123.209.0.0/16

AS1221 · Telstra Limited

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Summary

Country	Australia
Domain	telstra.net
ASN	AS1221
Registry	APNIC
ID	TELSTRAINTERNET46-AU

WHOIS Details

inetnum:        123.208.0.0 - 123.211.255.255
netname:        TELSTRAINTERNET46-AU
descr:          Telstra Limited
country:        AU
org:            ORG-TC6-AP
admin-c:        TIAR-AP
tech-c:         TAN2-AP
abuse-c:        AT1005-AP
status:         ALLOCATED PORTABLE
remarks:        -----
remarks:        All reports regarding SPAM or security breaches
remarks:        should be addressed to abuse@telstra.net
remarks:        ------
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AU-TIAR-AP
mnt-routes:     MAINT-AU-TIAR-AP
mnt-irt:        IRT-TELSTRA-AU
last-modified:  2024-05-10T00:50:21Z
geofeed:        https://geofeed.tools.telstra.net/geofeed.csv
source:         APNIC

irt:            IRT-TELSTRA-AU
address:        Telstra Internet
e-mail:         abuse@telstra.net
abuse-mailbox:  abuse@telstra.net
admin-c:        TIAR-AP
tech-c:         TIAR-AP
auth:           # Filtered
remarks:        abuse@telstra.net was validated on 2025-07-15
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2025-11-18T00:26:24Z
source:         APNIC

organisation:   ORG-TC6-AP
org-name:       Telstra Limited
org-type:       LIR
country:        AU
address:        242 Exhibition Street
e-mail:         corporateaddressing@team.telstra.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2024-12-06T08:30:50Z
source:         APNIC

role:           ABUSE TELSTRAAU
country:        ZZ
address:        Telstra Internet
phone:          +000000000
e-mail:         abuse@telstra.net
admin-c:        TIAR-AP
tech-c:         TIAR-AP
nic-hdl:        AT1005-AP
remarks:        Generated from irt object IRT-TELSTRA-AU
remarks:        abuse@telstra.net was validated on 2025-07-15
abuse-mailbox:  abuse@telstra.net
mnt-by:         APNIC-ABUSE
last-modified:  2025-07-15T22:43:15Z
source:         APNIC

role:           Telstra AU NOC
address:        Telstra Internet
address:        242 Exhibition Street
address:        Melbourne
address:        VIC 3000
country:        AU
phone:          +61 3 8650 3305
e-mail:         ipnoc-au@team.telstra.com
admin-c:        TIAR-AP
tech-c:         TIAR-AP
nic-hdl:        TAN2-AP
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2025-11-26T05:11:17Z
source:         APNIC

person:         Telstra Internet Address Registry
address:        Telstra Internet
address:        242 Exhibition St
address:        Melbourne
address:        VIC 3000
country:        AU
phone:          +61 000000000
e-mail:         addressing@telstra.net
nic-hdl:        TIAR-AP
remarks:        Telstra Internet Address Registry Role Object
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2021-12-09T22:28:56Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 123.0.0.0/8

Range	ASN	Company	Num of IPs
123.8.0.0/13	AS4837	China Unicom Henan province network	524,288
123.128.0.0/13	AS4837	China Unicom Shandong Province Network	524,288
123.216.0.0/13	AS4713	NTT DOCOMO BUSINESS,Inc.	524,288
123.152.0.0/13	AS4837	China Unicom Zhejiang province network	524,288
123.244.0.0/14	AS134762	CHINANET liaoning province network	262,144
123.140.0.0/14	AS138195	LG DACOM Corporation	262,144
123.180.0.0/14	AS4134	CHINANET hebei province network	262,144
123.164.0.0/14	AS4134	CHINANET HEILONGJIANG PROVINCE NETWORK	262,144
123.160.0.0/14	AS137687	CHINANET henan province network	262,144
123.144.0.0/14	AS4837	China Unicom Chongqing province network	262,144
123.168.0.0/14	AS4809	CHINANET SHANDONG PROVINCE NETWORK	262,144
123.4.0.0/14	AS4837	China Unicom Henan province network	262,144
123.180.0.0/14	AS58539	CHINANET hebei province network	262,144
123.224.0.0/14	AS4713	NTT DOCOMO BUSINESS,Inc.	262,144
123.164.0.0/14	AS137691	CHINANET HEILONGJIANG PROVINCE NETWORK	262,144
123.52.0.0/14	AS137687	CHINANET HENAN PROVINCE NETWORK	262,144
123.188.0.0/14	AS4837	China Unicom Liaoning province network	262,144
123.184.0.0/14	AS137688	CHINANET liaoning province network	262,144
123.244.0.0/14	AS137688	CHINANET liaoning province network	262,144
123.184.0.0/14	AS4134	CHINANET liaoning province network	262,144
123.244.0.0/14	AS17799	CHINANET liaoning province network	262,144
123.52.0.0/14	AS4134	CHINANET HENAN PROVINCE NETWORK	262,144
123.164.0.0/14	AS17897	CHINANET HEILONGJIANG PROVINCE NETWORK	262,144
123.52.0.0/14	AS139018	CHINANET HENAN PROVINCE NETWORK	262,144
123.232.0.0/14	AS4837	China Unicom Shandong Province Network	262,144
123.52.0.0/14	AS139587	CHINANET HENAN PROVINCE NETWORK	262,144
123.160.0.0/14	AS4134	CHINANET henan province network	262,144
123.164.0.0/14	AS4809	CHINANET HEILONGJIANG PROVINCE NETWORK	262,144
123.160.0.0/14	AS139018	CHINANET henan province network	262,144
123.168.0.0/14	AS4134	CHINANET SHANDONG PROVINCE NETWORK	262,144
123.244.0.0/14	AS4134	CHINANET liaoning province network	262,144
123.140.0.0/14	AS3786	LG DACOM Corporation	262,144
123.184.0.0/14	AS134762	CHINANET liaoning province network	262,144
123.192.0.0/14	AS38841	kbro CO. Ltd.	262,144
123.104.0.0/14	AS9595	NTT EAST, Inc.	262,144
123.212.0.0/14	AS9318	SK Broadband Co Ltd	262,144
123.202.0.0/15	AS9269	Hong Kong Broadband Network Ltd	131,072
123.228.0.0/15	AS9644	SK Telecom	131,072
123.150.0.0/15	AS58542	CHINANET TIANJIN PROVINCE NETWORK	131,072
123.150.0.0/15	AS4809	CHINANET TIANJIN PROVINCE NETWORK	131,072
123.206.0.0/15	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	131,072
123.178.0.0/15	AS4134	CHINANET neimeng province network	131,072
123.204.0.0/15	AS4780	Digital United Inc.	131,072
123.150.0.0/15	AS17638	CHINANET TIANJIN PROVINCE NETWORK	131,072
123.172.0.0/15	AS4134	CHINANET JILIN PROVINCE NETWORK	131,072
123.172.0.0/15	AS4809	CHINANET JILIN PROVINCE NETWORK	131,072
123.178.0.0/15	AS4809	CHINANET neimeng province network	131,072
123.174.0.0/15	AS4134	CHINANET shangxi province network	131,072
123.96.0.0/15	AS4134	CHINANET Zhejiang province network	131,072
123.56.0.0/15	AS37963	Aliyun Computing Co., LTD	131,072

Hosted domains

There are 12 domain names hosted across 12 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
123.209.112.211	oznook.com	2
123.209.113.1	au-web.com	1
123.209.125.51	flyashaustralia.com.au	1
123.209.163.94	raefamily.com.au	1
123.209.109.164	ballfm.com.au	1
123.209.193.45	carouselride.au	1
123.209.244.35	bic-gateway.com	1
123.209.44.76	generategroup.co	1
123.209.89.191	burkertcloud.com	1
123.209.209.55	monproducts.com.au	1
123.209.99.184	carouselride.au	1
123.209.220.4	overyonder.xyz	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

