101.103.0.0/16

AS1221 · Telstra Limited

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Summary

Country	Australia
Domain	telstra.net
ASN	AS1221
Registry	APNIC
ID	TELSTRAINTERNET50-AU

WHOIS Details

inetnum:        101.103.0.0 - 101.103.255.255
netname:        TELSTRAINTERNET50-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

route:          101.103.0.0/16
origin:         AS1221
descr:          Telstra Corporation 242 Exhibition Street
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2019-12-11T21:02:38Z
source:         APNIC

route:          101.103.0.0/16
origin:         AS19905
descr:          Telstra Corporation Limited 242 Exhibition Street
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2022-09-12T01:17:25Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 101.0.0.0/8

Range	ASN	Company	Num of IPs
101.160.0.0/11	AS1221	Telstra Limited	2,097,152
101.144.0.0/12	AS9394	China TieTong Telecommunications Corporation	1,048,576
101.16.0.0/12	AS4837	China Unicom Hebei province network	1,048,576
101.224.0.0/13	AS4812	CHINANET SHANGHAI PROVINCE NETWORK	524,288
101.224.0.0/13	AS4809	CHINANET SHANGHAI PROVINCE NETWORK	524,288
101.112.0.0/13	AS18291	VODAFONE AUSTRALIA PTY LIMITED	524,288
101.224.0.0/13	AS4811	CHINANET SHANGHAI PROVINCE NETWORK	524,288
101.64.0.0/13	AS4837	UNICOM ZheJiang Province Network	524,288
101.112.0.0/13	AS133612	VODAFONE AUSTRALIA PTY LIMITED	524,288
101.140.0.0/14	AS17511	OPTAGE Inc.	262,144
101.136.0.0/14	AS17709	Asia Pacific On-Line Service Inc.	262,144
101.136.0.0/14	AS131591	Asia Pacific On-Line Service Inc.	262,144
101.4.0.0/14	AS4538	China Education and Research Network	262,144
101.204.0.0/14	AS4837	UNICOM Sichuan province network	262,144
101.72.0.0/14	AS4837	China Unicom Hebei province network	262,144
101.248.0.0/15	AS4134	CHINANET XIZANG PROVINCE NETWORK	131,072
101.42.0.0/15	AS45090	Tencent Cloud Computing (Beijing) Co., Ltd	131,072
101.76.0.0/15	AS4538	China Education and Research Network	131,072
101.34.0.0/15	AS45090	Tencent Cloud Computing (Beijing) Co., Ltd	131,072
101.60.0.0/15	AS5607	Sky UK Limited	131,072
101.108.0.0/15	AS23969	TOT Public Company Limited	131,072
101.200.0.0/15	AS37963	Aliyun Computing Co., LTD	131,072
101.132.0.0/15	AS37963	Aliyun Computing Co., LTD	131,072
101.124.0.0/16	AS131486	Beijing Jingdong 360 Degree E-commerce Co., Ltd.	65,536
101.124.0.0/16	AS23724	Beijing Jingdong 360 Degree E-commerce Co., Ltd.	65,536
101.202.0.0/16	AS17878	DREAMMARK1	65,536
101.127.0.0/16	AS138345	StarHub Internet Pte Ltd	65,536
101.51.0.0/16	AS23969	TOT Public Company Limited	65,536
101.98.0.0/16	AS9790	Two Degrees Mobile Limited	65,536
101.37.0.0/16	AS37963	Aliyun Computing Co., LTD	65,536
101.129.0.0/16	AS45075	China Central Television	65,536
101.197.0.0/16	AS55992	Beijing Qihu Technology Company Limited	65,536
101.255.0.0/16	AS38511	PT Remala Abadi	65,536
101.40.0.0/16	AS4847	Beijing Teletron Telecom Engineering Co., Ltd.	65,536
101.111.0.0/16	AS9365	its communications Inc.	65,536
101.127.0.0/16	AS4657	StarHub Internet Pte Ltd	65,536
101.51.0.0/16	AS23974	TOT Public Company Limited	65,536
101.39.0.0/16	AS4847	Beijing GreatWall Broadband Telecom Service Co.,Ltd.	65,536
101.127.0.0/16	AS55430	StarHub Internet Pte Ltd	65,536
101.110.128.0/17	AS2914	NTT Ltd Japan Corporation	32,768
101.128.128.0/17	AS2497	Internet Initiative Japan Inc.	32,768
101.78.128.0/17	AS9381	HKBN Enterprise Solutions HK Limited	32,768
101.33.128.0/17	AS45090	Tencent Cloud Computing (Beijing) Co., Ltd	32,768
101.1.128.0/17	AS7522	Pikara(STNet, Incorporated)	32,768
101.99.128.0/17	AS3605	Kuentos Communications, Inc.	32,768
101.33.128.0/17	AS132203	Tencent Cloud Computing (Beijing) Co., Ltd	32,768
101.102.128.0/17	AS17676	SoftBank Corp.	32,768
101.100.0.0/17	AS17492	Vector Communications Ltd	32,768
101.36.128.0/17	AS23724	CNISP-Union Technology (Beijing) Co., Ltd	32,768

Hosted domains

There are no domains currently hosted on this ASN.

