203.30.140.0/24

AS4647 · Centra Networks

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Summary

Country	Australia
Domain	centra.com.au
ASN	AS4647
Registry	APNIC
ID	CENTRANETWORKS-AU

WHOIS Details

inetnum:        203.30.140.0 - 203.30.140.255
netname:        CENTRANETWORKS-AU
descr:          Centra Networks
country:        AU
org:            ORG-CN1-AP
admin-c:        CNNA2-AP
tech-c:         CNNA2-AP
abuse-c:        AC2056-AP
status:         ASSIGNED PORTABLE
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-routes:     MAINT-CENTRANETWORKS-AU
mnt-irt:        IRT-CENTRANETWORKS-AU
last-modified:  2024-04-17T03:41:25Z
source:         APNIC

irt:            IRT-CENTRANETWORKS-AU
address:        1/200 Barry Pde Fortitude Valley QLD 4006
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CNNA2-AP
tech-c:         CNNA2-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2025-06-17
remarks:        [email protected] was validated on 2025-11-12
mnt-by:         MAINT-CENTRANETWORKS-AU
last-modified:  2025-11-18T00:27:08Z
source:         APNIC

organisation:   ORG-CN1-AP
org-name:       Centra Networks
org-type:       LIR
country:        AU
address:        1/200 Barry Parade
phone:          +61-7-36202100
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:51Z
source:         APNIC

role:           ABUSE CENTRANETWORKSAU
country:        ZZ
address:        1/200 Barry Pde Fortitude Valley QLD 4006
phone:          +000000000
e-mail:         [email protected]
admin-c:        CNNA2-AP
tech-c:         CNNA2-AP
nic-hdl:        AC2056-AP
remarks:        Generated from irt object IRT-CENTRANETWORKS-AU
remarks:        [email protected] was validated on 2025-06-17
remarks:        [email protected] was validated on 2025-11-12
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-11-12T06:31:52Z
source:         APNIC

role:           CENTRA NETWORKS - Network Administrator
address:        1/200 Barry Pde, Fortitude Valley QLD 4006
country:        AU
phone:          +61 7 3620 2100
e-mail:         [email protected]
admin-c:        CNNA2-AP
tech-c:         CNNA2-AP
nic-hdl:        CNNA2-AP
mnt-by:         MAINT-CENTRANETWORKS-AU
last-modified:  2019-01-07T00:56:10Z
source:         APNIC

route:          203.30.140.0/24
origin:         AS4647
descr:          Centra Networks 1/200 Barry Parade
mnt-by:         MAINT-CENTRANETWORKS-AU
last-modified:  2024-08-20T21:12:34Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.30.0.0/16

