123.51.52.0/24

AS38333 · Symbio Networks

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Summary

Country	Australia
Domain	telcoinabox.com.au
ASN	AS38333
Parent Range	123.51.0.0/17
Registry	APNIC
ID	INABOX-AU

WHOIS Details

inetnum:        123.51.0.0 - 123.51.127.255
netname:        INABOX-AU
descr:          Telcoinabox Operations Pty Ltd
descr:          L10, 9 Hunter Street, Sydney NSW 2000
country:        AU
org:            ORG-TOPL1-AP
admin-c:        TOPL2-AP
tech-c:         TOPL2-AP
abuse-c:        AI731-AP
status:         ALLOCATED 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-lower:      MAINT-INABOX-AU
mnt-routes:     MAINT-INABOX-AU
mnt-irt:        IRT-INABOX-AU
last-modified:  2020-11-25T13:04:09Z
source:         APNIC

irt:            IRT-INABOX-AU
address:        L3, 580 George Street, Sydney NSW 2000
e-mail:         abuse@symbionetworks.com
abuse-mailbox:  abuse@symbionetworks.com
admin-c:        TOPL2-AP
tech-c:         TOPL2-AP
auth:           # Filtered
remarks:        abuse@symbionetworks.com was validated on 2025-12-01
mnt-by:         MAINT-INABOX-AU
last-modified:  2025-12-01T04:18:34Z
source:         APNIC

organisation:   ORG-TOPL1-AP
org-name:       Telcoinabox Operations Pty Ltd
org-type:       LIR
country:        AU
address:        L3, 580 George St
phone:          +61-2-82756871
e-mail:         sysadmin@telcoinabox.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2024-12-20T12:58:47Z
source:         APNIC

role:           ABUSE INABOXAU
country:        ZZ
address:        L3, 580 George Street, Sydney NSW 2000
phone:          +000000000
e-mail:         abuse@symbionetworks.com
admin-c:        TOPL2-AP
tech-c:         TOPL2-AP
nic-hdl:        AI731-AP
remarks:        Generated from irt object IRT-INABOX-AU
remarks:        abuse@symbionetworks.com was validated on 2025-12-01
abuse-mailbox:  abuse@symbionetworks.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-12-01T04:18:46Z
source:         APNIC

role:           Telcoinabox Operations Pty Ltd administrator
address:        L4, 580 George Street, Sydney NSW 2000
country:        AU
phone:          +61-2-82489034
fax-no:         +61-2-82489034
e-mail:         networkservices@telcoinabox.com
admin-c:        TOPL2-AP
tech-c:         TOPL2-AP
nic-hdl:        TOPL2-AP
mnt-by:         MAINT-INABOX-AU
last-modified:  2019-05-31T05:16:03Z
source:         APNIC

route:          123.51.0.0/17
origin:         AS38333
descr:          Telcoinabox Operations Pty Ltd L4, 580 George St
mnt-by:         MAINT-INABOX-AU
last-modified:  2021-10-18T23:00:22Z
source:         APNIC

route:          123.51.0.0/17
origin:         AS45510
descr:          Telcoinabox Operations Pty Ltd L4, 580 George St
mnt-by:         MAINT-INABOX-AU
last-modified:  2022-02-11T06:16:23Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 123.51.52.0/24

Range	ASN	Company	Num of IPs
123.51.0.0/17	AS38333	Telcoinabox Operations Pty Ltd	32,768

Nearby Ranges

BGP prefixes that overlap with 123.51.0.0/16

Range	ASN	Company	Num of IPs
123.51.128.0/17	AS4780	New Century InfoComm Tech. Co., Ltd.	32,768
123.51.128.0/17	AS9919	New Century InfoComm Tech. Co., Ltd.	32,768
123.51.0.0/17	AS38333	Telcoinabox Operations Pty Ltd	32,768
123.51.168.0/22	AS4780	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.172.0/22	AS4780	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.220.0/22	AS4780	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.220.0/22	AS9919	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.132.0/22	AS4780	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.160.0/22	AS4780	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.128.0/22	AS9919	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.132.0/22	AS9919	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.160.0/22	AS9919	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.164.0/22	AS9919	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.168.0/22	AS9919	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.172.0/22	AS9919	New Century InfoComm Tech. Co., Ltd.	1,024
123.51.0.0/24	AS38333	Level 6, 9-13 Young Street	256
123.51.188.0/24	AS9919	New Century InfoComm Tech. Co., Ltd.	256
123.51.193.0/24	AS9919	New Century InfoComm Tech. Co., Ltd.	256
123.51.194.0/24	AS9919	New Century InfoComm Tech. Co., Ltd.	256
123.51.195.0/24	AS9919	New Century InfoComm Tech. Co., Ltd.	256
123.51.181.0/24	AS4780	New Century InfoComm Tech. Co., Ltd.	256
123.51.196.0/24	AS9919	New Century InfoComm Tech. Co., Ltd.	256
123.51.197.0/24	AS9919	New Century InfoComm Tech. Co., Ltd.	256
123.51.198.0/24	AS9919	New Century InfoComm Tech. Co., Ltd.	256
123.51.199.0/24	AS9919	New Century InfoComm Tech. Co., Ltd.	256
123.51.208.0/24	AS9919	New Century InfoComm Tech. Co., Ltd.	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

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

IP Address	ASN	Details
123.51.52.116	AS38333 Symbio Networks	`1.38ms` 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
188.207.41.184	AS1136 KPN B.V.	`1.80ms` from Amsterdam, NL
87.123.173.232	AS8881 1&1 Versatel GmbH	`5.77ms` from Duesseldorf, DE
216.218.225.136	AS6939 Hurricane Electric LLC	`0.23ms` from Fremont, US
81.111.55.168	AS5089 Virgin Media Limited	`6.24ms` from London, GB
107.216.216.56	AS7018 AT&T Enterprises, LLC	`18.13ms` from Los Angeles, US
151.189.145.200	AS3209 Vodafone GmbH	`5.32ms` from Munich, DE
189.190.185.216	AS8151 UNINET	`6.29ms` from Santiago de Queretaro, MX
108.172.241.24	AS852 TELUS Communications Inc.	`3.80ms` from Seattle, US
78.61.205.216	AS8764 Telia Lietuva, AB	`2.95ms` from Siauliai, LT
217.153.118.152	AS12912 T-Mobile Polska S.A.	`0.86ms` from Warsaw, PL
51.38.136.40	AS16276 OVH SAS	`0.16ms` from Warsaw, PL
91.239.247.248	AS51394 Akasha.net Sp. z o.o.	`3.82ms` from Warsaw, PL
94.177.176.8	AS31034 Aruba S.p.A.	`0.36ms` from Arezzo, IT
48.217.138.232	AS8075 Microsoft Corporation	`0.89ms` from Ashburn, US
91.230.247.72	AS1241 Forthnet	`0.54ms` from Athens, GR
15.240.63.232	AS16509 Amazon.com, Inc.	`0.10ms` from Cape Town, ZA
51.187.195.72	AS5607 Sky UK Limited	`1.21ms` from Dublin, IE
51.195.100.104	AS16276 OVH SAS	`0.12ms` from Frankfurt am Main, DE
78.150.195.72	AS13285 TalkTalk Communications Limited	`1.07ms` from Manchester, GB
104.9.89.168	AS7018 AT&T Enterprises, LLC	`6.61ms` from Miami, US
81.21.48.200	AS39228 iNet	`2.16ms` from Riyadh, SA
189.95.130.216	AS22085 Claro S/A	`18.55ms` from Sao Paulo, BR
18.136.197.24	AS16509 Amazon.com, Inc.	`0.12ms` from Singapore, SG
60.17.102.56	AS4837 CHINA UNICOM China169 Backbone	`2.64ms` from Tieling, CN
114.159.1.136	AS4713 NTT DOCOMO BUSINESS,Inc.	`14.99ms` 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 -f6 123.51.52.182

traceroute to 123.51.52.182 (123.51.52.182): 64 hops max, 52 byte packets

6 [AS38333] 123.51.52.182 2.498 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On March 20th 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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