123.51.0.0/24

AS38333 · Symbio Networks

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Summary

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

WHOIS Details

inetnum:        123.51.0.0 - 123.51.0.255
netname:        TELCOINABOX-AU
descr:          Level 6, 9-13 Young Street
country:        AU
admin-c:        TPLn2-AP
tech-c:         TPLn2-AP
abuse-c:        AI731-AP
status:         ASSIGNED NON-PORTABLE
mnt-by:         MAINT-INABOX-AU
mnt-irt:        IRT-INABOX-AU
last-modified:  2021-06-16T13:03:48Z
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

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 PTY LTD - network administrator
address:        Level 10, 9 Hunter Street
country:        AU
phone:          +6182489099
e-mail:         networkservices@telcoinabox.com
admin-c:        TPLn2-AP
tech-c:         TPLn2-AP
nic-hdl:        TPLn2-AP
mnt-by:         MAINT-TELCOINABOX-AU
last-modified:  2017-06-21T06:01:19Z
source:         APNIC

route:          123.51.0.0/24
origin:         AS45510
descr:          Telcoinabox Operations Pty Ltd L4, 580 George St
mnt-by:         MAINT-INABOX-AU
last-modified:  2022-02-11T06:16:24Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 123.51.0.0/24

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
123.51.188.0/24	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

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

IP Address	ASN	Details
123.51.0.154	AS38333 Symbio Networks	`23.74ms` 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
87.202.132.72	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`6.67ms` from Athens, GR
20.141.19.168	AS8070 Microsoft Corporation	`0.67ms` from Boydton, US
3.130.150.200	AS16509 Amazon.com, Inc.	`0.18ms` from Columbus, US
97.132.231.88	AS6167 Verizon Business	`19.73ms` from Denver, US
80.239.193.136	AS1299 Arelion Sweden AB	`0.13ms` from Dublin, IE
95.40.167.216	AS16509 Amazon.com, Inc.	`0.12ms` from Hong Kong, HK
61.254.170.88	AS9318 SK Broadband Co Ltd	`6.90ms` from Incheon, KR
86.178.93.136	AS2856 British Telecommunications PLC	`1.74ms` from London, GB
90.114.36.168	AS3215 Orange S.A.	`5.28ms` from Lyon, FR
78.134.20.136	AS35612 EOLO S.p.A.	`2.07ms` from Milan, IT
65.2.77.104	AS16509 Amazon.com, Inc.	`0.12ms` from Mumbai, IN
213.18.90.232	AS7524 ITEC HANKYU HANSHIN CO.,LTD.	`1.32ms` from Osaka, JP
20.163.90.200	AS8075 Microsoft Corporation	`0.18ms` from Phoenix, US
94.19.64.56	AS35807 SkyNet Ltd.	`0.49ms` from Saint Petersburg, RU
49.22.252.40	AS4766 Korea Telecom	`9.47ms` from Seoul, KR
112.15.190.56	AS56041 China Mobile communications corporation	`6.30ms` from Shanghai, CN
77.238.65.88	AS39135 Fiber 1 Ltd.	`0.32ms` from Sofia, BG
54.250.24.120	AS16509 Amazon.com, Inc.	`0.20ms` from Tokyo, JP
38.99.186.40	AS174 Cogent Communications, LLC	`0.52ms` from Toronto, CA
96.255.255.232	AS701 Verizon Business	`2.98ms` from Ashburn, US
111.167.95.120	AS4837 CHINA UNICOM China169 Backbone	`4.78ms` from Beijing, CN
3.30.47.168	AS8987 Amazon Data Services Ireland Ltd	`0.33ms` from Boardman, US
176.63.121.168	AS21334 One Hungary Ltd.	`13.37ms` from Budapest, HU
176.171.12.184	AS5410 Bouygues Telecom SA	`7.11ms` from Marseille, FR
90.47.1.40	AS3215 Orange S.A.	`11.04ms` from Paris, FR

Traceroute

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

traceroute -a -n -q1 -f5 123.51.0.164

traceroute to 123.51.0.164 (123.51.0.164): 64 hops max, 52 byte packets

5 [] 103.26.69.78 1.416 ms

6 [AS38333] 123.51.0.164 26.252 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.

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