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

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Pingable IPs

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

IP Address	ASN	Details
101.103.32.3	AS1221 Telstra Limited	`0.56ms` from Sydney, AU
101.103.192.1	AS1221 Telstra Limited	`0.54ms` from Sydney, AU
101.103.160.3	AS1221 Telstra Limited	`0.57ms` from Sydney, AU
101.103.0.1	AS1221 Telstra Limited	`0.57ms` from Sydney, AU
101.103.64.1	AS1221 Telstra Limited	`0.55ms` from Sydney, AU
101.103.96.3	AS1221 Telstra Limited	`0.59ms` from Sydney, AU
101.103.224.3	AS1221 Telstra Limited	`0.58ms` from Sydney, AU
101.103.128.1	AS1221 Telstra Limited	`0.58ms` from Sydney, 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
62.45.88.0	AS15435 DELTA Fiber Nederland B.V.	`5.68ms` from Amsterdam, NL
35.86.157.192	AS16509 Amazon.com, Inc.	`0.47ms` from Boardman, US
204.199.177.0	AS3549 Level 3 Parent, LLC	`0.51ms` from Caracas, VE
197.144.1.48	AS36884 Wana Corporate	`10.11ms` from Casablanca, MA
75.196.49.240	AS6167 Verizon Business	`12.28ms` from Chicago, US
24.1.1.64	AS7922 Comcast Cable Communications, LLC	`1.84ms` from Chicago, US
175.110.184.176	AS25019 Saudi Telecom Company JSC	`2.93ms` from Jeddah, SA
109.150.47.64	AS2856 British Telecommunications PLC	`1.86ms` from London, GB
174.58.204.144	AS7922 Comcast Cable Communications, LLC	`10.78ms` from Miami, US
80.117.133.0	AS3269 Telecom Italia S.p.A.	`3.61ms` from Milan, IT
173.31.191.160	AS30036 Mediacom Communications Corp	`12.64ms` from Minneapolis, US
82.209.196.128	AS6697 Republican Unitary Telecommunication Enterprise Beltelecom	`0.85ms` from Minsk, BY
20.63.218.144	AS8075 Microsoft Corporation	`0.13ms` from Osaka, JP
88.190.125.192	AS12322 Free SAS	`2.11ms` from Paris, FR
114.29.62.0	AS38669 LG HelloVision Corp.	`3.15ms` from Seoul, KR
118.36.149.112	AS4766 Korea Telecom	`1.16ms` from Seoul, KR
13.246.247.144	AS16509 Amazon.com, Inc.	`0.09ms` from Cape Town, ZA
98.179.198.240	AS22773 Cox Communications Inc.	`17.55ms` from Dallas, US
187.123.73.32	AS28573 Claro NXT Telecomunicacoes Ltda	`13.52ms` from Fortaleza, BR
54.93.213.0	AS16509 Amazon.com, Inc.	`0.17ms` from Frankfurt am Main, DE
222.106.157.80	AS4766 Korea Telecom	`1.59ms` from Seoul, KR
175.236.116.48	AS4766 Korea Telecom	`2.39ms` from Seoul, KR
123.155.247.160	AS4837 CHINA UNICOM China169 Backbone	`4.04ms` from Shanghai, CN
102.25.135.48	AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)	`13.35ms` from Tunis, TN
92.66.194.128	AS1136 KPN B.V.	`0.52ms` from Amsterdam, NL

Traceroute

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

traceroute -a -n -q1 -f5 -m16 101.103.4.243

traceroute to 101.103.4.243 (101.103.4.243): 16 hops max, 52 byte packets

5 [AS6762] 195.22.206.148 167.533 ms

6 *

7 [AS4637] 202.84.251.61 162.224 ms

8 *

9 [AS1221] 203.50.13.89 295.709 ms

10 *

11 *

12 *

13 [AS1221] 101.103.0.3 295.669 ms

14 *

15 *

16 *

Measurement taken from

IPinfo ProbeNet in Kettering, GB

On December 14th 2025

What are IP address ranges?

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