123.51.74.0/23

AS38333 · Symbio Networks

Need more data or want to access it via API or data downloads? Sign up to get free access

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 123.51.74.0/23

Range	ASN	Company	Num of IPs
123.51.0.0/17	AS38333	Telcoinabox Operations Pty Ltd	32,768
123.51.0.0/17	AS45510	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
123.51.0.0/17	AS38333	Telcoinabox Operations Pty Ltd	32,768
123.51.128.0/17	AS9919	New Century InfoComm Tech. Co., Ltd.	32,768
123.51.0.0/17	AS45510	Telcoinabox Operations Pty Ltd	32,768
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
123.51.168.0/22	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 3 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
123.51.74.218	toroof.top	1
123.51.74.254	17parkroad.net	1
123.51.74.173	gingerrabbit.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

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

IP Address	ASN	Details
123.51.74.174	AS38333 Symbio Networks	`14.39ms` from Sydney, AU
123.51.75.73	AS38333 Symbio Networks	`14.19ms` 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
108.82.139.7	AS7018 AT&T Enterprises, LLC	`18.59ms` from Atlanta, US
20.110.139.7	AS8075 Microsoft Corporation	`0.25ms` from Boydton, US
154.182.195.135	AS8452 TE-AS	`6.42ms` from Cairo, EG
49.144.187.231	AS9299 Philippine Long Distance Telephone Company	`11.42ms` from Manila, PH
128.101.219.23	AS217 University of Minnesota	`0.60ms` from Minneapolis, US
91.102.107.151	AS29286 SKYLOGIC S.P.A.	`1.23ms` from Paris, FR
178.66.230.167	AS12389 PJSC Rostelecom	`1.51ms` from Saint Petersburg, RU
104.50.6.71	AS7018 AT&T Enterprises, LLC	`3.92ms` from Santa Clara, US
189.242.59.231	AS8151 UNINET	`5.33ms` from Santiago de Queretaro, MX
175.205.121.215	AS4766 Korea Telecom	`3.15ms` from Seoul, KR
24.217.134.71	AS20115 Charter Communications LLC	`5.19ms` from St. Louis, US
186.201.54.135	AS10429 TELEFÔNICA BRASIL S.A	`0.97ms` from São Paulo, BR
162.207.15.87	AS7018 AT&T Enterprises, LLC	`9.50ms` from Atlanta, US
117.242.97.55	AS9829 National Internet Backbone	`12.22ms` from Bengaluru, IN
54.213.195.119	AS16509 Amazon.com, Inc.	`0.20ms` from Boardman, US
177.96.117.231	AS18881 TELEFÔNICA BRASIL S.A	`1.01ms` from Curitiba, BR
168.232.204.7	AS264960 R L GUIMARAES TELECOMUNICACAO - ME	`16.57ms` from Fortaleza, BR
80.130.85.151	AS3320 Deutsche Telekom AG	`6.56ms` from Frankfurt am Main, DE
154.91.14.247	AS135097 LUOGELANG (FRANCE) LIMITED	`0.66ms` from Hong Kong, HK
138.19.147.247	AS9269 Hong Kong Broadband Network Ltd.	`1.06ms` from Hong Kong, HK
199.116.198.23	AS16717 Craw-Kan Telephone Cooperative Inc.	`2.94ms` from Kansas City, US
134.213.167.7	AS15395 Rackspace Ltd.	`1.19ms` from London, GB
73.46.107.55	AS7922 Comcast Cable Communications, LLC	`8.84ms` from Pompano Beach, US
140.249.235.7	AS136195 Qingdao, Shandong Province, P.R.China.	`1.42ms` from Qingdao, CN
52.202.216.71	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US

Traceroute

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

traceroute -a -n -q1 -f6 123.51.74.118

traceroute to 123.51.74.118 (123.51.74.118): 64 hops max, 52 byte packets

6 [AS38333] 123.51.74.118 15.319 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On February 7th 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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales