203.27.128.0/18

AS1221 · Telstra Limited

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Summary

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

WHOIS Details

inetnum:        203.27.128.0 - 203.27.191.255
netname:        TELSTRAINTERNET-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:        ------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AU-TIAR-AP
mnt-routes:     MAINT-AU-TIAR-AP
mnt-irt:        IRT-TELSTRA-AU
last-modified:  2024-05-10T00:50:23Z
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


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

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

role:           Telstra AU NOC
address:        Telstra Internet
address:        242 Exhibition Street
address:        Melbourne
address:        VIC 3000
country:        AU
phone:          +61 3 8632 0516
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:  2022-06-08T09:03:20Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.27.0.0/16

Range	ASN	Company	Num of IPs
203.27.238.0/23	AS135399	Blackmores Ltd	512
203.27.104.0/23	AS58734	Brisbane Convention and Exhibition Centre	512
203.27.106.0/23	AS137409	GSL Networks Pty LTD	512
203.27.42.0/23	AS136154	Rockhampton City Council	512
203.27.72.0/24	AS1221	Glencore Australia Holdings Pty Ltd	256
203.27.118.0/24	AS132847	Network Solutions Group Pty Ltd	256
203.27.92.0/24	AS133758	Knowledge by Design Pty Ltd	256
203.27.96.0/24	AS135409	Kacific Broadband Satellites Pte ltd	256
203.27.97.0/24	AS135409	Kacific Broadband Satellites Pte ltd	256
203.27.11.0/24	AS135893	CAVAL Limited	256
203.27.77.0/24	AS136518	Department of Commerce (WA)	256
203.27.18.0/24	AS137267	CBROS Technologies Limited	256
203.27.106.0/24	AS137409	GSL Networks Pty LTD - Singapore	256
203.27.107.0/24	AS137409	GSL Networks Pty LTD - Singapore	256
203.27.126.0/24	AS151499	Australian Public Access Network Association	256
203.27.34.0/24	AS154248	PT Telemedia Cakra Nusantara	256
203.27.201.0/24	AS16276	Server Pro Sweden AB	256
203.27.235.0/24	AS17436	ICICIBank Ltd, India	256
203.27.231.0/24	AS17551	Anycast Holdings Pty Ltd	256
203.27.98.0/24	AS17807	Queensland Art Gallery	256
203.27.44.0/24	AS23727	Managed Solutions Internet	256
203.27.199.0/24	AS23854	NINE ENTERTAINMENT CO. PTY LTD	256
203.27.78.0/24	AS23871	WarpSpeed Computers Pty. Ltd.	256
203.27.30.0/24	AS2764	Ashurst Australia Services Pty Limited	256
203.27.58.0/24	AS29222	E-DOOR SARL	256
203.27.21.0/24	AS38084	Ethan Group Pty Ltd	256
203.27.116.0/24	AS38195	SUPERLOOP (AUSTRALIA) PTY LTD	256
203.27.62.0/24	AS38572	Mater Misericordiae Limited	256
203.27.60.0/24	AS45780	Vigen Pty Ltd	256
203.27.225.0/24	AS4739	DEPARTMENT FOR EDUCATION	256
203.27.101.0/24	AS4764	G. P. STERN PTY LTD	256
203.27.5.0/24	AS4826	City Of Perth	256
203.27.52.0/24	AS4826	City of Salisbury	256
203.27.127.0/24	AS55467	Ice media Pty. Ltd.	256
203.27.87.0/24	AS56113	Challenger Group Services Ltd	256
203.27.197.0/24	AS7545	iiNet Limited	256
203.27.198.0/24	AS7545	iiNet Limited	256
203.27.63.0/24	AS7575	Ivanhoe Grammer School	256
203.27.47.0/24	AS7637	State Library of Victoria	256
203.27.19.0/24	AS800	WorldVu Australia Pty Ltd.	256
203.27.70.0/24	AS9009	Formosa Sydney Pty Limited	256
203.27.223.0/24	AS10143	C3 Church Sydney Ltd	256
203.27.67.0/24	AS9627	TCR Holdings Limted.	256
203.27.253.0/24	AS10753	Kellogg (AUST) Pty Ltd.	256
203.27.193.0/24	AS1221	Victoria State Emergency Service Authority	256
203.27.56.0/24	AS1221	RPMGLOBAL HOLDINGS LIMITED	256
203.27.69.0/24	AS1221	Telstra Limited	256

Hosted domains

There are 29 domain names hosted across 20 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.27.182.150	teamlifting.au	4
203.27.179.82	myfuel.au	3
203.27.179.118	containeryard.com.au	3
203.27.180.198	aceceramics.com	3
203.27.183.146	skytrax.com.au	1
203.27.182.134	srmc.net.au	1
203.27.140.229	seqformwork.com.au	1
203.27.179.10	gasair.com.au	1
203.27.138.61	greenmtf.com.au	1
203.27.145.84	braziermotti.com	1
203.27.144.139	alexmehl.com.au	1
203.27.141.77	gpsids.com	1
203.27.177.78	daleys.com.au	1
203.27.183.154	paxaus.com.au	1
203.27.185.54	hfs.training	1
203.27.176.10	ljhstafford.com.au	1
203.27.189.70	zoomphone.au	1
203.27.178.246	murujugact.com.au	1
203.27.181.130	freechoice.net.au	1
203.27.145.87	montocoal.com.au	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

