
149.176.250.0/24 IPv4 /24 not checked
149.176.251.0/24 IPv4 /24 not checked
149.176.252.0/24 IPv4 /24 not checked
149.176.253.0/24 IPv4 /24 not checked
149.176.254.0/24 IPv4 /24 not checked
149.176.255.0/24 IPv4 /24 not checked
156.22.1.0/24 IPv4 /24 not checked
156.22.2.0/24 IPv4 /24 not checked
158.146.145.0/24 IPv4 /24 not checked
158.146.152.0/24 IPv4 /24 not checked
158.45.100.0/24 IPv4 /24 not checked
158.45.104.0/24 IPv4 /24 not checked
158.45.112.0/24 IPv4 /24 not checked
158.45.116.0/24 IPv4 /24 not checked
158.45.120.0/24 IPv4 /24 not checked
158.45.13.0/24 IPv4 /24 not checked
158.45.14.0/24 IPv4 /24 not checked
159.222.184.0/24 IPv4 /24 not checked
160.187.61.0/24 IPv4 /24 not checked
164.108.10.0/24 IPv4 /24 not checked
164.108.104.0/24 IPv4 /24 not checked
164.108.105.0/24 IPv4 /24 not checked
164.108.12.0/24 IPv4 /24 not checked
164.108.13.0/24 IPv4 /24 not checked
164.108.17.0/24 IPv4 /24 not checked
164.108.181.0/24 IPv4 /24 not checked
164.108.9.0/24 IPv4 /24 not checked
168.233.31.0/24 IPv4 /24 not checked
180.94.27.0/24 IPv4 /24 not checked
192.111.105.0/24 IPv4 /24 not checked
192.131.150.0/24 IPv4 /24 not checked
192.158.45.0/24 IPv4 /24 not checked
192.195.197.0/24 IPv4 /24 not checked
192.243.20.0/24 IPv4 /24 not checked
192.243.21.0/24 IPv4 /24 not checked
192.243.22.0/24 IPv4 /24 not checked
192.243.23.0/24 IPv4 /24 not checked
192.74.139.0/24 IPv4 /24 not checked
192.74.208.0/24 IPv4 /24 not checked
198.57.15.0/24 IPv4 /24 not checked
202.12.242.0/24 IPv4 /24 not checked
202.3.74.0/24 IPv4 /24 not checked
202.36.14.0/24 IPv4 /24 not checked
202.4.181.0/24 IPv4 /24 not checked
202.58.226.0/24 IPv4 /24 not checked
202.70.143.0/24 IPv4 /24 not checked
202.8.92.0/24 IPv4 /24 not checked
202.93.155.0/24 IPv4 /24 not checked
203.11.4.0/24 IPv4 /24 not checked
203.12.132.0/24 IPv4 /24 not checked
203.12.231.0/24 IPv4 /24 not checked
203.12.62.0/24 IPv4 /24 not checked
203.12.83.0/24 IPv4 /24 not checked
203.13.76.0/24 IPv4 /24 not checked
203.13.77.0/24 IPv4 /24 not checked
203.14.160.0/24 IPv4 /24 not checked
203.14.161.0/24 IPv4 /24 not checked
203.14.222.0/24 IPv4 /24 not checked
203.14.223.0/24 IPv4 /24 not checked
203.148.93.0/24 IPv4 /24 not checked
203.15.254.0/24 IPv4 /24 not checked
203.15.68.0/24 IPv4 /24 not checked
203.16.140.0/24 IPv4 /24 not checked
203.17.162.0/24 IPv4 /24 not checked
203.18.34.0/24 IPv4 /24 not checked
