123.51.36.0/22

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 123.51.36.0/22

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 8 domain names hosted across 7 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
123.51.38.195	edts.cloud	2
123.51.37.245	synapteca.ai	1
123.51.36.93	therock.science	1
123.51.38.49	nurturefilms.com.au	1
123.51.37.197	robrayner.com	1
123.51.37.136	mywebsitedesigns.com.au	1
123.51.36.25	radiata5.casa	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

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Pingable IPs

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

IP Address	ASN	Details
123.51.39.227	AS38333 Symbio Networks	`1.65ms` from Sydney, AU
123.51.37.239	AS38333 Symbio Networks	`1.87ms` from Sydney, AU
123.51.38.29	AS38333 Symbio Networks	`1.53ms` from Sydney, AU
123.51.36.3	AS38333 Symbio Networks	`2.01ms` 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
31.187.235.54	AS50266 Odido Netherlands B.V.	`4.31ms` from Amsterdam, NL
49.249.27.182	AS55740 TTSL-ISP DIVISION	`1.50ms` from Bengaluru, IN
44.240.207.6	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, US
69.139.202.22	AS7922 Comcast Cable Communications, LLC	`0.59ms` from Chicago, US
52.117.180.118	AS36351 IBM Cloud	`0.94ms` from Dallas, US
14.230.253.70	AS45899 VNPT Corp	`3.68ms` from Ho Chi Minh City, VN
27.65.56.134	AS7552 Viettel Group	`0.89ms` from Ho Chi Minh City, VN
50.191.81.230	AS7922 Comcast Cable Communications, LLC	`6.68ms` from Houston, US
50.73.250.214	AS7922 Comcast Cable Communications, LLC	`10.40ms` from Orlando, US
115.131.211.70	AS7545 TPG Telecom Limited	`1.20ms` from Perth, AU
1.96.197.38	AS4766 Korea Telecom	`1.79ms` from Seoul, KR
40.119.241.22	AS8075 Microsoft Corporation	`0.40ms` from Singapore, SG
180.3.170.134	AS4713 NTT DOCOMO BUSINESS,Inc.	`10.20ms` from Tokyo, JP
4.204.159.230	AS8075 Microsoft Corporation	`0.16ms` from Toronto, CA
47.14.87.214	AS20115 Charter Communications LLC	`12.10ms` from Ashburn, US
96.73.243.70	AS7922 Comcast Cable Communications, LLC	`5.12ms` from Atlanta, US
167.114.167.214	AS16276 OVH SAS	`0.07ms` from Beauharnois, CA
87.79.54.182	AS8422 NetCologne Gesellschaft fur Telekommunikation mbH	`5.56ms` from Duesseldorf, DE
187.226.150.214	AS8151 UNINET	`4.29ms` from Mexico City, MX
112.181.34.230	AS4766 Korea Telecom	`5.52ms` from Seoul, KR
101.35.103.198	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.04ms` from Shanghai, CN
46.11.180.230	AS15735 GO p.l.c.	`1.31ms` from Swieqi, MT
65.49.229.214	AS25820 IT7 Networks Inc	`0.44ms` from Vancouver, CA
76.78.191.22	AS54607 Apogee Telecom Inc.	`1.02ms` from Dallas, US
108.70.48.6	AS7018 AT&T Enterprises, LLC	`2.38ms` from Houston, 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 123.51.38.62

traceroute to 123.51.38.62 (123.51.38.62): 64 hops max, 52 byte packets

6 [AS38333] 123.51.38.62 10.369 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On March 13th 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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