221.120.42.0/23

AS17421 · Mobile Business Group

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Summary

Country	Taiwan
Domain	cht.com.tw
ASN	AS17421
Registry	TWNIC
ID	EMOME-NET

WHOIS Details

inetnum:        221.120.32.0 - 221.120.63.255
netname:        EMOME-NET
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:        CFK7-TW
tech-c:         CFK7-TW
mnt-by:         MAINT-TW-TWNIC
changed:        [email protected] 20040920
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

Nearby Ranges

BGP prefixes that overlap with 221.120.0.0/16

Range	ASN	Company	Num of IPs
221.120.128.0/20	AS4857	IP EXCHANGE International Networks	4,096
221.120.168.0/21	AS18070	Global Network Core Co.,Ltd.	2,048
221.120.96.0/21	AS135076	INFOCOM LIMITED	2,048
221.120.160.0/22	AS38901	EZECOM CO., LTD.	1,024
221.120.164.0/22	AS64098	TASMANET	1,024
221.120.97.0/24	AS135076	INFOCOM LIMITED	256
221.120.98.0/24	AS135076	INFOCOM LIMITED	256
221.120.99.0/24	AS135076	INFOCOM LIMITED	256
221.120.100.0/24	AS135076	INFOCOM LIMITED	256
221.120.81.0/24	AS17421	Chunghwa Telecom Co.,Ltd.	256
221.120.82.0/24	AS17421	Chunghwa Telecom Co.,Ltd.	256
221.120.83.0/24	AS17421	Chunghwa Telecom Co.,Ltd.	256
221.120.238.0/24	AS17557	Ufone	256
221.120.128.0/24	AS4857	IP EXCHANGE International Networks	256
221.120.80.0/24	AS17421	Chunghwa Telecom Co.,Ltd.	256
221.120.101.0/24	AS135076	INFOCOM LIMITED	256
221.120.102.0/24	AS135076	INFOCOM LIMITED	256
221.120.103.0/24	AS135076	INFOCOM LIMITED	256
221.120.96.0/24	AS135076	INFOCOM LIMITED	256

Hosted domains

There are 2 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

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

IP Address	ASN	Details
221.120.42.170	AS17421 Mobile Business Group	`15.05ms` from Taichung, TW
221.120.43.165	AS17421 Mobile Business Group	`16.19ms` 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
52.157.255.167	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
222.179.105.55	AS4134 CHINANET-BACKBONE	`2.07ms` from Chongqing, CN
84.140.33.199	AS3320 Deutsche Telekom AG	`2.78ms` from Duesseldorf, DE
102.162.66.71	AS30999 EMTEL LIMITED	`14.63ms` from Ebene, MU
196.26.201.103	AS3741 Dimension Data	`0.93ms` from Johannesburg, ZA
162.251.44.39	AS29804 Valu-Net LLC.	`3.73ms` from Kansas City, US
151.236.92.167	AS204720 GLOBAL CLOUD NETWORK LLC	`12.42ms` from Krasnoyarsk, RU
90.206.234.71	AS5607 Sky UK Limited	`8.04ms` from London, GB
114.166.149.87	AS4713 NTT DOCOMO BUSINESS,Inc.	`2.58ms` from Osaka, JP
34.229.221.167	AS14618 Amazon.com, Inc.	`0.48ms` from Reston, US
14.74.74.199	AS4766 Korea Telecom	`3.98ms` from Seoul, KR
183.126.6.231	AS4766 Korea Telecom	`1.60ms` from Seoul, KR
20.15.126.215	AS8075 Microsoft Corporation	`0.29ms` from Boydton, US
105.154.232.215	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`11.74ms` from Casablanca, MA
98.121.206.71	AS11426 Charter Communications Inc	`7.37ms` from Charlotte, US
98.32.138.183	AS7922 Comcast Cable Communications, LLC	`5.83ms` from Chicago, US
113.252.192.199	AS9304 HGC Global Communications Limited	`1.44ms` from Hong Kong, HK
188.60.43.55	AS3303 Swisscom (Switzerland) Ltd	`0.71ms` from Lausanne, CH
194.37.98.7	AS9009 M247 Europe SRL	`0.14ms` from Manchester, GB
73.85.126.247	AS7922 Comcast Cable Communications, LLC	`5.89ms` from Miami, US
67.215.102.7	AS18895 Nustream Communications	`0.28ms` from San Juan, PR
189.230.166.231	AS8151 UNINET	`15.65ms` from Santiago de Queretaro, MX
112.159.161.199	AS17858 LG POWERCOMM	`1.88ms` from Seoul, KR
120.125.85.151	AS1659 Taiwan Academic Network (TANet) Information Center	`2.60ms` from Taipei, TW
20.121.178.87	AS8075 Microsoft Corporation	`0.38ms` from Ashburn, US

Traceroute

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

traceroute -a -n -q1 -f3 221.120.42.50

traceroute to 221.120.42.50 (221.120.42.50): 64 hops max, 52 byte packets

3 [AS3462] 210.65.126.145 1.44 ms

4 [] 211.79.32.217 5.604 ms

5 [AS17421] 221.120.42.50 16.322 ms

Measurement taken from

IPinfo ProbeNet in Taichung, TW

On November 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.

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