AS1221 Telstra Limited
AS1221 (ASN-TELSTRA) is registered to Telstra Limited in AU. It originates 281 prefixes in the global routing table.
279
IPv4 prefixes
2
IPv6 prefixes
13,399,808
IPv4 addresses
44%
RPKI valid
Registration
Who holds AS1221
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
AS number
AS1221
Handle
ASN-TELSTRA
Organization
Telstra Limited
Country
AU
ASPA
1 provider
Routing
What AS1221 announces
Prefixes originated by AS1221 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).
IPv4 prefixes
279
IPv6 prefixes
2
IPv4 addresses
13,399,808 (52,343 /24s)
RPKI valid
126 44%
RPKI invalid
0
RPKI not found
155
ROAs naming AS1221
185
With an IRR route object
199 70%
Prefixes
Announced prefixes
Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.
IPv4 (279)
1.120.0.0/131.128.0.0/1158.160.0.0/1260.224.0.0/1361.8.0.0/1961.9.128.0/1766.111.164.0/2466.111.166.0/2466.111.168.0/2466.111.171.0/2466.111.173.0/24101.103.0.0/16101.160.0.0/11103.58.34.0/24103.58.35.0/24103.58.212.0/24103.78.241.0/24103.136.214.0/24103.136.215.0/24103.149.43.0/24103.195.64.0/24103.226.244.0/23103.247.118.0/23103.247.118.0/24103.247.119.0/24110.140.0.0/15110.142.0.0/16110.143.0.0/16110.144.0.0/13120.144.0.0/13120.152.0.0/14120.156.0.0/15120.158.0.0/16121.208.0.0/12122.200.24.0/23123.209.0.0/16123.210.0.0/15124.176.0.0/12125.255.0.0/16136.238.200.0/24137.147.0.0/16138.130.0.0/16138.217.0.0/16139.130.0.0/16139.134.0.0/16139.168.0.0/16143.223.18.0/24143.223.87.0/24143.238.0.0/16144.130.0.0/17144.130.144.0/20144.130.160.0/19144.130.192.0/18144.131.0.0/16144.132.0.0/14144.136.0.0/15144.139.0.0/16144.140.0.0/16146.144.9.0/24147.69.0.0/16148.80.1.0/24149.135.0.0/16149.176.112.0/24149.176.116.0/24149.176.172.0/24149.176.221.0/24149.176.223.0/24149.176.225.0/24149.176.226.0/24149.176.227.0/24149.176.244.0/24149.176.246.0/24149.176.248.0/24149.176.250.0/24149.176.251.0/24149.176.252.0/24149.176.253.0/24149.176.254.0/24149.176.255.0/24156.22.1.0/24156.22.2.0/24158.45.0.0/22158.45.13.0/24158.45.14.0/24158.45.60.0/22158.45.100.0/24158.45.104.0/24158.45.112.0/24158.45.116.0/24158.45.120.0/24158.146.145.0/24158.146.152.0/24164.108.9.0/24164.108.10.0/24164.108.12.0/24164.108.13.0/24164.108.17.0/24164.108.24.0/22164.108.104.0/24164.108.105.0/24164.108.181.0/24165.228.0.0/16168.233.31.0/24180.94.27.0/24192.74.139.0/24192.74.140.0/22192.74.144.0/20192.74.160.0/19192.74.192.0/20192.74.208.0/24192.111.105.0/24192.131.150.0/24192.148.116.0/22192.148.120.0/21192.148.128.0/19192.148.160.0/22192.148.164.0/23192.158.45.0/24192.195.197.0/24192.243.20.0/24
Show 159 more
