203.66.101.0/24

AS23675 · Taiwan Semiconductor Manufactoring Company, Ltd.

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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

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

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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
203.66.101.252	AS23675 Taiwan Semiconductor Manufactoring Company, Ltd.	`2.68ms` 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
67.191.176.200	AS7922 Comcast Cable Communications, LLC	`4.51ms` from Atlanta, US
120.7.200.232	AS4837 CHINA UNICOM China169 Backbone	`6.22ms` from Beijing, CN
97.70.33.184	AS33363 Charter Communications, Inc	`9.05ms` from Chicago, US
172.77.151.24	AS5650 Frontier Communications of America, Inc.	`16.38ms` from Chicago, US
223.18.106.152	AS9304 HGC Global Communications Limited	`1.58ms` from Hong Kong, HK
202.159.32.56	AS9340 INDO Internet, PT	`0.45ms` from Jakarta, ID
13.43.133.200	AS16509 Amazon.com, Inc.	`0.17ms` from London, GB
92.238.135.104	AS5089 Virgin Media Limited	`8.13ms` from London, GB
90.203.89.72	AS5607 Sky UK Limited	`1.01ms` from London, GB
209.107.178.40	AS36492 Google, LLC	`0.22ms` from Los Angeles, US
80.35.254.40	AS3352 TELEFONICA DE ESPANA S.A.U.	`15.02ms` from Madrid, ES
79.8.202.40	AS3269 Telecom Italia S.p.A.	`7.08ms` from Milan, IT
162.221.92.104	AS21554 Wisconsin CyberLynk Network, Inc.	`0.22ms` from Milwaukee, US
107.159.249.24	AS1403 EBOX	`1.51ms` from Montreal, CA
222.95.110.72	AS4134 CHINANET-BACKBONE	`1.67ms` from Nanjing, CN
180.22.99.88	AS4713 NTT Communications Corporation	`7.93ms` from Osaka, JP
89.10.111.104	AS15659 NextGenTel AS	`2.22ms` from Oslo, NO
77.136.146.200	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`20.00ms` from Paris, FR
120.222.199.248	AS9808 China Mobile Communications Group Co., Ltd.	`0.08ms` from Qingdao, CN
14.32.70.8	AS4766 Korea Telecom	`1.48ms` from Seoul, KR
103.121.207.8	AS138173 Mortgage Choice Limited	`1.32ms` from Sydney, AU
85.124.141.184	AS8412 T-Mobile Austria GmbH	`1.41ms` from Vienna, AT
77.81.242.104	AS43927 HOSTERION SRL	`0.27ms` from Amsterdam, NL
20.23.212.184	AS8075 Microsoft Corporation	`0.21ms` from Amsterdam, NL
152.203.60.104	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`3.15ms` from Bogota, CO

Traceroute

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

traceroute -a -n -q1 -f4 203.66.101.246

traceroute to 203.66.101.246 (203.66.101.246): 64 hops max, 52 byte packets

4 [AS13335] 162.158.242.68 0.526 ms

5 [AS13335] 162.158.241.34 0.788 ms

6 [AS13335] 162.158.242.76 0.713 ms

7 *

8 *

9 *

10 [AS23675] 203.66.101.246 5.758 ms

Measurement taken from

IPinfo ProbeNet in Taipei, TW

On September 11th 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.

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