203.18.35.0/24 IPv4 /24 not checked
203.2.228.0/24 IPv4 /24 not checked
203.20.197.0/24 IPv4 /24 not checked
203.20.199.0/24 IPv4 /24 not checked
203.20.238.0/24 IPv4 /24 not checked
203.20.239.0/24 IPv4 /24 not checked
203.20.43.0/24 IPv4 /24 not checked
203.20.87.0/24 IPv4 /24 not checked
203.21.192.0/24 IPv4 /24 not checked
203.21.193.0/24 IPv4 /24 not checked
203.21.194.0/24 IPv4 /24 not checked
203.21.195.0/24 IPv4 /24 not checked
203.21.196.0/24 IPv4 /24 not checked
203.21.197.0/24 IPv4 /24 not checked
203.21.198.0/24 IPv4 /24 not checked
203.21.199.0/24 IPv4 /24 not checked
203.21.49.0/24 IPv4 /24 not checked
203.21.50.0/24 IPv4 /24 not checked
203.21.51.0/24 IPv4 /24 not checked
203.21.52.0/24 IPv4 /24 not checked
203.21.53.0/24 IPv4 /24 not checked
203.21.54.0/24 IPv4 /24 not checked
203.21.55.0/24 IPv4 /24 not checked
203.21.56.0/24 IPv4 /24 not checked
203.21.57.0/24 IPv4 /24 not checked
203.21.58.0/24 IPv4 /24 not checked
203.21.59.0/24 IPv4 /24 not checked
203.21.63.0/24 IPv4 /24 not checked
203.22.134.0/24 IPv4 /24 not checked
203.22.147.0/24 IPv4 /24 not checked
203.22.150.0/24 IPv4 /24 not checked
203.22.83.0/24 IPv4 /24 not checked
203.23.20.0/24 IPv4 /24 not checked
203.23.21.0/24 IPv4 /24 not checked
203.23.41.0/24 IPv4 /24 not checked
203.23.75.0/24 IPv4 /24 not checked
203.23.86.0/24 IPv4 /24 not checked
203.24.126.0/24 IPv4 /24 not checked
203.24.170.0/24 IPv4 /24 not checked
203.24.194.0/24 IPv4 /24 not checked
203.25.142.0/24 IPv4 /24 not checked
203.25.248.0/24 IPv4 /24 not checked
203.25.253.0/24 IPv4 /24 not checked
203.26.175.0/24 IPv4 /24 not checked
203.26.245.0/24 IPv4 /24 not checked
203.27.193.0/24 IPv4 /24 not checked
203.27.225.0/24 IPv4 /24 not checked
203.27.56.0/24 IPv4 /24 not checked
203.27.69.0/24 IPv4 /24 not checked
203.27.72.0/24 IPv4 /24 not checked
203.28.234.0/24 IPv4 /24 not checked
203.29.94.0/24 IPv4 /24 not checked
203.3.100.0/24 IPv4 /24 not checked
203.3.101.0/24 IPv4 /24 not checked
203.3.102.0/24 IPv4 /24 not checked
203.30.201.0/24 IPv4 /24 not checked
203.30.64.0/24 IPv4 /24 not checked
203.31.63.0/24 IPv4 /24 not checked
203.32.16.0/24 IPv4 /24 not checked
203.32.17.0/24 IPv4 /24 not checked
203.32.18.0/24 IPv4 /24 not checked
203.33.151.0/24 IPv4 /24 not checked
203.33.251.0/24 IPv4 /24 not checked
203.34.131.0/24 IPv4 /24 not checked
2001:8000::/20 IPv6 /20 RPKI valid
2401:a480::/48 IPv6 /48 RPKI not found

