123.205.16.0/21

AS18049 · Taiwan Infrastructure Network Technologie

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

Summary

Country	Taiwan
Domain	seed.net.tw
ASN	AS18049
Parent Range	123.205.0.0/18
Registry	TWNIC
ID	TINP-TW

WHOIS Details

inetnum:        123.205.0.0 - 123.205.63.255
netname:        TINP-TW
descr:          New Century InfoComm Tech. Co., Ltd.
descr:          1F~11F, No. 218, Rueiguang Road
descr:          Taipei Taiwan
country:        TW
admin-c:        RR129-TW
tech-c:         RR129-TW
mnt-by:         MAINT-TW-TWNIC
changed:        antispam@seed.net.tw 20121211
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:         root root
address:        TINP
address:        No.68, Sec. 1, Guoguang Rd., Dali City, Taichung County 412, Taiwa
address:        N/A Taiwan
country:        TW
phone:          +886-4-3705-0705 ext 5107
fax-no:         +886-4-3705-0688
e-mail:         robin@tinp.net.tw
nic-hdl:        RR129-TW
changed:        hostmaster@twnic.net 20121211
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 123.205.16.0/21

Range	ASN	Company	Num of IPs
123.205.0.0/18	AS18049	New Century InfoComm Tech. Co., Ltd.	16,384
123.205.0.0/18	AS4780	New Century InfoComm Tech. Co., Ltd.	16,384
123.205.0.0/18	AS9919	New Century InfoComm Tech. Co., Ltd.	16,384
123.204.0.0/15	AS4780	Digital United Inc.	131,072

Nearby Ranges

BGP prefixes that overlap with 123.205.0.0/16

Range	ASN	Company	Num of IPs
123.204.0.0/15	AS4780	Digital United Inc.	131,072
123.205.0.0/18	AS18049	New Century InfoComm Tech. Co., Ltd.	16,384
123.205.0.0/18	AS9919	New Century InfoComm Tech. Co., Ltd.	16,384
123.205.0.0/18	AS4780	New Century InfoComm Tech. Co., Ltd.	16,384
123.205.160.0/19	AS131602	New Century InfoComm Tech. Co., Ltd.	8,192
123.205.128.0/19	AS131602	New Century InfoComm Tech. Co., Ltd.	8,192
123.205.64.0/19	AS4780	New Century InfoComm Tech. Co., Ltd.	8,192
123.205.64.0/19	AS18049	New Century InfoComm Tech. Co., Ltd.	8,192

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
123.205.19.54	AS9919 New Century InfoComm Tech Co., Ltd.	`4.04ms` from Taipei, TW
123.205.20.92	AS18049 Taiwan Infrastructure Network Technologie	`11.02ms` from Taipei, TW
123.205.18.174	AS18049 Taiwan Infrastructure Network Technologie	`3.59ms` from Taipei, TW
123.205.16.97	AS18049 Taiwan Infrastructure Network Technologie	`3.74ms` from Taipei, TW
123.205.17.84	AS18049 Taiwan Infrastructure Network Technologie	`3.60ms` from Taipei, TW
123.205.21.215	AS18049 Taiwan Infrastructure Network Technologie	`16.74ms` from Taipei, TW
123.205.23.179	AS18049 Taiwan Infrastructure Network Technologie	`10.35ms` from Taipei, TW
123.205.22.35	AS18049 Taiwan Infrastructure Network Technologie	`13.13ms` 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
98.25.199.53	AS11426 Charter Communications Inc	`10.44ms` from Atlanta, US
2.245.61.197	AS6805 Telefonica Germany GmbH & Co.OHG	`3.01ms` from Berlin, DE
71.232.77.165	AS7922 Comcast Cable Communications, LLC	`9.02ms` from Boston, US
201.25.108.101	AS8167 V tal	`19.35ms` from Brasilia, BR
34.80.71.165	AS396982 Google LLC	`0.13ms` from Chang-hua, TW
195.184.120.101	AS3308 Telia Company AB	`0.99ms` from Copenhagen, DK
223.189.199.149	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`11.80ms` from Delhi, IN
4.38.106.197	AS3356 Level 3 Parent, LLC	`0.36ms` from Denver, US
175.29.168.213	AS17469 Access Telecom (BD) Ltd.	`0.79ms` from Dhaka, BD
93.229.186.117	AS3320 Deutsche Telekom AG	`7.48ms` from Frankfurt am Main, DE
174.172.34.85	AS7922 Comcast Cable Communications, LLC	`12.38ms` from Herndon, US
144.126.234.21	AS14061 DigitalOcean, LLC	`0.28ms` from London, GB
173.240.154.133	AS36352 HostPapa	`0.30ms` from Los Angeles, US
47.23.156.149	AS6128 Cablevision Systems Corp.	`4.11ms` from New York City, US
126.23.0.21	AS17676 SoftBank Corp.	`6.89ms` from Osaka, JP
212.51.173.149	AS16347 ADISTA SAS	`8.79ms` from Paris, FR
119.178.204.229	AS4837 CHINA UNICOM China169 Backbone	`9.07ms` from Qingdao, CN
92.98.195.245	AS5384 Emirates Internet	`4.92ms` from Al Fujairah City, AE
59.110.163.133	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.86ms` from Beijing, CN
121.28.71.245	AS4837 CHINA UNICOM China169 Backbone	`7.07ms` from Beijing, CN
101.74.70.165	AS4837 CHINA UNICOM China169 Backbone	`8.87ms` from Beijing, CN
73.246.187.69	AS7922 Comcast Cable Communications, LLC	`5.02ms` from Chicago, US
98.46.174.197	AS7922 Comcast Cable Communications, LLC	`5.93ms` from Chicago, US
203.94.83.85	AS9329 Sri Lanka Telecom Internet	`1.12ms` from Colombo, LK
81.13.195.181	AS15547 netplus.ch SA	`3.04ms` from Geneve, CH

Traceroute

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

traceroute -a -n -q1 123.205.17.139

traceroute to 123.205.17.139 (123.205.17.139): 64 hops max, 52 byte packets

1 [AS15169] 72.14.235.202 40.367 ms

2 *

3 [AS4780] 139.175.58.201 37.105 ms

4 [AS4780] 192.72.124.97 38.766 ms

5 [AS4780] 192.72.49.122 38.561 ms

6 [AS4780] 192.72.49.118 38.809 ms

7 [AS4780] 192.72.44.202 39.352 ms

8 *

9 *

10 [AS18049] 123.205.17.139 39.235 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On December 28th 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.

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