1. All IP Ranges
  2. 203.0.0.0/8
  3. 203.171.0.0/16
  4. AS45903  | 203.171.21.0/24

203.171.21.0/24

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 93 domain names hosted across 34 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
203.171.21.120 thienminhcapital.com 42
203.171.21.27 goi4g.info 6
203.171.21.225 balans.vn 4
203.171.21.8 hodo.com.vn 4
203.171.21.214 hscstation.com 3
203.171.21.30 lfs.com.vn 2
203.171.21.76 austdoorgroup.info 2
203.171.21.62 techlabs.vn 2
203.171.21.148 leanow.vn 2
203.171.21.245 tip.com.vn 2
203.171.21.42 sohoaocop.com 1
203.171.21.52 flexhome.asia 1
203.171.21.91 ats.com.vn 1
203.171.21.33 anhoajsc.com 1
203.171.21.53 hiepnv.com 1
203.171.21.39 safegateti.tk 1
203.171.21.49 esico-ecommerce.com 1
203.171.21.29 theworldasweknow.com 1
203.171.21.92 longhung.com.vn 1
203.171.21.123 srp.vn 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

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

IP Address ASN Details
203.171.21.148 AS45903 CMC Telecom Infrastructure Company 0.89ms from Hanoi, 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
2.51.156.200 AS5384 Emirates Internet 4.25ms from Al Fujairah City, AE
131.173.93.72 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 9.49ms from Berlin, DE
180.251.72.56 AS7713 PT Telekomunikasi Indonesia 16.75ms from Jakarta, ID
109.159.234.232 AS2856 British Telecommunications PLC 0.74ms from London, GB
98.252.96.88 AS7922 Comcast Cable Communications, LLC 7.21ms from San Jose, US
35.233.173.168 AS396982 Google LLC 0.15ms from The Dalles, US
18.182.76.8 AS16509 Amazon.com, Inc. 0.17ms from Tokyo, JP
40.68.7.24 AS8075 Microsoft Corporation 0.26ms from Amsterdam, NL
52.41.57.104 AS16509 Amazon.com, Inc. 0.22ms from Boardman, US
179.36.101.88 AS22927 Telefonica de Argentina 17.56ms from Buenos Aires, AR
173.26.135.40 AS30036 Mediacom Communications Corp 14.04ms from Chicago, US
91.23.89.136 AS3320 Deutsche Telekom AG 4.12ms from Frankfurt am Main, DE
77.0.161.56 AS6805 Telefonica Germany GmbH & Co.OHG 2.32ms from Hamburg, DE
154.210.12.8 AS139811 ANLIAN NETWORK TECHNOLOGY CO., LIMITED 1.95ms from Hong Kong, HK
175.162.28.104 AS4837 CHINA UNICOM China169 Backbone 13.05ms from Liaoyang, CN
184.55.18.72 AS10796 Charter Communications Inc 9.65ms from Mount Prospect, US
51.15.179.24 AS12876 SCALEWAY S.A.S. 1.13ms from Paris, FR
49.171.65.24 AS17858 LG POWERCOMM 2.21ms from Seoul, KR
92.118.155.104 AS56642 TVNET2 Ltd 0.59ms from Sofia, BG
48.218.248.200 AS8075 Microsoft Corporation 0.15ms from Tokyo, JP
20.243.184.232 AS8075 Microsoft Corporation 0.20ms from Tokyo, JP
82.162.188.232 AS12389 PJSC Rostelecom 0.99ms from Vladivostok, RU
73.183.27.136 AS7922 Comcast Cable Communications, LLC 11.56ms from Ashburn, US
221.220.133.200 AS4808 China Unicom Beijing Province Network 3.40ms from Beijing, CN
87.64.175.8 AS5432 Proximus NV 3.94ms from Brussels, BE

Traceroute

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

$
traceroute -a -n -q1 -f3 203.171.21.184
traceroute to 203.171.21.184 (203.171.21.184): 64 hops max, 52 byte packets
3 [AS45903] 101.99.0.25 234.318 ms
4 [AS45903] 183.91.12.160 234.926 ms
5 [AS45903] 203.171.21.184 235.804 ms
Measurement taken from IPinfo ProbeNet in Paris, FR
On

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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