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

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 2026-01-26
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2026-01-26T01:19:20Z
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 2026-01-26
abuse-mailbox:  abuse@telstra.net
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-26T01:19:29Z
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:          203.27.128.0/18
origin:         AS1221
descr:          Telstra Corporation 242 Exhibition Street
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2019-12-11T21:09:02Z
source:         APNIC

route:          203.27.128.0/18
origin:         AS19905
descr:          Telstra Corporation Limited 242 Exhibition Street
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2022-09-12T02:26:05Z
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	premiercranes.com.au	4
203.27.179.82	myfuel.com.au	3
203.27.179.118	containeryard.com.au	3
203.27.180.198	theacegroup.com.au	3
203.27.176.10	ljhstafford.com.au	1
203.27.140.229	seqformwork.com.au	1
203.27.144.139	alexmehl.com.au	1
203.27.178.246	murujugact.com.au	1
203.27.182.134	srmc.net.au	1
203.27.183.154	paxaus.com.au	1
203.27.177.78	daleys.com.au	1
203.27.179.10	gasair.com.au	1
203.27.183.146	skytrax.com.au	1
203.27.138.61	greenmtf.com.au	1
203.27.141.77	gpsids.com	1
203.27.145.87	montocoal.com.au	1
203.27.185.54	hfs.training	1
203.27.181.130	freechoice.net.au	1
203.27.145.84	braziermotti.com	1
203.27.189.70	zoomphone.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

1,299 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.27.186.109	AS1221 Telstra Limited	`0.68ms` from Sydney, AU
203.27.182.53	AS1221 Telstra Limited	`0.61ms` from Sydney, AU
203.27.191.113	AS1221 Telstra Limited	`0.56ms` from Sydney, AU
203.27.188.118	AS1221 Telstra Limited	`0.29ms` from Sydney, AU
203.27.189.177	AS1221 Telstra Limited	`0.64ms` from Sydney, AU
203.27.180.29	AS1221 Telstra Limited	`0.64ms` from Sydney, AU
203.27.178.53	AS1221 Telstra Limited	`0.60ms` from Sydney, AU
203.27.181.250	AS1221 Telstra Limited	`0.42ms` from Sydney, AU
203.27.184.25	AS1221 Telstra Limited	`0.63ms` from Sydney, AU
203.27.185.205	AS1221 Telstra Limited	`0.58ms` from Sydney, AU
203.27.190.57	AS1221 Telstra Limited	`0.61ms` from Sydney, AU
203.27.179.117	AS1221 Telstra Limited	`0.61ms` from Sydney, AU
203.27.177.105	AS1221 Telstra Limited	`0.64ms` from Sydney, AU
203.27.176.173	AS1221 Telstra Limited	`0.55ms` from Sydney, AU
203.27.183.133	AS1221 Telstra Limited	`0.51ms` from Sydney, AU
203.27.187.157	AS1221 Telstra Limited	`0.60ms` from Sydney, AU
203.27.145.133	AS1221 Telstra Limited	`2.89ms` 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
128.92.172.114	AS20115 Charter Communications LLC	`1.60ms` from Atlanta, US
213.30.211.2	AS8881 1&1 Versatel GmbH	`1.65ms` from Berlin, DE
190.110.184.2	AS52372 COOPERATIVA ELECTRICA DE GENERAL DEHEZA LTDA.	`10.50ms` from Buenos Aires, AR
173.209.202.2	AS25934 Syniverse Technologies, LLC	`0.79ms` from Chicago, US
12.54.45.50	AS7018 AT&T Enterprises, LLC	`5.97ms` from Columbus, US
117.219.1.194	AS9829 National Internet Backbone	`9.32ms` from Delhi, IN
34.247.173.82	AS16509 Amazon.com, Inc.	`0.27ms` from Dublin, IE
64.62.164.66	AS6939 Hurricane Electric LLC	`0.29ms` from Fremont, US
42.243.190.146	AS4134 CHINANET-BACKBONE	`3.72ms` from Kunming, CN
86.130.143.242	AS2856 British Telecommunications PLC	`5.10ms` from London, GB
82.31.53.210	AS5089 Virgin Media Limited	`13.66ms` from London, GB
139.218.106.98	AS9443 Vocus Retail	`1.22ms` from Melbourne, AU
93.232.84.162	AS3320 Deutsche Telekom AG	`2.27ms` from Nuernberg, DE
158.36.30.2	AS224 SIKT - KUNNSKAPSSEKTORENS TJENESTELEVERANDOR	`2.78ms` from Oslo, NO
193.149.115.114	AS5436 Computacenter France SAS	`1.04ms` from Paris, FR
122.174.208.242	AS24560 Bharti Airtel Ltd., Telemedia Services	`10.65ms` from Saint Thomas Mount, IN
64.59.151.2	AS6327 Shaw Communications	`3.99ms` from Seattle, US
115.125.59.162	AS17506 ARTERIA Networks Corporation	`1.30ms` from Tokyo, JP
44.242.116.194	AS16509 Amazon.com, Inc.	`0.13ms` from Boardman, US
217.145.33.66	AS20650 IP NEXIA N.V.	`1.73ms` from Brussels, BE
221.9.127.34	AS4837 CHINA UNICOM China169 Backbone	`2.34ms` from Changchun, CN
77.184.128.82	AS6805 Telefonica Germany GmbH & Co.OHG	`2.57ms` from Frankfurt am Main, DE
1.254.249.2	AS9318 SK Broadband Co Ltd	`7.04ms` from Incheon, KR
92.37.189.18	AS12389 PJSC Rostelecom	`1.27ms` from Khabarovsk, RU
95.129.107.50	AS20860 IOMART CLOUD SERVICES LIMITED	`1.40ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f5 203.27.183.65

traceroute to 203.27.183.65 (203.27.183.65): 64 hops max, 52 byte packets

5 [AS1221] 203.27.183.65 0.852 ms

Measurement taken from

IPinfo ProbeNet in Melbourne, AU

On February 16th 2026

What are IP address ranges?

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