192.243.21.0/24192.243.22.0/24192.243.23.0/24198.57.15.0/24202.1.240.0/20202.3.74.0/24202.4.181.0/24202.7.64.0/19202.8.92.0/24202.12.128.0/18202.12.192.0/19202.12.224.0/20202.12.240.0/23202.12.242.0/24202.36.14.0/24202.58.226.0/24202.70.143.0/24202.93.155.0/24203.2.228.0/24203.3.100.0/24203.3.101.0/24203.3.102.0/24203.4.130.0/24203.4.131.0/24203.4.192.0/24203.4.193.0/24203.4.196.0/24203.5.58.0/24203.5.88.0/24203.5.176.0/24203.5.177.0/24203.6.127.0/24203.6.171.0/24203.8.90.0/24203.9.190.0/23203.11.4.0/24203.12.62.0/24203.12.83.0/24203.12.132.0/24203.12.144.0/21203.12.231.0/24203.13.76.0/24203.13.77.0/24203.14.0.0/20203.14.116.0/23203.14.160.0/24203.14.161.0/24203.14.222.0/24203.14.223.0/24203.15.68.0/24203.15.254.0/24203.16.140.0/24203.16.180.0/22203.17.40.0/21203.17.162.0/24203.18.34.0/24203.18.35.0/24203.18.112.0/20203.20.43.0/24203.20.87.0/24203.20.197.0/24203.20.199.0/24203.20.238.0/24203.20.239.0/24203.21.49.0/24203.21.50.0/24203.21.51.0/24203.21.52.0/24203.21.53.0/24203.21.54.0/24203.21.55.0/24203.21.56.0/24203.21.57.0/24203.21.58.0/24203.21.59.0/24203.21.63.0/24203.21.192.0/24203.21.193.0/24203.21.194.0/24203.21.195.0/24203.21.196.0/24203.21.197.0/24203.21.198.0/24203.21.199.0/24203.22.83.0/24203.22.134.0/24203.22.147.0/24203.22.150.0/24203.23.20.0/24203.23.21.0/24203.23.41.0/24203.23.75.0/24203.23.86.0/24203.24.32.0/23203.24.126.0/24203.24.134.0/23203.24.170.0/24203.24.194.0/24203.25.142.0/24203.25.248.0/24203.25.253.0/24203.26.8.0/22203.26.175.0/24203.26.245.0/24203.27.56.0/24203.27.69.0/24203.27.72.0/24203.27.128.0/18203.27.193.0/24203.27.225.0/24203.28.234.0/24203.29.94.0/24203.29.160.0/20203.30.64.0/24203.30.92.0/22203.30.92.0/23203.30.94.0/23203.30.201.0/24203.31.62.0/23203.31.63.0/24203.32.16.0/22203.32.16.0/24203.32.17.0/24203.32.18.0/24203.33.151.0/24203.33.251.0/24203.34.41.0/24203.34.68.0/24203.34.78.0/23203.34.131.0/24203.34.223.0/24203.34.228.0/24203.34.229.0/24203.35.0.0/16203.36.0.0/14203.40.0.0/13203.48.0.0/14203.52.0.0/15203.54.0.0/16203.55.14.0/23203.55.98.0/24203.55.180.0/24203.55.186.0/24203.56.94.0/24203.57.219.0/24203.58.32.0/19203.58.64.0/18203.58.128.0/17203.62.148.0/22203.62.202.0/24203.62.205.0/24203.62.248.0/21203.92.248.0/24203.92.252.0/24203.100.224.0/19203.143.192.0/18203.148.93.0/24206.225.235.0/24210.23.128.0/19
IPv6 (2)
RPKI valid RPKI invalid no ROA covers it
Neighbors
Who AS1221 is reached through
The AS just before AS1221 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.
ASPA
Provider authorization
AS1221 publishes an ASPA naming this provider. 10 ASes name it as a provider in theirs. Check a path.
IRR
Routing registry objects
From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.
| Source | as-name | Maintained by |
|---|---|---|
| APNIC | ASN-TELSTRA | APNIC-HM |
Route objects with origin AS1221: APNIC 380 · ARIN 2 · RADB 2 · ALTDB 1 · RIPE 1
as-sets that list AS1221 (22)
AS-17665:AS-CUSTOMERSAS-BTN-CUSTOMERSAS-CTPL-PEERS-UAS-HURRICANEV6AS-KDDCUSTOMER2AS-LUMEN-CUSTOMERS-ASNSAS-OCCAID6-CUSTOMERSAS-OCCAID_GIPS-APC-CAS-PDOXUPLINKAUAS-REACH-CUSTOMERSAS-TELSTRA-INTL-CUSTOMERSAS-TELSTRA-INTL-CUSTOMERS-4637AS-TEST-CUSTOMERSAS-UDOSAS-VODAFONE-NET-INAS-XO-BAS1221:AS-TELSTRAAS17665:AS-CUSTOMERSAS198949:AS-SDAS199746:AS-BLACKLISTAS204464:AS-BLACKLISTAS46528:AS-PEERS