10,955 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
123.209.140.192	AS1221 Telstra Limited	`44.30ms` from Melbourne, AU
123.209.72.78	AS1221 Telstra Limited	`8.37ms` from Sydney, AU
123.209.70.152	AS1221 Telstra Limited	`8.49ms` from Sydney, AU
123.209.98.50	AS1221 Telstra Limited	`9.13ms` from Sydney, AU
123.209.111.231	AS1221 Telstra Limited	`7.76ms` from Sydney, AU
123.209.197.67	AS1221 Telstra Limited	`9.22ms` from Sydney, AU
123.209.205.80	AS1221 Telstra Limited	`12.88ms` from Sydney, AU
123.209.146.157	AS1221 Telstra Limited	`14.06ms` from Melbourne, AU
123.209.87.249	AS1221 Telstra Limited	`10.46ms` from Sydney, AU
123.209.125.75	AS1221 Telstra Limited	`11.23ms` from Sydney, AU
123.209.126.48	AS1221 Telstra Limited	`7.31ms` from Sydney, AU
123.209.75.202	AS1221 Telstra Limited	`10.73ms` from Sydney, AU
123.209.102.155	AS1221 Telstra Limited	`7.77ms` from Sydney, AU
123.209.136.143	AS1221 Telstra Limited	`27.41ms` from Melbourne, AU
123.209.67.74	AS1221 Telstra Limited	`8.67ms` from Sydney, AU
123.209.160.43	AS1221 Telstra Limited	`29.94ms` from Melbourne, AU
123.209.124.81	AS1221 Telstra Limited	`8.50ms` from Sydney, AU
123.209.224.83	AS1221 Telstra Limited	`13.39ms` from Sydney, AU
123.209.94.119	AS1221 Telstra Limited	`8.41ms` from Sydney, AU
123.209.117.247	AS1221 Telstra Limited	`8.06ms` from Sydney, AU
123.209.85.244	AS1221 Telstra Limited	`11.66ms` from Sydney, AU
123.209.105.30	AS1221 Telstra Limited	`12.31ms` from Sydney, AU
123.209.212.137	AS1221 Telstra Limited	`9.16ms` from Sydney, AU
123.209.141.205	AS1221 Telstra Limited	`53.18ms` from Melbourne, AU
123.209.138.59	AS1221 Telstra Limited	`28.93ms` from Melbourne, AU

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
161.10.29.48	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`1.40ms` from Bogota, CO
172.168.208.160	AS8075 Microsoft Corporation	`0.19ms` from Des Moines, US
213.163.137.160	AS8434 Telenor Sverige AB	`4.47ms` from Falkenberg, SE
3.123.86.16	AS16509 Amazon.com, Inc.	`0.17ms` from Frankfurt am Main, DE
84.176.94.64	AS3320 Deutsche Telekom AG	`8.22ms` from Frankfurt am Main, DE
184.167.243.144	AS33588 Charter Communications LLC	`8.12ms` from Greenwood Village, US
58.42.53.0	AS4134 CHINANET-BACKBONE	`4.04ms` from Guiyang, CN
163.171.202.32	AS54994 Meteverse Limited.	`0.51ms` from Hong Kong, HK
104.48.111.0	AS7018 AT&T Enterprises, LLC	`3.56ms` from Houston, US
116.255.101.16	AS38680 CMB	`2.40ms` from Incheon, KR
60.21.21.16	AS4837 CHINA UNICOM China169 Backbone	`8.38ms` from Liaoyang, CN
81.145.146.16	AS2856 British Telecommunications PLC	`4.09ms` from London, GB
34.36.156.32	AS396982 Google LLC	`0.07ms` from Melbourne, AU
100.16.173.144	AS701 Verizon Business	`4.90ms` from Philadelphia, US
50.39.226.48	AS20055 Wholesail networks LLC	`0.90ms` from Portland, US
112.245.156.160	AS4837 CHINA UNICOM China169 Backbone	`5.26ms` from Qingdao, CN
47.208.93.160	AS19108 Optimum	`13.90ms` from San Jose, US
14.5.23.16	AS17858 LG POWERCOMM	`2.04ms` from Seoul, KR
1.163.19.160	AS3462 Data Communication Business Group	`1.26ms` from Taipei, TW
198.146.107.192	AS19957 AT&T Enterprises, LLC	`9.77ms` from Atlanta, US
147.161.88.32	AS35699 Adamo Telecom Iberia S.A.	`1.18ms` from Barcelona, ES
167.114.189.48	AS16276 OVH SAS	`0.07ms` from Beauharnois, CA
16.144.242.16	AS16509 Amazon.com, Inc.	`0.51ms` from Boardman, US
50.66.189.48	AS6327 Shaw Communications	`4.32ms` from Calgary, CA
149.75.94.160	AS6079 RCN	`16.52ms` from Chicago, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -m8 123.209.245.10

traceroute to 123.209.245.10 (123.209.245.10): 8 hops max, 52 byte packets

1 [AS15169] 142.251.244.117 183.964 ms

2 [AS15169] 192.178.97.90 182.029 ms

3 *

4 [AS1221] 203.50.11.174 193.258 ms

5 [AS1221] 203.54.181.214 190.543 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Council Bluffs, US

On January 9th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

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