123.51.136.0/24

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:        123.51.136.16 - 123.51.136.23
netname:        NCICNET-NET
descr:          New Century InfoComm Tech. Co., Ltd.
descr:          1F~11F, No. 218, Rueiguang Road
descr:          Taipei Taiwan
country:        TW
admin-c:        NN2062-TW
tech-c:         NN2062-TW
mnt-by:         MAINT-TW-TWNIC
changed:        antispam@seed.net.tw 20160617
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:          886-4-3705-6199ext.78601
fax-no:         886-4-3705-6199ext.78601
e-mail:         irene.wu@millenniumhotels.com
nic-hdl:        NN2062-TW
changed:        hostmaster@twnic.net 20160810
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 123.51.136.0/24

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

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

IP Address	ASN	Details
123.51.136.254	AS9919 New Century InfoComm Tech Co., Ltd.	`3.52ms` 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
50.32.26.136	AS5650 Frontier Communications of America, Inc.	`11.91ms` from Ashburn, US
67.163.112.232	AS7922 Comcast Cable Communications, LLC	`10.05ms` from Ashburn, US
20.233.158.88	AS8075 Microsoft Corporation	`0.92ms` from Dubai, AE
94.220.189.136	AS3209 Vodafone GmbH	`7.72ms` from Duesseldorf, DE
165.49.89.56	AS9304 HGC Global Communications Limited	`3.42ms` from Hong Kong, HK
24.45.9.136	AS6128 Cablevision Systems Corp.	`8.73ms` from New York City, US
60.56.163.40	AS17511 OPTAGE Inc.	`3.13ms` from Osaka, JP
95.140.250.184	AS49890 ABLE agency, s.r.o.	`4.85ms` from Prague, CZ
52.229.124.24	AS8075 Microsoft Corporation	`0.16ms` from Quebec, CA
98.3.81.232	AS11351 Charter Communications Inc	`17.78ms` from Secaucus, US
59.19.93.8	AS4766 Korea Telecom	`7.24ms` from Seoul, KR
211.152.41.200	AS4811 China Telecom (Group)	`4.08ms` from Shanghai, CN
113.26.216.104	AS4134 CHINANET-BACKBONE	`3.81ms` from Taiyuan, CN
124.70.9.136	AS55990 Huawei Cloud Service data center	`3.60ms` from Tianjin, CN
58.9.64.8	AS17552 True Online	`2.90ms` from Bangkok, TH
213.119.113.24	AS6848 Telenet BV	`5.00ms` from Brussels, BE
37.203.15.104	AS6876 TENET Scientific Production Enterprise LLC	`3.35ms` from Chisinau, MD
96.32.58.8	AS20115 Charter Communications LLC	`13.06ms` from Manassas, US
144.48.38.184	AS136557 Host Universal Pty Ltd	`0.05ms` from Melbourne, AU
31.196.218.184	AS3269 Telecom Italia S.p.A.	`8.64ms` from Milan, IT
126.241.83.104	AS17676 SoftBank Corp.	`4.02ms` from Osaka, JP
71.223.187.8	AS209 CenturyLink Communications, LLC	`8.47ms` from Phoenix, US
1.228.98.232	AS9318 SK Broadband Co Ltd	`3.04ms` from Seoul, KR
23.239.178.104	AS396319 Oxylabs	`0.30ms` from Ashburn, US
35.82.110.72	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US

Traceroute

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

traceroute -a -n -q1 123.51.136.80

traceroute to 123.51.136.80 (123.51.136.80): 64 hops max, 52 byte packets

1 [AS15169] 142.250.58.37 135.505 ms

2 [AS15169] 142.250.224.96 134.867 ms

3 *

4 [AS4780] 192.72.124.102 135.569 ms

5 [AS4780] 139.175.56.142 135.972 ms

6 [AS4780] 192.72.107.190 136.848 ms

7 [AS9919] 220.228.21.198 139.128 ms

8 [AS9919] 220.228.21.46 139.144 ms

9 [AS9919] 123.51.136.80 139.697 ms

Measurement taken from

IPinfo ProbeNet in Las Vegas, US

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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