203.77.64.0/21

AS24164 · UNION BROADBAND NETWORK

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Summary

Country	Taiwan
Domain	taiwanmobile.com
ASN	AS24164
Registry	TWNIC
ID	TFN-NET

WHOIS Details

inetnum:        203.77.64.0 - 203.77.127.255
netname:        TFN-NET
descr:          Taiwan Fixed Network CO.,LTD.
descr:          15 F., No. 172-1, Sec. 2, Keelung Rd., Da-an Dist.
descr:          Taipei City Taiwan
country:        TW
admin-c:        L369-TW
tech-c:         L369-TW
mnt-by:         MAINT-TW-TWNIC
changed:        nickchang@taiwanmobile.com 20200818
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:         Hans Liu
address:        System Design Div.
address:        12th Floor, No. 88, Yanchang Road, Xinyi District
address:        Taipei  Taiwan
country:        TW
phone:          +886-9-5393-1934
fax-no:
e-mail:         hansliu@taiwanmobile.com
nic-hdl:        L369-TW
changed:        hostmaster@twnic.net 20210602
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 203.77.0.0/16

Range	ASN	Company	Num of IPs
203.77.32.0/19	AS24165	Taiwan Fixed Network CO.,LTD.	8,192
203.77.32.0/19	AS24164	Taiwan Fixed Network CO.,LTD.	8,192
203.77.128.0/19	AS9660	Kannet Limited	8,192
203.77.32.0/19	AS9924	Taiwan Fixed Network CO.,LTD.	8,192
203.77.168.0/21	AS153526	Laos Mobile Communications Sole Co., Ltd	2,048
203.77.177.0/24	AS24558	Internet Hosting Service Provider to the Aditya Birla Group of	256
203.77.179.0/24	AS9942	TPG Internet Pty Ltd.	256
203.77.218.0/24	AS18393	DANA Network	256
203.77.221.0/24	AS18393	Matrix Indo, PT	256
203.77.178.0/24	AS24174	Vikki Digital Bank Limited	256
203.77.176.0/24	AS24509	Xpedite Systems, Electronic document distribution and data messaging service provider.	256

Hosted domains

There is 1 domain name 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

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

IP Address	ASN	Details
203.77.69.1	AS24164 UNION BROADBAND NETWORK	`1.43ms` from Taipei, TW
203.77.70.126	AS9924 Taiwan Fixed Network, Telco and Network Service Provider.	`0.54ms` from Taipei, TW
203.77.65.29	AS24164 UNION BROADBAND NETWORK	`8.71ms` from Taipei, TW
203.77.68.1	AS24164 UNION BROADBAND NETWORK	`1.06ms` from Taipei, TW
203.77.64.1	AS24164 UNION BROADBAND NETWORK	`1.67ms` 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
75.130.143.37	AS20115 Charter Communications LLC	`9.24ms` from Atlanta, US
73.119.85.213	AS7922 Comcast Cable Communications, LLC	`5.24ms` from Boston, US
192.182.17.149	AS5650 Frontier Communications of America, Inc.	`5.11ms` from Chicago, US
147.75.45.53	AS54825 Packet Host, Inc.	`0.19ms` from Dallas, US
80.130.41.69	AS3320 Deutsche Telekom AG	`3.42ms` from Duesseldorf, DE
106.55.31.213	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.19ms` from Guangzhou, CN
123.164.8.5	AS4134 CHINANET-BACKBONE	`15.11ms` from Harbin, CN
119.28.53.245	AS132203 Tencent Building, Kejizhongyi Avenue	`0.36ms` from Hong Kong, HK
43.248.173.21	AS4907 BGPNET PTE. LTD.	`1.00ms` from Hong Kong, HK
107.174.125.149	AS36352 HostPapa	`0.31ms` from Los Angeles, US
138.4.154.149	AS766 RedIRIS Autonomous System	`1.44ms` from Madrid, ES
34.54.90.197	AS396982 Google LLC	`0.07ms` from Melbourne, AU
223.84.13.5	AS56045 China Mobile communications corporation	`6.02ms` from Nanchang, CN
221.226.6.117	AS4134 CHINANET-BACKBONE	`1.07ms` from Nanjing, CN
115.203.249.133	AS4134 CHINANET-BACKBONE	`9.75ms` from Ningbo, CN
4.35.214.117	AS3356 Level 3 Parent, LLC	`0.56ms` from Orlando, US
176.144.79.101	AS5410 Bouygues Telecom SA	`2.70ms` from Paris, FR
73.98.149.85	AS7922 Comcast Cable Communications, LLC	`9.31ms` from Salt Lake City, US
187.17.171.245	AS28263 VERO S.A	`9.51ms` from Sao Paulo, BR
219.59.80.117	AS17676 SoftBank Corp.	`5.14ms` from Tokyo, JP
44.231.4.181	AS16509 Amazon.com, Inc.	`0.12ms` from Boardman, US
186.129.82.213	AS22927 Telefonica de Argentina	`2.53ms` from Buenos Aires, AR
138.0.202.5	AS28343 UNIFIQUE TELECOMUNICACOES S/A	`5.48ms` from Curitiba, BR
185.66.145.69	AS204832 Data Hub Integrated Solutions Moro LLC	`4.93ms` from Dubai, AE
93.205.84.53	AS3320 Deutsche Telekom AG	`4.71ms` from Duesseldorf, DE

Traceroute

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

traceroute -a -n -q1 -f2 -m9 203.77.66.78

traceroute to 203.77.66.78 (203.77.66.78): 9 hops max, 52 byte packets

2 [AS9002] 87.245.227.54 12.203 ms

3 [AS9002] 87.245.234.187 225.349 ms

4 *

5 [AS9924] 60.199.47.89 282.321 ms

6 [AS9924] 60.199.47.126 255.49 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Madrid, ES

On January 30th 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.

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