123.51.199.0/24

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:        123.51.199.0 - 123.51.199.255
netname:        NCICNET-NET
descr:          New Century InfoComm Tech. Co., Ltd.
descr:          1F~11F, No. 218, Rueiguang Road
descr:          Taipei Taiwan
country:        TW
admin-c:        AS100-TW
tech-c:         AS100-TW
mnt-by:         MAINT-TW-TWNIC
changed:        antispam@seed.net.tw 20121001
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:         Allen Shyu
address:        New Century InfoComm Tech Co., Ltd
address:        6F, No. 218, Rueiguang Road
address:        Taipei Taiwan
country:        TW
phone:          +886-2-7700-9968
fax-no:         +886-2-7700-9968
e-mail:         idcservice@fareastone.com.tw
nic-hdl:        AS100-TW
changed:        hostmaster@twnic.net 20101027
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 123.51.199.0/24

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

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

IP Address	ASN	Details
123.51.199.163	AS9919 New Century InfoComm Tech Co., Ltd.	`1.34ms` 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
52.176.239.120	AS8075 Microsoft Corporation	`0.34ms` from Des Moines, US
93.204.40.200	AS3320 Deutsche Telekom AG	`3.16ms` from Frankfurt am Main, DE
79.233.3.152	AS3320 Deutsche Telekom AG	`2.14ms` from Hamburg, DE
155.254.141.152	AS7403 Colba Net Inc.	`9.72ms` from Montreal, CA
39.72.3.88	AS4837 CHINA UNICOM China169 Backbone	`7.80ms` from Qingdao, CN
71.11.29.216	AS20115 Charter Communications LLC	`9.77ms` from Reston, US
179.34.81.248	AS26615 TIM S/A	`2.48ms` from Sao Paulo, BR
125.224.112.136	AS3462 Data Communication Business Group	`3.01ms` from Taipei, TW
210.202.106.104	AS7482 Asia Pacific On-line Service Inc.	`7.98ms` from Taipei, TW
208.81.123.40	AS19432 Sierra Wireless, Inc.	`4.43ms` from Vancouver, CA
23.198.229.152	AS16625 Akamai Technologies, Inc.	`0.26ms` from Warsaw, PL
141.196.71.184	AS16135 Turkcell A.S.	`14.55ms` from Ankara, TR
1.191.102.168	AS4837 CHINA UNICOM China169 Backbone	`11.41ms` from Changchun, CN
71.76.147.168	AS11426 Charter Communications Inc	`7.97ms` from Charlotte, US
212.192.31.232	AS199785 Cloud Hosting Solutions, Limited.	`0.13ms` from Frankfurt am Main, DE
191.99.252.40	AS27738 Ecuadortelecom S.A.	`3.32ms` from Guayaquil, EC
157.66.10.24	AS151913 Ha Giang province Department of Information and Communications	`4.84ms` from Hanoi, VN
170.199.205.8	AS200005 Akamai International B.V.	`0.33ms` from London, GB
195.10.228.24	AS8553 Avensys Networks Ltd	`3.64ms` from London, GB
62.43.138.104	AS6739 VODAFONE ONO, S.A.	`9.82ms` from Madrid, ES
162.206.83.216	AS7018 AT&T Enterprises, LLC	`3.33ms` from Miami, US
72.90.246.104	AS701 Verizon Business	`2.37ms` from New York City, US
176.188.234.184	AS5410 Bouygues Telecom SA	`7.17ms` from Paris, FR
108.177.123.184	AS15169 Google LLC	`0.53ms` from Santiago, CL
14.89.184.40	AS4766 Korea Telecom	`1.76ms` 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 123.51.199.166

traceroute to 123.51.199.166 (123.51.199.166): 64 hops max, 52 byte packets

1 [AS15169] 142.250.214.223 284.577 ms

2 *

3 [AS4780] 139.175.58.28 285.332 ms

4 [AS4780] 139.175.57.186 284.787 ms

5 [AS4780] 192.72.107.190 285.856 ms

6 [AS9919] 220.228.20.66 283.988 ms

7 [AS9919] 218.32.221.2 284.065 ms

8 [AS9919] 220.228.172.30 284.456 ms

9 [AS9919] 123.51.199.166 285.24 ms

Measurement taken from

IPinfo ProbeNet in Sao Paulo, BR

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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