1. All IP Ranges
  2. 123.0.0.0/8
  3. 123.51.0.0/16
  4. AS9919  | 123.51.128.0/19

123.51.128.0/19

AS9919  ·  New Century InfoComm Tech Co., Ltd.

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

Summary

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

WHOIS Details

inetnum:        123.51.128.0 - 123.51.255.255
netname:        NCICNET-NET
descr:          New Century InfoComm Tech. Co., Ltd.
descr:          1F~11F, No. 218, Rueiguang Road
descr:          Taipei Taiwan 114
country:        TW
admin-c:        JC256-AP
tech-c:         JC256-AP
abuse-c:        AT939-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-TW-TWNIC
mnt-lower:      MAINT-TW-TWNIC
mnt-routes:     MAINT-TW-TWNIC
mnt-irt:        IRT-NCIC-TW
last-modified:  2023-11-30T03:52:57Z
source:         APNIC

irt:            IRT-NCIC-TW
address:        New Century InfoComm Tech. Co., Ltd.
address:        1F~11F, No. 218, Rueiguang Road
address:        Taipei Taiwan 114
e-mail:         antispam@seed.net.tw
abuse-mailbox:  antispam@seed.net.tw
admin-c:        JC256-AP
tech-c:         JC256-AP
auth:           # Filtered
mnt-by:         MAINT-TW-TWNIC
last-modified:  2025-11-06T07:26:18Z
source:         APNIC

role:           ABUSE TWNICAP
country:        ZZ
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan
phone:          +000000000
e-mail:         hostmaster@twnic.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
nic-hdl:        AT939-AP
remarks:        Generated from irt object IRT-TWNIC-AP
remarks:        hostmaster@twnic.tw was validated on 2025-05-23
abuse-mailbox:  hostmaster@twnic.tw
mnt-by:         APNIC-ABUSE
last-modified:  2025-05-23T00:02:10Z
source:         APNIC

person:         Jonas Chou
nic-hdl:        JC256-AP
e-mail:         Jonaschou@fareastone.com.tw
address:        2F, No.218, Rueiguang Road
address:        Taipei, 114, R.O.C
phone:          +886-2-7700-8888
fax-no:         +886-2-7700-8888
country:        TW
mnt-by:         MAINT-TW-TWNIC
last-modified:  2012-12-18T10:10:01Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 123.51.128.0/19

Range ASN Company Num of IPs
123.51.128.0/17 AS9919 New Century InfoComm Tech. Co., Ltd. 32,768
123.51.128.0/17 AS4780 New Century InfoComm Tech. Co., Ltd. 32,768

BGP prefixes that are contained by 123.51.128.0/19

Range ASN Company Num of IPs
123.51.132.0/22 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

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
123.51.0.0/24 AS38333 Level 6, 9-13 Young Street 256
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 46 domain names hosted across 25 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
123.51.155.59 v360.com.tw 8
123.51.159.35 taipei-twins.com 3
123.51.148.21 fcuaa.tw 2
123.51.153.129 geeknetworks.com.au 1
123.51.144.172 yurich.com.tw 1
123.51.143.12 milksha.tech 1
123.51.140.83 flyingphoenix.com.tw 1
123.51.152.96 foreseepharmacms.com 1
123.51.152.128 9tw.im 1
123.51.145.26 wpgo2o.com 1
123.51.157.159 bestemerald.com.tw 1

