203.171.28.0/23

AS45903 · CMC Telecom Infrastructure Company

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Summary

Country	Vietnam
Domain	cmctelecom.vn
ASN	AS45903
Registry	APNIC
ID	CMCTELECOM-VN

WHOIS Details

inetnum:        203.171.16.0 - 203.171.31.255
netname:        CMCTELECOM-VN
country:        VN
descr:          CMC Telecom Infrastructure Company
descr:          CMC Tower,Duy Tan, Dich Vong Hau, Cau Giay, Ha Noi
admin-c:        HVA2-AP
tech-c:         NVH31-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-VN-VNNIC
mnt-irt:        IRT-VNNIC-AP
last-modified:  2023-08-31T05:01:31Z
source:         APNIC

irt:            IRT-VNNIC-AP
address:        Ha Noi, VietNam
phone:          +84-24-35564944
fax-no:         +84-24-37821462
e-mail:         hm-changed@vnnic.vn
abuse-mailbox:  hm-changed@vnnic.vn
admin-c:        NTTT1-AP
tech-c:         NTTT1-AP
auth:           # Filtered
mnt-by:         MAINT-VN-VNNIC
last-modified:  2025-09-04T05:18:22Z
source:         APNIC

person:         Hoang Viet Anh
address:        CMCTELECOM-VN
country:        VN
phone:          +84-366235766
e-mail:         anh.hv@cmctelecom.vn
nic-hdl:        HVA2-AP
mnt-by:         MAINT-VN-VNNIC
last-modified:  2023-08-31T04:22:33Z
source:         APNIC

person:         Nguyen Van Hieu
address:        CMCTELECOM-VN
country:        VN
phone:          +84-968189689
e-mail:         hieu.nv@cmctelecom.vn
nic-hdl:        NVH31-AP
mnt-by:         MAINT-VN-VNNIC
last-modified:  2022-08-28T04:27:35Z
source:         APNIC

route:          203.171.16.0/20
descr:          CMCTELECOM-VN
origin:         AS45903
mnt-by:         MAINT-VN-VNNIC
last-modified:  2022-09-16T17:39:37Z
source:         APNIC

Hosted domains

There are 163 domain names hosted across 44 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.171.29.49	daphongthuyso1vietnam.com	52
203.171.29.227	finan.me	18
203.171.28.96	xeluot247.com	12
203.171.28.8	ames.vn	7
203.171.29.206	smartpetro.co	4
203.171.29.140	hanngutrankien.edu.vn	3
203.171.28.7	3khoe.com	3
203.171.29.106	hanet.ai	2
203.171.29.54	tuanviet.com.vn	1
203.171.29.7	duonganh.net	1
203.171.29.159	minhht.com.vn	1
203.171.29.85	giaoduc.edu.vn	1
203.171.28.176	compass247.vn	1
203.171.28.36	pvoilsgketnoinganhang.com	1
203.171.28.153	congdoanquantanbinh.org.vn	1

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
203.171.28.1	AS45903 CMC Telecom Infrastructure Company	`1.42ms` from Ho Chi Minh City, VN
203.171.29.21	AS45903 CMC Telecom Infrastructure Company	`1.54ms` from Ho Chi Minh City, VN

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
103.92.141.39	AS7600 Escape.net	`2.63ms` from Brisbane, AU
185.241.154.135	AS214401 maincubes one GmbH	`0.37ms` from Frankfurt am Main, DE
106.52.179.103	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.69ms` from Guangzhou, CN
78.162.191.119	AS9121 Turk Telekomunikasyon Anonim Sirketi	`8.97ms` from Istanbul, TR
41.30.65.119	AS29975 Vodacom	`12.73ms` from Johannesburg, ZA
216.58.230.71	AS17378 TierPoint, LLC	`4.60ms` from Kansas City, US
113.6.156.135	AS4837 CHINA UNICOM China169 Backbone	`16.33ms` from Liaoyang, CN
86.155.78.71	AS2856 British Telecommunications PLC	`6.49ms` from London, GB
120.156.192.7	AS1221 Telstra Limited	`5.82ms` from Melbourne, AU
165.230.135.215	AS46 Rutgers, The State University	`2.38ms` from New York City, US
185.251.133.151	AS213668 MINDBAZ SAS	`0.66ms` from Paris, FR
98.66.180.71	AS8075 Microsoft Corporation	`0.28ms` from Paris, FR
173.243.137.7	AS40934 Fortinet Inc.	`3.77ms` from Seattle, US
119.218.207.151	AS4766 Korea Telecom	`6.37ms` from Seoul, KR
38.85.171.151	AS398721 OXIO	`15.92ms` from Toronto, CA
162.249.4.215	AS55293 A2 Hosting, Inc.	`0.08ms` from Detroit, US
79.221.20.55	AS3320 Deutsche Telekom AG	`6.25ms` from Frankfurt am Main, DE
217.26.190.247	AS399382 MULTI	`0.24ms` from Lima, PE
99.109.81.151	AS7018 AT&T Enterprises, LLC	`9.40ms` from Los Angeles, US
81.126.65.23	AS3269 Telecom Italia S.p.A.	`1.63ms` from Milan, IT
79.34.196.231	AS3269 Telecom Italia S.p.A.	`14.64ms` from Milan, IT
200.219.207.119	AS15830 Equinix (EMEA) Acquisition Enterprises B.V.	`0.63ms` from Osasco, BR
88.125.162.215	AS12322 Free SAS	`2.25ms` from Paris, FR
44.249.127.215	AS16509 Amazon.com, Inc.	`4.55ms` from Portland, US
75.216.123.231	AS6167 Verizon Business	`15.22ms` from Providence, US

Traceroute

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

traceroute -a -n -q1 203.171.28.61

traceroute to 203.171.28.61 (203.171.28.61): 64 hops max, 52 byte packets

1 [AS15169] 64.233.174.23 0.95 ms

2 *

3 [AS45903] 203.205.56.109 30.478 ms

4 [AS45903] 203.205.56.152 37.594 ms

5 *

6 *

7 [AS45903] 203.171.28.61 31.162 ms

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On September 4th 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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