123.51.155.0/24

AS4780 · Digital United Inc.

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Summary

Country	Taiwan
Domain	seed.net.tw
ASN	AS4780
Parent Range	123.51.128.0/17
Registry	TWNIC
ID	NCICNET-NET

WHOIS Details

inetnum:        123.51.155.0 - 123.51.155.7
netname:        NCICNET-NET
descr:          New Century InfoComm Tech. Co., Ltd.
descr:          1F~11F, No. 218, Rueiguang Road
descr:          Taipei Taiwan
country:        TW
admin-c:        NN2113-TW
tech-c:         NN2113-TW
mnt-by:         MAINT-TW-TWNIC
changed:        antispam@seed.net.tw 20161110
status:         ASSIGNED NON-PORTABLE
remarks:        This information has been partially mirrored by APNIC from
remarks:        TWNIC. To obtain more specific information, please use the
remarks:        TWNIC whois server at whois.twnic.net.
source:         TWNIC


person:         N/A N/A
address:        N/A
address:        N/A
address:        N/A Taiwan
country:        TW
phone:          886-9-8765-4321
fax-no:         886-9-8765-4321
e-mail:         test@test.com
nic-hdl:        NN2113-TW
changed:        hostmaster@twnic.net 20160815
remarks:        This information has been partially mirrored by APNIC from
remarks:        TWNIC. To obtain more specific information, please use the
remarks:        TWNIC whois server at whois.twnic.net.
source:         TWNIC

Overlapping Ranges

BGP prefixes that contain 123.51.155.0/24

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

Hosted domains

There are 9 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

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

IP Address	ASN	Details
123.51.155.134	AS4780 Digital United Inc.	`5.67ms` from Taipei, TW

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
66.30.67.120	AS7922 Comcast Cable Communications, LLC	`9.41ms` from Boston, US
149.75.36.8	AS6079 RCN	`6.50ms` from Chicago, US
136.115.6.56	AS396982 Google LLC	`0.15ms` from Council Bluffs, US
185.131.75.232	AS3209 Vodafone GmbH	`3.26ms` from Duesseldorf, DE
87.64.224.168	AS5432 Proximus NV	`6.37ms` from Gravelines, FR
61.10.94.8	AS9908 HK Cable TV Ltd	`5.56ms` from Hong Kong, HK
61.147.61.24	AS4134 CHINANET-BACKBONE	`6.92ms` from Huai'an, CN
191.55.26.216	AS53006 ALGAR TELECOM S/A	`7.73ms` from Osasco, BR
185.209.225.24	AS52157 NEAS ENERGI TELEKOM AS	`10.59ms` from Oslo, NO
191.26.68.8	AS26599 TELEFÔNICA BRASIL S.A	`1.63ms` from Sao Paulo, BR
121.169.3.120	AS4766 Korea Telecom	`1.56ms` from Seoul, KR
58.122.217.136	AS9318 SK Broadband Co Ltd	`7.45ms` from Seoul, KR
123.11.199.200	AS4837 CHINA UNICOM China169 Backbone	`7.98ms` from Zhengzhou, CN
34.220.102.232	AS16509 Amazon.com, Inc.	`0.48ms` from Boardman, US
146.115.75.232	AS6079 RCN	`7.34ms` from Boston, US
96.230.14.8	AS701 Verizon Business	`2.00ms` from Boston, US
35.241.245.152	AS396982 Google LLC	`0.15ms` from Brussels, BE
167.160.229.152	AS393844 Pine Telephone Company, INC.	`15.09ms` from Dallas, US
20.174.46.248	AS8075 Microsoft Corporation	`0.92ms` from Dubai, AE
175.33.16.24	AS4804 Microplex PTY LTD	`3.38ms` from Melbourne, AU
31.190.54.248	AS1267 WIND TRE S.P.A.	`3.03ms` from Milan, IT
220.210.232.136	AS18144 Enecom,Inc.	`8.94ms` from Osaka, JP
45.164.144.120	AS268631 IBT TELECOM	`1.29ms` from Osasco, BR
195.70.175.168	AS25400 Telia Norge AS	`4.31ms` from Oslo, NO
218.51.211.168	AS9318 SK Broadband Co Ltd	`1.91ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f5 123.51.155.121

traceroute to 123.51.155.121 (123.51.155.121): 64 hops max, 52 byte packets

5 [] 220.128.1.141 3.649 ms

6 [AS3462] 211.22.41.106 3.71 ms

7 [AS4780] 139.175.58.75 3.796 ms

8 [AS4780] 139.175.56.142 6.137 ms

9 [AS4780] 139.175.57.138 8.249 ms

10 [AS4780] 192.72.223.154 13.93 ms

11 [AS4780] 123.51.155.121 8.833 ms

Measurement taken from

IPinfo ProbeNet in Taichung, TW

On October 3rd 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.

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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