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

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

IP Address ASN Details
123.51.144.56 AS9919 New Century InfoComm Tech Co., Ltd. 0.97ms from Taipei, TW
123.51.153.89 AS9919 New Century InfoComm Tech Co., Ltd. 1.45ms from Taipei, TW
123.51.159.41 AS4780 Digital United Inc. 1.64ms from Taipei, TW
123.51.143.19 AS4780 Digital United Inc. 5.95ms from Taipei, TW
123.51.141.52 AS9919 New Century InfoComm Tech Co., Ltd. 1.71ms from Taipei, TW
123.51.138.254 AS9919 New Century InfoComm Tech Co., Ltd. 3.63ms from Taipei, TW
123.51.158.71 AS9919 New Century InfoComm Tech Co., Ltd. 1.14ms from Taipei, TW
123.51.155.121 AS4780 Digital United Inc. 5.93ms from Taipei, TW
123.51.131.254 AS9919 New Century InfoComm Tech Co., Ltd. 1.84ms from Taipei, TW
123.51.145.18 AS9919 New Century InfoComm Tech Co., Ltd. 1.61ms from Taipei, TW
123.51.152.179 AS9919 New Century InfoComm Tech Co., Ltd. 0.82ms from Taipei, TW
123.51.146.59 AS9919 New Century InfoComm Tech Co., Ltd. 3.11ms from Taipei, TW
123.51.129.254 AS9919 New Century InfoComm Tech Co., Ltd. 2.20ms from Taipei, TW
123.51.130.254 AS9919 New Century InfoComm Tech Co., Ltd. 2.08ms from Taipei, TW
123.51.128.37 AS9919 New Century InfoComm Tech Co., Ltd. 1.78ms from Taipei, TW
123.51.139.254 AS9919 New Century InfoComm Tech Co., Ltd. 3.77ms from Taipei, TW
123.51.133.255 AS4780 Digital United Inc. 0.75ms from Taipei, TW
123.51.154.233 AS9919 New Century InfoComm Tech Co., Ltd. 3.26ms from Taipei, TW
123.51.156.32 AS9919 New Century InfoComm Tech Co., Ltd. 1.48ms from Taipei, TW
123.51.142.254 AS9919 New Century InfoComm Tech Co., Ltd. 3.70ms from Taipei, TW
123.51.137.254 AS9919 New Century InfoComm Tech Co., Ltd. 3.58ms from Taipei, TW
123.51.134.254 AS9919 New Century InfoComm Tech Co., Ltd. 1.82ms from Taipei, TW
123.51.151.254 AS4780 Digital United Inc. 5.77ms from Taipei, TW
123.51.150.81 AS9919 New Century InfoComm Tech Co., Ltd. 3.32ms from Taipei, TW
123.51.148.44 AS9919 New Century InfoComm Tech Co., Ltd. 1.00ms 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
172.201.34.99 AS8075 Microsoft Corporation 0.29ms from Amsterdam, NL
13.248.179.131 AS16509 Amazon.com, Inc. 0.04ms from Bangkok, TH
3.144.54.35 AS16509 Amazon.com, Inc. 0.25ms from Columbus, US
54.154.158.35 AS16509 Amazon.com, Inc. 0.20ms from Dublin, IE
200.223.58.115 AS7738 V tal 14.38ms from Fortaleza, BR
103.135.242.131 AS137263 NETEASE HONG KONG LIMITED 3.92ms from Hong Kong, HK
92.24.23.67 AS13285 TalkTalk Communications Limited 5.58ms from London, GB
81.129.54.227 AS2856 British Telecommunications PLC 4.26ms from London, GB
195.188.18.195 AS5089 Virgin Media Limited 1.83ms from London, GB
76.169.229.67 AS20001 Charter Communications Inc 5.68ms from Los Angeles, US
5.36.223.227 AS28885 OmanTel NAP 2.26ms from Muscat, OM
38.30.48.115 AS174 Cogent Communications, LLC 0.52ms from New York City, US
96.232.139.19 AS701 Verizon Business 3.31ms from New York City, US
126.28.189.83 AS17676 SoftBank Corp. 2.25ms from Osaka, JP
13.38.72.83 AS16509 Amazon.com, Inc. 0.13ms from Paris, FR
136.60.192.3 AS16591 Google Fiber Inc. 1.85ms from Salt Lake City, US
40.78.86.227 AS8075 Microsoft Corporation 0.57ms from San Jose, US
24.171.245.131 AS14638 Liberty Communications of Puerto Rico LLC 11.06ms from San Juan, PR
218.166.2.115 AS3462 Data Communication Business Group 4.40ms from Taichung, TW
124.117.39.211 AS4134 CHINANET-BACKBONE 1.55ms from UEruemqi, CN
129.69.116.147 AS553 BelWue-Koordination 3.26ms from Zuerich, CH
124.123.105.99 AS24309 Atria Convergence Technologies Pvt. Ltd. Broadband Internet Service Provider INDIA 1.33ms from Chennai, IN
66.28.239.243 AS174 Cogent Communications, LLC 0.12ms from Chicago, US
187.228.238.163 AS8151 UNINET 4.69ms from Guadalajara, MX
217.231.226.147 AS3320 Deutsche Telekom AG 3.70ms from Hamburg, DE

Traceroute

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

$
traceroute -a -n -q1 123.51.139.254
traceroute to 123.51.139.254 (123.51.139.254): 64 hops max, 52 byte packets
1 [AS63023] 38.89.70.1 23.913 ms
3 [AS6461] 64.125.19.130 0.869 ms
4 [AS6461] 64.125.24.201 0.881 ms
5 [AS6461] 64.125.19.141 0.489 ms
6 [AS3491] 205.177.32.53 1.135 ms
7 [AS3491] 63.223.9.126 143.773 ms
8 *
9 [AS4780] 139.175.59.160 122.437 ms
10 [AS4780] 139.175.58.146 122.439 ms
11 [AS4780] 192.72.107.98 123.147 ms
12 [AS9919] 220.228.21.186 125.561 ms
13 [AS9919] 123.51.139.254 123.031 ms
Measurement taken from IPinfo ProbeNet in Seattle, US
On

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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs