123.51.54.0/23

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 123.51.54.0/23

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
123.51.160.0/22	AS4780	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.132.0/22	AS4780	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.160.0/22	AS9919	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.220.0/22	AS9919	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.164.0/22	AS9919	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.220.0/22	AS4780	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.132.0/22	AS9919	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.172.0/22	AS4780	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.168.0/22	AS9919	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.128.0/22	AS9919	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.168.0/22	AS4780	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.172.0/22	AS9919	New Centry InfoCom Tech. Co., Ltd.	1,024
123.51.188.0/24	AS9919	N/A	256
123.51.0.0/24	AS38333	Level 6, 9-13 Young Street	256
123.51.195.0/24	AS9919	New Centry InfoCom Tech. Co., Ltd.	256
123.51.199.0/24	AS9919	New Centry InfoCom Tech. Co., Ltd.	256
123.51.197.0/24	AS9919	New Centry InfoCom Tech. Co., Ltd.	256
123.51.198.0/24	AS9919	New Centry InfoCom Tech. Co., Ltd.	256
123.51.196.0/24	AS9919	New Centry InfoCom Tech. Co., Ltd.	256
123.51.194.0/24	AS9919	New Centry InfoCom Tech. Co., Ltd.	256
123.51.193.0/24	AS9919	New Centry InfoCom Tech. Co., Ltd.	256
123.51.208.0/24	AS9919	HimoreDigitalCo.,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

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

IP Address	ASN	Details
123.51.54.132	AS38333 Symbio Networks	`1.62ms` 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
111.63.250.7	AS24547 Hebei Mobile Communication Company Limited	`8.46ms` from Beijing, CN
125.67.3.71	AS4134 CHINANET BACKBONE	`12.32ms` from Chengdu, CN
173.187.156.215	AS7029 Windstream Communications LLC	`12.81ms` from Chicago, US
46.5.55.55	AS3209 Vodafone GmbH	`11.65ms` from Frankfurt am Main, DE
203.195.153.215	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.01ms` from Guangzhou, CN
39.129.71.7	AS9808 China Mobile Communications Group Co., Ltd.	`9.88ms` from Kunming, CN
77.100.173.231	AS5089 Virgin Media Limited	`7.91ms` from London, GB
50.32.217.247	AS5650 Frontier Communications of America, Inc.	`15.27ms` from New York City, US
86.63.212.135	AS16246 O2 Czech Republic, a.s.	`8.12ms` from Prague, CZ
205.209.146.71	AS23338 DCS Pacific Star, LLC	`3.89ms` from Santa Clara, US
39.28.223.231	AS4766 Korea Telecom	`6.49ms` from Seoul, KR
118.200.97.231	AS9506 Singtel Fibre Broadband	`1.46ms` from Singapore, SG
126.131.36.103	AS17676 SoftBank Corp.	`14.55ms` from Tokyo, JP
185.128.156.247	AS41421 StarNet Telecom Sp. z o.o.	`0.47ms` from Warsaw, PL
185.134.66.71	AS5405 Inter.link GmbH	`0.15ms` from Amsterdam, NL
73.197.220.71	AS7922 Comcast Cable Communications, LLC	`8.67ms` from Ashburn, US
92.116.186.87	AS8881 1&1 Versatel GmbH	`5.14ms` from Frankfurt am Main, DE
116.100.129.71	AS7552 Viettel Group	`1.45ms` from Ho Chi Minh City, VN
180.226.14.151	AS17858 LG POWERCOMM	`2.46ms` from Incheon, KR
46.64.68.103	AS5607 Sky UK Limited	`3.87ms` from London, GB
95.127.254.135	AS3352 TELEFONICA DE ESPANA S.A.U.	`18.01ms` from Madrid, ES
67.174.27.103	AS7922 Comcast Cable Communications, LLC	`14.03ms` from Miami, US
167.60.25.119	AS6057 Administracion Nacional de Telecomunicaciones	`1.75ms` from Montevideo, UY
115.211.139.231	AS4134 CHINANET BACKBONE	`8.65ms` from Nanchang, CN
18.230.2.71	AS16509 Amazon.com, Inc.	`0.19ms` from Osasco, BR

Traceroute

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

traceroute -a -n -q1 -f3 123.51.54.110

traceroute to 123.51.54.110 (123.51.54.110): 64 hops max, 52 byte packets

3 [] 45.127.172.45 0.891 ms

4 [AS38333] 123.51.54.110 4.869 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On April 24th 2026

What are IP address ranges?

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