123.51.50.0/23

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 123.51.50.0/23

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
207.174.61.135	AS16509 Amazon.com, Inc.	`0.03ms` from Bangkok, TH
135.224.189.119	AS8075 Microsoft Corporation	`0.29ms` from Boydton, US
72.52.255.23	AS32244 Liquid Web, L.L.C	`0.24ms` from Lansing, US
142.115.239.231	AS577 Bell Canada	`4.68ms` from Montreal, CA
111.169.102.55	AS2518 BIGLOBE Inc.	`2.38ms` from Osaka, JP
153.179.108.87	AS4713 NTT DOCOMO BUSINESS,Inc.	`10.45ms` from Osaka, JP
153.219.102.183	AS4713 NTT DOCOMO BUSINESS,Inc.	`5.11ms` from Osaka, JP
5.89.54.119	AS30722 Fastweb SpA	`6.26ms` from Rome, IT
97.125.237.103	AS209 CenturyLink Communications, LLC	`11.39ms` from St. Louis, US
115.163.2.7	AS2527 Sony Network Communications Inc.	`2.27ms` from Tokyo, JP
133.130.52.7	AS7506 GMO Internet Group, Inc.	`0.37ms` from Tokyo, JP
46.241.143.7	AS44395 Ucom CJSC	`18.10ms` from Yerevan, AM
51.8.1.167	AS8075 Microsoft Corporation	`0.59ms` from Ashburn, US
174.77.198.183	AS22773 Cox Communications Inc.	`0.27ms` from Atlanta, US
46.137.87.87	AS16509 Amazon.com, Inc.	`0.22ms` from Dublin, IE
18.158.149.7	AS16509 Amazon.com, Inc.	`0.13ms` from Frankfurt am Main, DE
95.223.244.215	AS3209 Vodafone GmbH	`6.24ms` from Frankfurt am Main, DE
95.72.228.247	AS12389 PJSC Rostelecom	`1.76ms` from Moscow, RU
103.199.186.199	AS47583 Hostinger International Limited	`0.42ms` from Sao Paulo, BR
209.181.88.39	AS209 CenturyLink Communications, LLC	`2.33ms` from Seattle, US
40.162.106.119	AS58593 Shanghai Blue Cloud Technology Co.,Ltd	`6.00ms` from Shanghai, CN
149.104.46.23	AS140224 Nebula Global LLC	`0.62ms` from Singapore, SG
64.29.118.151	AS5758 ALPHA ENTERPRISES LIMITED, INC.	`14.52ms` from Chicago, US
34.133.82.103	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
222.254.18.23	AS45899 VNPT Corp	`1.20ms` from Hanoi, VN

Traceroute

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

traceroute -a -n -q1 -f3 -m7 123.51.51.182

traceroute to 123.51.51.182 (123.51.51.182): 7 hops max, 52 byte packets

3 [] 51.162.224.168 0.342 ms

4 [AS577] 67.69.37.77 0.406 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Winnipeg, CA

On April 24th 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.

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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