123.51.200.0/24

AS9919 · New Century InfoComm Tech Co., Ltd.

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Summary

Country	Taiwan
Domain	seed.net.tw
ASN	AS9919
Parent Range	123.51.128.0/17
Registry	TWNIC
ID	NCICNET-NET

WHOIS Details

inetnum:        123.51.200.128 - 123.51.200.191
netname:        NCICNET-NET
descr:          New Century InfoComm Tech. Co., Ltd.
descr:          1F~11F, No. 218, Rueiguang Road
descr:          Taipei Taiwan
country:        TW
admin-c:        NN2928-TW
tech-c:         NN2928-TW
mnt-by:         MAINT-TW-TWNIC
changed:        antispam@seed.net.tw 20170920
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:          886-2-8793-6999ext.7590
fax-no:         886-2-8793-6999ext.7590
e-mail:         yujeng@cathaybk.com.tw
nic-hdl:        NN2928-TW
changed:        hostmaster@twnic.net 20170920
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 123.51.200.0/24

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 no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
123.51.200.154	AS9919 New Century InfoComm Tech Co., Ltd.	`0.76ms` 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
67.165.16.120	AS7922 Comcast Cable Communications, LLC	`6.83ms` from Morris Plains, US
148.77.105.8	AS397394 Gold Coast Broadband	`2.84ms` from New York City, US
39.68.168.248	AS4837 CHINA UNICOM China169 Backbone	`8.35ms` from Qingdao, CN
18.233.83.104	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
118.48.171.136	AS4766 Korea Telecom	`1.34ms` from Seoul, KR
58.235.6.104	AS9318 SK Broadband Co Ltd	`7.50ms` from Seoul, KR
5.53.201.184	AS13124 A1 Bulgaria EAD	`6.95ms` from Sofia, BG
222.128.41.72	AS4808 China Unicom Beijing Province Network	`4.01ms` from Beijing, CN
44.237.45.72	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, US
92.112.67.72	AS212238 Datacamp Limited	`0.41ms` from Bratislava, SK
77.2.251.168	AS6805 Telefonica Germany GmbH & Co.OHG	`8.15ms` from Frankfurt am Main, DE
14.232.22.120	AS45899 VNPT Corp	`1.02ms` from Hanoi, VN
65.70.56.232	AS7018 AT&T Enterprises, LLC	`1.43ms` from Houston, US
20.219.134.120	AS8075 Microsoft Corporation	`0.15ms` from Lohogaon, IN
151.20.42.40	AS1267 WIND TRE S.P.A.	`2.00ms` from Milan, IT
129.20.76.88	AS2200 Renater	`7.01ms` from Paris, FR
46.13.145.104	AS13036 T-Mobile Czech Republic a.s.	`5.36ms` from Prague, CZ
151.63.88.216	AS1267 WIND TRE S.P.A.	`11.25ms` from Rome, IT
117.247.154.40	AS9829 National Internet Backbone	`17.92ms` from Saint Thomas Mount, IN
173.70.215.200	AS701 Verizon Business	`2.78ms` from Secaucus, US
125.132.32.184	AS4766 Korea Telecom	`1.71ms` from Seoul, KR
121.125.23.104	AS9318 SK Broadband Co Ltd	`3.93ms` from Seoul, KR
126.73.108.136	AS17676 SoftBank Corp.	`5.52ms` from Tokyo, JP
73.132.53.40	AS7922 Comcast Cable Communications, LLC	`6.96ms` from Ashburn, US
122.57.59.120	AS4771 Spark New Zealand Trading Ltd.	`0.86ms` from Auckland, NZ

Traceroute

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

traceroute -a -n -q1 -f7 123.51.200.154

traceroute to 123.51.200.154 (123.51.200.154): 64 hops max, 52 byte packets

7 [AS4780] 139.175.58.209 122.082 ms

8 [AS4780] 139.175.56.142 131.436 ms

9 [AS4780] 192.72.107.190 135.623 ms

10 [AS9919] 220.228.20.154 140.16 ms

11 [AS9919] 123.51.200.154 117.972 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

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.

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