No rows match “”.

Showing – of

Source:ripestat:announced-prefixes observed

252 of 284 announced prefixes, least specific first.

Internet Exchanges

Exchanges where this network has a listed peering LAN connection

No Internet Exchange memberships found

The exchange directory has no current membership records for this AS.

Source:peeringdb retrieved

Exchange membership means the network has a listed connection; it does not prove peering with other members.

Observed adjacencies

Networks seen next to AS1221 in BGP paths by route collectors.

Source:ripestat:asn-neighbours observed

Observed upstreams

6 networks seen before AS1221 in AS paths

Observed upstreams
Families
AS4637 ASN-TELSTRA-GLOBAL 59,600 385,105
v4 v6
AS35280 F5 312 7,613
v4 v6
AS4826 VOCUS-BACKBONE-AS 23 25
v4
AS149515 FALCORE1-AS-AP 1 7
v4
AS38195 SUPERLOOP-AS-AP 2 3
v4
AS7575 AARNET-AS-AP 1 1
v4

No rows match “”.

Showing – of

Observed downstreams

100 networks seen after AS1221 in AS paths

Observed downstreams
Families
AS4637 ASN-TELSTRA-GLOBAL 58,066 458,844
v4
AS135887 TELSTRA-BELONG-AP 271 78,755
v4 v6
AS20940 AKAMAI-ASN1 1,875 36,535
v4 v6
AS4764 AUSSIEFIBRE-AS-AP 4,542 23,407
v4 v6
AS16509 AMAZON-02 254 18,371
v4 v6
AS9507 NEXTHOP-AS-AP 5,321 17,841
v4 v6
AS45763 OPTICOMMCOPTYLTD-AS-AP 255 12,324
v4 v6
AS10235 NAB-AS-AP 301 9,352
v4
AS20473 AS-VULTR 3,696 9,223
v4 v6
AS49915 MEGAPORT 2,317 8,494
v4 v6
AS15830 Equinix 1,593 6,545
v4 v6
AS4826 VOCUS-BACKBONE-AS 187 6,490
v4 v6
AS7545 TPG-INTERNET-AP 8 5,210
v4
AS63956 INT-5GN-AS-AP 1,115 4,469
v4 v6
AS9893 DSE-VIC-GOV-AS 179 4,004
v4
AS21859 ZEN-ECN 673 3,706
v4 v6
AS45437 RWTS-AS-AP 1,207 3,643
v4 v6
AS60068 CDN77 1,142 3,472
v4 v6
AS139049 GIGACOMM-AS-AP 424 2,710
v4 v6
AS18055 CENTRELINK 404 2,677
v4 v6
AS37978 NETTAS-AS-AP 300 2,672
v4
AS132528 DIGICELAUSPTYLTD-AS-AP 617 2,585
v4
AS31898 ORACLE-BMC-31898 80 2,558
v4 v6
AS54113 FASTLY 275 2,488
v4 v6
AS133934 AUSIT-AS-AP 432 2,485
v4 v6
AS132029 ASN-TELSTRA-02 270 2,450
v4 v6
AS58511 ANYCAST-GLOBAL-BACKBONE 741 2,221
v4 v6
AS3360 DXC-AS3360 445 2,090
v4 v6
AS132847 NETSG-AS-AP 674 1,996
v4 v6
AS4608 APNIC-SERVICES 351 1,813
v4 v6
AS24313 NSW-DET-AS 154 1,671
v4
AS23943 HYPERSPIKE-AS-AU-AP 183 1,586
v4
AS13335 CLOUDFLARENET 262 1,563
v4 v6
AS9880 NEXTGENNET-AS1-AU-AP 148 1,503
v4
AS136988 LEASEWEB-AS-AP 249 1,438
v4 v6
AS23918 NTTIP-AS-AP 520 1,423
v4 v6
AS30103 ZOOM-VIDEO-COMM-AS 149 1,301
v4 v6
AS55478 VEDAADNET1-AS-AU 154 1,247
v4
AS56105 VICDET-AS-AP 301 1,173
v4
AS59267 INTUITTECHNOLOGIESPTYLTD-AS-AP 255 1,172
v4
AS135879 HYUNDAI-AS-AP 433 1,164
v4
AS9342 ABC-AS-AP 256 1,159