Range	ASN	Company	Num of IPs
203.30.0.0/20	AS136994	Southern Phone Company Ltd	4,096
203.30.188.0/22	AS209242	UMPIRE ASSOCIATES LTD	1,024
203.30.104.0/22	AS12975	Palestine Telecommunications Company (PALTEL)	1,024
203.30.92.0/22	AS1221	KPMG	1,024
203.30.100.0/22	AS24316	QLD 4014	1,024
203.30.44.0/22	AS24541	HostAway Pty Ltd	1,024
203.30.90.0/23	AS38170	WORLEY Australia Inc	512
203.30.236.0/23	AS55666	PT Media Sarana Data	512
203.30.98.0/23	AS18111	Bytecard PTY LTD	512
203.30.184.0/23	AS7545	Megacom Network Solutions Pty Ltd	512
203.30.164.0/23	AS17766	Nexon Asia Pacific Pty Ltd	512
203.30.224.0/23	AS25697	Mailreef	512
203.30.206.0/23	AS4739	iiNet Limited	512
203.30.79.0/24	AS23863	GKY Distributors Pty Limited	256
203.30.252.0/24	AS24446	5G NETWORK OPERATIONS PTY LTD	256
203.30.213.0/24	AS38195	Allen Bolderoff	256
203.30.127.0/24	AS45192	APNIC TRAINING LAB	256
203.30.33.0/24	AS45481	NBCS Pty Ltd	256
203.30.216.0/24	AS45780	MLC School	256
203.30.24.0/24	AS4764	Adhoc Software	256
203.30.236.0/24	AS55666	PT Media Sarana Data	256
203.30.237.0/24	AS55666	PT Media Sarana Data	256
203.30.197.0/24	AS63850	Justin Fanning	256
203.30.155.0/24	AS7545	Navada Computer Services Pty Ltd	256
203.30.157.0/24	AS7545	FAIRFIELD CITY LIBRARY	256
203.30.193.0/24	AS7545	Shoalhaven City Council	256
203.30.210.0/24	AS7545	City of Greater Dandenong	256
203.30.60.0/24	AS7546	Dreamtilt	256
203.30.205.0/24	AS7575	Santa Sabina College Ltd	256
203.30.138.0/24	AS7585	Greenhat Services Pty Ltd	256
203.30.19.0/24	AS7604	Zettagrid Pty Ltd	256
203.30.34.0/24	AS7604	Zettagrid Pty Ltd	256
203.30.97.0/24	AS7637	State Library of Victoria	256
203.30.56.0/24	AS7703	Westway Nominees Pty Ltd t/a Bekkers	256
203.30.78.0/24	AS9266	Fiveways International Limited	256
203.30.88.0/24	AS9268	Project Eclectic RandD SA Pty Ltd	256
203.30.35.0/24	AS10143	BelSoft Pty Ltd	256
203.30.137.0/24	AS9313	Network Technology (AUST) P/L	256
203.30.201.0/24	AS1221	Altronic Distributors Pty Ltd	256
203.30.64.0/24	AS1221	Peter John Biedak	256
203.30.75.0/24	AS150688	David Tat Yuen Goh	256
203.30.221.0/24	AS154218	PT LINTAS JARINGAN TUNGKAL	256
203.30.136.0/24	AS15830	Unisys Australia Limited	256
203.30.65.0/24	AS17473	Blue Apache Pty Ltd	256
203.30.68.0/24	AS17551	Anycast Holdings Pty Ltd	256
203.30.131.0/24	AS17559	HAVAS AUSTRALIA PTY LTD.	256
203.30.199.0/24	AS17766	Nexon Asia Pacific Pty Ltd	256
203.30.143.0/24	AS18986	Calligo (Canada) Inc.	256
203.30.211.0/24	AS18986	Calligo (Canada) Inc.	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
203.30.140.11	AS4647 Centra Networks	`0.58ms` from Brisbane, 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
113.3.253.8	AS4837 CHINA UNICOM China169 Backbone	`10.79ms` from Harbin, CN
211.25.61.200	AS9930 TTNET-MY	`0.86ms` from Kuala Lumpur, MY
109.158.177.248	AS2856 British Telecommunications PLC	`4.03ms` from London, GB
34.54.244.40	AS396982 Google LLC	`0.08ms` from Melbourne, AU
169.40.140.8	AS205896 TODD COMMUNICATION CONSULTANCY LTD	`0.72ms` from Miami, US
81.57.65.104	AS29447 SCALEWAY S.A.S.	`2.10ms` from Milan, IT
185.231.168.8	AS60456 REVTELECOM GROUP SAS	`0.17ms` from Paris, FR
179.217.93.8	AS28573 Claro NXT Telecomunicacoes Ltda	`6.72ms` from Sao Paulo, BR
68.145.169.120	AS6327 Shaw Communications	`11.48ms` from Calgary, CA
128.255.44.200	AS3676 University of Iowa	`5.93ms` from Chicago, US
24.127.119.72	AS7922 Comcast Cable Communications, LLC	`6.97ms` from Flint, US
80.134.69.24	AS3320 Deutsche Telekom AG	`2.77ms` from Hamburg, DE
87.100.138.72	AS16086 DNA Oyj	`2.21ms` from Helsinki, FI
31.48.67.216	AS2856 British Telecommunications PLC	`7.10ms` from London, GB
147.148.104.88	AS2856 British Telecommunications PLC	`6.49ms` from London, GB
24.253.89.216	AS22773 Cox Communications Inc.	`6.26ms` from Los Angeles, US
51.49.146.136	AS16509 Amazon.com, Inc.	`5.60ms` from Madrid, ES
2.7.14.24	AS3215 Orange S.A.	`10.17ms` from Marseille, FR
2.62.230.248	AS12389 PJSC Rostelecom	`7.14ms` from Novosibirsk, RU
82.197.95.168	AS47583 Hostinger International Limited	`0.89ms` from Phoenix, US
92.55.228.72	AS42739 Hawe Telekom S.A. in Restructuring	`4.88ms` from Poznan, PL
99.77.141.40	AS16509 Amazon.com, Inc.	`0.29ms` from Seoul, KR
110.44.193.40	AS17577 LG HelloVision Corp.	`10.87ms` from Seoul, KR
124.165.111.152	AS4837 CHINA UNICOM China169 Backbone	`4.80ms` from Taiyuan, CN
13.113.224.72	AS16509 Amazon.com, Inc.	`0.21ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 203.30.140.254

traceroute to 203.30.140.254 (203.30.140.254): 64 hops max, 52 byte packets

1 [AS136557] 103.216.222.5 0.096 ms

2 [AS136557] 103.216.222.92 18.843 ms

3 [] 218.100.76.78 0.199 ms

4 [AS132808] 103.133.238.54 1.341 ms

5 *

6 [AS4647] 203.30.140.254 1.012 ms

Measurement taken from

IPinfo ProbeNet in Brisbane, AU

On December 14th 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.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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