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 2025-05-08
mnt-by:         MAINT-INABOX-AU
last-modified:  2025-11-18T00:32:01Z
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

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

IP Address	ASN	Details
123.51.0.223	AS38333 Symbio Networks	`23.69ms` 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
85.16.70.72	AS9145 EWE TEL GmbH	`3.40ms` from Hamburg, DE
38.162.73.200	AS8796 FASTNET DATA INC	`0.30ms` from Los Angeles, US
79.19.213.152	AS3269 Telecom Italia S.p.A.	`6.28ms` from Milan, IT
122.20.34.152	AS4713 NTT DOCOMO BUSINESS,Inc.	`6.94ms` from Osaka, JP
129.146.120.88	AS31898 Oracle Corporation	`0.78ms` from Phoenix, US
78.84.203.88	AS12578 SIA Tet	`1.57ms` from Riga, LV
222.97.81.248	AS4766 Korea Telecom	`6.65ms` from Seoul, KR
1.15.154.248	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.49ms` from Shanghai, CN
43.142.130.248	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.52ms` from Shanghai, CN
20.24.166.248	AS8075 Microsoft Corporation	`0.51ms` from Singapore, SG
54.66.58.40	AS16509 Amazon.com, Inc.	`0.15ms` from Sydney, AU
122.9.38.24	AS23724 IDC, China Telecommunications Corporation	`3.71ms` from Beijing, CN
52.81.180.200	AS55960 Beijing Guanghuan Xinwang Digital	`3.53ms` from Beijing, CN
5.13.163.152	AS8708 DIGI ROMANIA S.A.	`4.95ms` from Bucharest, RO
122.100.179.152	AS4609 Companhia de Telecomunicacoes de Macau SARL	`2.62ms` from Hong Kong, HK
15.161.79.168	AS16509 Amazon.com, Inc.	`0.15ms` from Milan, IT
114.145.56.248	AS4713 NTT DOCOMO BUSINESS,Inc.	`6.63ms` from Osaka, JP
191.162.175.40	AS26615 TIM S/A	`0.94ms` from Rio de Janeiro, BR
103.6.169.200	AS36007 Kamatera, Inc.	`0.23ms` from Singapore, SG
201.185.59.248	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`14.65ms` from Bogota, CO
3.23.81.216	AS16509 Amazon.com, Inc.	`0.13ms` from Columbus, US
206.43.21.8	AS267587 CLICK SPEED SERVICOS DE TELECOMUNICACOES LTDA - EP	`18.54ms` from Fortaleza, BR
31.128.186.8	AS50648 PE UAinet	`8.12ms` from Kyiv, UA
109.154.198.152	AS2856 British Telecommunications PLC	`12.06ms` from London, GB
99.1.234.104	AS7018 AT&T Enterprises, LLC	`16.58ms` from Miami, 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 123.51.0.161

traceroute to 123.51.0.161 (123.51.0.161): 64 hops max, 52 byte packets

6 [AS38333] 123.51.0.161 24.2 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On November 14th 2025

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.

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