1,291 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.27.187.157	AS1221 Telstra Limited	`0.59ms` from Sydney, AU
203.27.145.133	AS1221 Telstra Limited	`2.39ms` from Sydney, AU
203.27.182.237	AS1221 Telstra Limited	`0.66ms` from Sydney, AU
203.27.176.65	AS1221 Telstra Limited	`0.67ms` from Sydney, AU
203.27.184.165	AS1221 Telstra Limited	`0.67ms` from Sydney, AU
203.27.186.29	AS1221 Telstra Limited	`0.58ms` from Sydney, AU
203.27.177.105	AS1221 Telstra Limited	`0.65ms` from Sydney, AU
203.27.178.141	AS1221 Telstra Limited	`0.63ms` from Sydney, AU
203.27.181.250	AS1221 Telstra Limited	`0.45ms` from Sydney, AU
203.27.179.117	AS1221 Telstra Limited	`0.65ms` from Sydney, AU
203.27.180.29	AS1221 Telstra Limited	`0.69ms` from Sydney, AU
203.27.183.149	AS1221 Telstra Limited	`0.65ms` from Sydney, AU
203.27.185.218	AS1221 Telstra Limited	`0.57ms` from Sydney, AU
203.27.188.118	AS1221 Telstra Limited	`0.28ms` from Sydney, AU
203.27.190.113	AS1221 Telstra Limited	`0.66ms` from Sydney, AU
203.27.189.181	AS1221 Telstra Limited	`0.66ms` from Sydney, AU
203.27.191.217	AS1221 Telstra Limited	`0.65ms` 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
86.87.58.50	AS1136 KPN B.V.	`1.57ms` from Amsterdam, NL
62.207.14.178	AS1136 KPN B.V.	`2.49ms` from Amsterdam, NL
92.65.13.66	AS1136 KPN B.V.	`0.42ms` from Amsterdam, NL
196.120.33.2	AS36925 MEDITELECOM	`4.05ms` from Casablanca, MA
50.110.28.178	AS5650 Frontier Communications of America, Inc.	`12.51ms` from Chicago, US
96.216.150.194	AS7922 Comcast Cable Communications, LLC	`0.65ms` from Chicago, US
193.104.112.2	AS51368 Exertis CapTech Aktiebolag	`0.78ms` from Goeteborg, SE
5.196.62.98	AS16276 OVH SAS	`0.10ms` from Gravelines, FR
27.70.96.178	AS7552 Viettel Group	`1.80ms` from Hanoi, VN
222.168.137.34	AS4134 CHINANET-BACKBONE	`13.29ms` from Liaoyang, CN
194.72.150.210	AS2856 British Telecommunications PLC	`2.13ms` from London, GB
146.200.24.226	AS6871 Plusnet	`5.99ms` from London, GB
24.120.37.130	AS22773 Cox Communications Inc.	`6.01ms` from Los Angeles, US
105.168.75.178	AS37119 UNITEL SA	`0.83ms` from Luanda, AO
5.36.163.2	AS28885 OmanTel NAP	`2.74ms` from Muscat, OM
112.85.188.226	AS4837 CHINA UNICOM China169 Backbone	`6.89ms` from Nanjing, CN
128.22.162.194	AS17511 OPTAGE Inc.	`1.33ms` from Osaka, JP
34.32.96.34	AS396982 Google LLC	`8.72ms` from Oudeschip, NL
77.104.217.178	AS39906 CoProSys a.s.	`0.32ms` from Prague, CZ
23.119.165.114	AS7018 AT&T Enterprises, LLC	`7.10ms` from San Jose, US
115.89.252.50	AS3786 LG DACOM Corporation	`1.34ms` from Seoul, KR
183.238.113.82	AS9808 China Mobile Communications Group Co., Ltd.	`4.76ms` from Shenzhen, CN
115.171.80.130	AS4847 China Networks Inter-Exchange	`4.33ms` from Tianjin, CN
210.175.11.130	AS4725 SoftBank Corp.	`1.25ms` from Tokyo, JP
99.225.66.226	AS812 Rogers Communications Canada Inc.	`3.30ms` from Toronto, CA

Traceroute

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

traceroute -a -n -q1 -m7 203.27.158.104

traceroute to 203.27.158.104 (203.27.158.104): 7 hops max, 52 byte packets

1 [AS15169] 142.251.228.106 144.494 ms

2 [AS15169] 192.178.97.140 144.314 ms

3 [AS1221] 58.163.91.193 143.693 ms

4 [AS1221] 203.50.11.176 145.609 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Las Vegas, US

On November 22nd 2025

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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