v4
AS56294 VMVAULT-AS-AP 143 1,066
v4
AS38903 AUSTUNITY-AS-AP 151 1,008
v4
AS138186 TNPL-AS-AP 158 1,007
v4
AS7474 OPTUSCOM-AS01-AU 170 991
v4 v6
AS38858 SOMERVILLE-AS-AU-AP 145 980
v4
AS137470 ILUKA-AS-AP 172 977
v4
AS17559 SPECTUM-NON-AP 59 963
v4
AS109 CISCOSYSTEMS 250 944
v4 v6
AS18191 AIRSERVICESAUS-AP 152 835
v4
AS38813 EMANTRA-AS-AP 151 835
v4
AS55542 RMSNET-AS-AP 31 760
v4
AS13445 WEBEX 137 736
v4 v6
AS45926 WEBINABOX-AS-AP 366 701
v4 v6
AS38066 DECC-AS-AP 150 692
v4
AS58869 RAY-AS-AP 259 673
v4 v6
AS399361 ALCOA-CORP 145 668
v4
AS132484 MPAMSHL-AS-AP 290 666
v4
AS24007 SEVEN-AS-AP 153 664
v4
AS9544 PIP-AS-AP 71 664
v4
AS139819 RAA-AS-AP 267 657
v4 v6
AS3573 ACCENTURE 348 650
v4 v6
AS137204 THEBEND-AS-AP 236 643
v4 v6
AS10310 YAHOO-1 348 638
v4 v6
AS24463 PACIFICNATIONALSERVICES-AS-AP 151 534
v4
AS36351 SOFTLAYER 77 525
v4 v6
AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK 109 515
v4 v6
AS152588 CRGPL-AS-AP 149 504
v4
AS45949 MCMILLANSHAKESPEAREAUST-AS-AP 147 504
v4
AS45589 ENERGYAUST-AS 145 504
v4
AS136522 TAFENSW-AS2-AP 294 501
v4
AS153589 VOLVO-GROUP-IT-APNIC-AS-AP 152 501
v4
AS136585 LEIDOS-AS-AP 147 501
v4
AS59206 CENET-AS-AP 145 501
v4
AS59330 RRHAPPL-AS-AP 293 498
v4
AS18361 ASX-AS-AP 167 492
v4
AS18165 RESMED-AS-SYD 162 492
v4
AS149515 FALCORE1-AS-AP 228 486
v4
AS153814 WOOLWORTHSGROUP-AS-AP 272 475
v4
AS134555 ENCOO-AS-AP 297 470
v4 v6
AS135415 RACQ-AS-AP 178 455
v4 v6
AS133853 CYB-AS-AP 165 445
v4
AS9426 WESTPAC-AS-AP 33 431
v4
AS133081 SRO-AS-AP 30 407
v4
AS134984 NEXTGEN-AS-AP 111 384
v4
AS152175 SOGPL-AS-AP 148 378
v4
AS137442 CAIRNSAIRPORT-AS-AP 152 360
v4 v6
AS55256 NETSKOPE 31 350
v4
AS9912 VOCUS-AU 253 337
v4 v6
AS38447 ALS-AS-AP 248 337
v4 v6
AS13014 HEWLETT-PACKARD-ENTERPRISE-APJ 149 336
v4
AS134080 TOXFREE-AS-AP 148 336
v4
AS132162 SANTOS-AS-AP 145 336
v4
AS134787 TMB-AS-AP 145 336
v4
AS137234 145 336
v4
AS38438 162 335
v4
AS151822 TOYOTA-AS-AP 159 335
v4
AS24316 POWERLINK-AS-AP 291 334
v4
AS18431 DFAT-AS-AP 150 334
v4

No rows match “”.

Showing – of

Uncertain adjacencies

1 adjacencies that may be an artefact of collector peering

Uncertain adjacencies
Families
AS4608 APNIC-SERVICES 58,815 469,325
v4

No rows match “”.

Showing – of

Note:
These are observed adjacencies derived from BGP path data, not confirmed commercial relationships. A network appearing before another in an AS path does not establish that it is a paying transit customer, a settlement free peer, or anything else contractual. Adjacencies marked uncertain were seen only as direct peers of a route collector, so the collector's own peering may have created them.