203.66.101.0/24

AS23675 · Taiwan Semiconductor Manufactoring Company, Ltd.

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

Summary

Country	Taiwan
Domain	cht.com.tw
ASN	AS23675
Parent Range	203.66.0.0/16
Registry	TWNIC
ID	TAIWAN-SEMICONDU-HC-TW

WHOIS Details

inetnum:        203.66.101.0 - 203.66.101.255
netname:        TAIWAN-SEMICONDU-HC-TW
descr:          Chunghwa Telecom Co.,Ltd.
descr:          No.21-3, Sec. 1, Xinyi Rd., Taipei 10048, Taiwan, R.O.C.
descr:          Taipei Taiwan
country:        TW
admin-c:        JL5545-TW
tech-c:         JL5545-TW
mnt-by:         MAINT-TW-TWNIC
changed:        network-adm@hinet.net 20121120
status:
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:         Zeng Mo Yi
address:        Taiwan Semiconductor Manufacturing Company Limited
address:        No. 188, Yuanqu 2nd Rd., Baoshan Township,
address:        Hsinchu County County Taiwan
country:        TW
phone:          +886-3-563-6688
fax-no:         +886-3-563-6688
e-mail:         lolo_tzeng@tsmc.com
nic-hdl:        JL5545-TW
changed:        hostmaster@twnic.net 20250106
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 203.66.101.0/24

Range	ASN	Company	Num of IPs
203.66.0.0/16	AS3462	Data Communication Business Group,	65,536

Nearby Ranges

BGP prefixes that overlap with 203.66.0.0/16

Range	ASN	Company	Num of IPs
203.66.0.0/16	AS3462	Data Communication Business Group,	65,536
203.66.100.0/24	AS23675	Chunghwa Telecom Co.,Ltd.	256
203.66.102.0/24	AS23675	Chunghwa Telecom Co.,Ltd.	256
203.66.245.0/24	AS23675	Chunghwa Telecom Co.,Ltd.	256

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

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

IP Address	ASN	Details
203.66.101.253	AS23675 Taiwan Semiconductor Manufactoring Company, Ltd.	`2.85ms` 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
52.255.231.56	AS8075 Microsoft Corporation	`0.37ms` from Ashburn, US
75.166.218.120	AS209 CenturyLink Communications, LLC	`2.37ms` from Denver, US
71.237.84.232	AS7922 Comcast Cable Communications, LLC	`4.57ms` from Denver, US
176.170.175.168	AS5410 Bouygues Telecom SA	`7.97ms` from Frankfurt am Main, DE
110.225.104.120	AS24560 Bharti Airtel Ltd., Telemedia Services	`1.58ms` from Kolkata, IN
47.154.56.72	AS5650 Frontier Communications of America, Inc.	`2.39ms` from Los Angeles, US
83.48.5.168	AS3352 TELEFONICA DE ESPANA S.A.U.	`2.68ms` from Madrid, ES
179.42.241.232	AS10269 Belize Telemedia Limited	`17.70ms` from Miami, US
155.185.247.232	AS137 Consortium GARR	`8.19ms` from Milan, IT
83.193.73.40	AS3215 Orange S.A.	`14.15ms` from Paris, FR
13.222.247.72	AS14618 Amazon.com, Inc.	`0.42ms` from Reston, US
14.67.94.104	AS4766 Korea Telecom	`2.98ms` from Seoul, KR
218.81.57.8	AS4812 China Telecom (Group)	`4.50ms` from Shanghai, CN
103.13.81.152	AS2914 NTT America, Inc.	`0.25ms` from Sydney, AU
132.66.110.56	AS378 IUCC - Israel InterUniversity Computation Center	`0.93ms` from Tel Aviv, IL
34.165.67.168	AS396982 Google LLC	`0.12ms` from Tel Aviv, IL
52.196.218.8	AS16509 Amazon.com, Inc.	`0.16ms` from Tokyo, JP
58.87.218.136	AS2527 Sony Network Communications Inc.	`9.23ms` from Tokyo, JP
180.52.36.136	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.13ms` from Tokyo, JP
34.211.166.168	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US
74.192.75.8	AS19108 Optimum	`10.74ms` from Dallas, US
76.131.244.8	AS7922 Comcast Cable Communications, LLC	`3.55ms` from Denver, US
4.144.0.56	AS8075 Microsoft Corporation	`0.29ms` from Hong Kong, HK
66.120.138.200	AS7018 AT&T Enterprises, LLC	`1.78ms` from Los Angeles, US
81.44.109.120	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.14ms` from Madrid, ES

Traceroute

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

traceroute -a -n -q1 -f6 203.66.101.247

traceroute to 203.66.101.247 (203.66.101.247): 64 hops max, 52 byte packets

6 [AS64050] 61.19.60.108 2.125 ms

7 [AS14789] 172.70.116.111 1.677 ms

8 [AS14789] 172.70.116.84 1.993 ms

9 [AS14789] 172.70.116.94 1.87 ms

10 *

11 *

12 *

13 [AS23675] 203.66.101.247 107.952 ms

Measurement taken from

IPinfo ProbeNet in Bangkok, TH

On February 7th 2026

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