203.171.24.0/21

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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        NTTT1-AP
tech-c:         NTTT1-AP
auth:           # Filtered
mnt-by:         MAINT-VN-VNNIC
last-modified:  2025-11-17T23:08:34Z
source:         APNIC

person:         Hoang Viet Anh
address:        CMCTELECOM-VN
country:        VN
phone:          +84-366235766
e-mail:         [email protected]
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:         [email protected]
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

Nearby Ranges

BGP prefixes that overlap with 203.171.0.0/16

Range	ASN	Company	Num of IPs
203.171.128.0/19	AS2687	Asia Pacific Operations	8,192
203.171.32.0/19	AS18400	Xtreme Networks Limited,	8,192
203.171.160.0/19	AS17839	LG HelloVision Corp.	8,192
203.171.160.0/19	AS38091	LG HelloVision Corp.	8,192
203.171.192.0/20	AS133612	VODAFONE AUSTRALIA PTY LIMITED	4,096
203.171.8.0/21	AS9997	Suzuka Cable Co.,Ltd	2,048
203.171.212.0/22	AS10010	Hands,Inc.	1,024
203.171.248.0/22	AS16509	Amazon.com, Inc.	1,024
203.171.216.0/23	AS9341	PT Indonesia Comnets Plus	512
203.171.172.0/24	AS17839	HVBucheon	256
203.171.252.0/24	AS38235	Angkor Data Communication	256
203.171.253.0/24	AS38235	Angkor Data Communication	256
203.171.254.0/24	AS38235	Angkor Data Communication	256
203.171.255.0/24	AS38235	Angkor Data Communication	256
203.171.4.0/24	AS38605	Corporate Internet Presence	256
203.171.221.0/24	AS45298	PT. INTERLINK TECHNOLOGY	256
203.171.209.0/24	AS45573	HSBC EDPI Pvt Ltd.	256
203.171.220.0/24	AS45583	35 Grafton Street	256
203.171.223.0/24	AS4771	Auckland Grammar School	256
203.171.216.0/24	AS9341	PT Indonesia Comnets Plus	256
203.171.217.0/24	AS9341	PT Indonesia Comnets Plus	256
203.171.173.0/24	AS17839	HVEunpyeong	256
203.171.5.0/24	AS17756	Star Track Express Pty Limited	256

Hosted domains

There are 15,386 domain names hosted across 110 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.171.27.167	giadunga24h.site	3646
203.171.27.189	tuannm04.site	1803
203.171.31.120	dongphuclechien.vn	200
203.171.31.174	dpiz.vn	22
203.171.25.222	insoft.vn	10
203.171.28.49	ops.vin	5
203.171.29.206	ipetro.cloud	4
203.171.28.171	homebooking.global	3
203.171.29.186	hanacos.vn	2
203.171.31.159	barcodevietnam.com	2
203.171.29.137	piklab.vn	2
203.171.25.60	home.vn	2
203.171.26.249	stid.gov.vn	2
203.171.31.150	glorious546.com	2
203.171.29.150	lumislay.com	1
203.171.27.176	giadungnhaviet.site	1
203.171.29.123	tvo.org.vn	1
203.171.25.24	gautructruyenky.vn	1
203.171.27.182	levera.vn	1
203.171.27.188	botcake.io	1

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

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

IP Address	ASN	Details
203.171.31.1	AS45903 CMC Telecom Infrastructure Company	`1.35ms` from Ho Chi Minh City, VN
203.171.24.65	AS45903 CMC Telecom Infrastructure Company	`0.83ms` from Hanoi, VN
203.171.29.149	AS45903 CMC Telecom Infrastructure Company	`1.56ms` from Ho Chi Minh City, VN
203.171.26.154	AS45903 CMC Telecom Infrastructure Company	`0.82ms` from Hanoi, VN
203.171.30.36	AS45903 CMC Telecom Infrastructure Company	`1.11ms` from Hong Kong, HK
203.171.25.70	AS45903 CMC Telecom Infrastructure Company	`0.61ms` from Hanoi, VN
203.171.27.50	AS45903 CMC Telecom Infrastructure Company	`0.60ms` from Hanoi, VN
203.171.28.1	AS45903 CMC Telecom Infrastructure Company	`1.48ms` 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
96.38.252.53	AS20115 Charter Communications LLC	`5.66ms` from Atlanta, US
125.24.50.5	AS23969 TOT Public Company Limited	`12.55ms` from Bangkok, TH
46.253.20.5	AS34624 Megaspace Internet Services GmbH	`0.39ms` from Frankfurt am Main, DE
40.183.179.117	AS9009 M247 Europe SRL	`0.26ms` from New York City, US
126.48.10.165	AS17676 SoftBank Corp.	`2.56ms` from Osaka, JP
114.187.233.165	AS4713 NTT DOCOMO BUSINESS,Inc.	`17.91ms` from Osaka, JP
173.69.145.197	AS701 Verizon Business	`4.81ms` from Philadelphia, US
189.17.194.69	AS4230 CLARO S.A.	`1.65ms` from Rio de Janeiro, BR
190.215.181.53	AS18822 Manquehuenet	`1.36ms` from Santiago, CL
182.224.212.21	AS17858 LG POWERCOMM	`1.92ms` from Seoul, KR
84.228.231.181	AS12400 Partner Communications Ltd.	`3.23ms` from Tel Aviv, IL
108.91.56.229	AS7018 AT&T Enterprises, LLC	`1.90ms` from Atlanta, US
108.223.93.5	AS7018 AT&T Enterprises, LLC	`8.75ms` from Columbus, US
93.107.250.229	AS15502 Vodafone Ireland Limited	`2.54ms` from Dublin, IE
212.73.249.5	AS3356 Level 3 Parent, LLC	`0.41ms` from Frankfurt am Main, DE
27.152.83.117	AS4134 CHINANET-BACKBONE	`6.05ms` from Fuzhou, CN
46.22.249.197	AS42514 Signal Service LLC	`13.20ms` from Moscow, RU
58.215.73.213	AS23650 AS Number for CHINANET jiangsu province backbone	`3.16ms` from Nanjing, CN
92.127.80.245	AS12389 PJSC Rostelecom	`6.53ms` from Novosibirsk, RU
39.72.108.5	AS4837 CHINA UNICOM China169 Backbone	`3.76ms` from Qingdao, CN
77.241.108.213	AS8896 GLOBALCONNECT AS	`1.99ms` from Sandefjord, NO
154.251.183.21	AS36947 Telecom Algeria	`12.45ms` from Algiers, DZ
23.192.151.133	AS20940 Akamai International B.V.	`0.49ms` from Atlanta, US
43.209.235.197	AS16509 Amazon.com, Inc.	`2.02ms` from Bangkok, TH
134.185.181.229	AS54253 Oracle Corporation	`1.54ms` from Bangkok, TH

Traceroute

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

traceroute -a -n -q1 -f3 203.171.31.39

traceroute to 203.171.31.39 (203.171.31.39): 64 hops max, 52 byte packets

3 [AS3356] 171.75.8.214 24.457 ms

4 *

5 *

6 *

7 [AS45903] 203.171.31.39 233.74 ms

Measurement taken from

IPinfo ProbeNet in Warsaw, PL

On December 14th 2025

What are IP address ranges?

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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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