203.205.16.0/22

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:        203.205.0.0 - 203.205.63.255
netname:        CMCTELECOM-VN
descr:          CMC Telecom Infrastructure Company
descr:          CMC Tower,Cluster Handicraft Production andSmall Industry, Cau Giay, Hanoi, Vietnam
country:        VN
admin-c:        HVA2-AP
tech-c:         NVH31-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-VN-VNNIC
mnt-irt:        IRT-VNNIC-AP
last-modified:  2023-08-31T05:01:55Z
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:  2025-11-17T23:08:34Z
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:          203.205.0.0/18
descr:          CMCTELECOM-VN
origin:         AS45903
mnt-by:         MAINT-VN-VNNIC
last-modified:  2022-09-19T02:33:28Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.205.0.0/16

Range	ASN	Company	Num of IPs
203.205.64.0/19	AS58519	CHINANET Guangdong province network	8,192
203.205.96.0/20	AS18092	Kyushu Tele Communications Company	4,096
203.205.112.0/20	AS2914	NTT Ltd Japan Corporation	4,096

Hosted domains

There are 12 domain names hosted across 6 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.205.18.81	func.vn	3

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

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

IP Address	ASN	Details
203.205.18.71	AS45903 CMC Telecom Infrastructure Company	`0.85ms` from Hanoi, VN
203.205.17.226	AS45903 CMC Telecom Infrastructure Company	`0.70ms` from Hanoi, VN
203.205.16.5	AS45903 CMC Telecom Infrastructure Company	`0.66ms` 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
213.144.233.6	AS28685 Routit BV	`0.67ms` from Amsterdam, NL
147.102.111.6	AS3323 National Technical University of Athens	`1.80ms` from Athens, GR
34.79.82.166	AS396982 Google LLC	`0.13ms` from Brussels, BE
200.17.142.182	AS1916 Rede Nacional de Ensino e Pesquisa	`3.22ms` from Campina Grande, BR
73.8.89.6	AS7922 Comcast Cable Communications, LLC	`4.89ms` from Chicago, US
72.144.66.214	AS8075 Microsoft Corporation	`0.28ms` from Frankfurt am Main, DE
120.253.67.166	AS9808 China Mobile Communications Group Co., Ltd.	`10.45ms` from Lanzhou, CN
199.27.189.6	AS29838 Atlantic Metro Communications II, Inc.	`0.50ms` from New York City, US
178.70.7.86	AS12389 PJSC Rostelecom	`2.54ms` from Saint Petersburg, RU
109.177.146.54	AS5384 Emirates Internet	`3.39ms` from Al Fujairah City, AE
71.31.77.182	AS7029 Windstream Communications LLC	`7.85ms` from Atlanta, US
44.254.39.214	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
3.32.97.214	AS8987 Amazon Data Services Ireland Ltd	`0.33ms` from Boardman, US
52.247.161.6	AS8075 Microsoft Corporation	`0.57ms` from Boydton, US
98.5.191.102	AS11351 Charter Communications Inc	`18.00ms` from Chicago, US
81.31.30.54	AS3257 GTT Communications Inc.	`0.60ms` from Frankfurt am Main, DE
91.23.194.198	AS3320 Deutsche Telekom AG	`8.20ms` from Frankfurt am Main, DE
20.170.71.230	AS8075 Microsoft Corporation	`0.33ms` from Frankfurt am Main, DE
97.120.232.182	AS209 CenturyLink Communications, LLC	`1.16ms` from Hillsboro, US
31.206.38.6	AS15924 Vodafone Net Iletisim Hizmetler AS	`1.46ms` from Istanbul, TR
79.168.248.246	AS2860 NOS COMUNICACOES, S.A.	`5.23ms` from Lisbon, PT
87.218.192.54	AS12479 Orange Espagne SA	`11.47ms` from Madrid, ES
82.68.139.102	AS13037 Zen Internet Ltd	`1.74ms` from Manchester, GB
76.153.111.6	AS7922 Comcast Cable Communications, LLC	`5.54ms` from Miami, US
68.69.238.246	AS15267 702 Communications	`6.20ms` from Minneapolis, 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 203.205.16.15

traceroute to 203.205.16.15 (203.205.16.15): 64 hops max, 52 byte packets

3 [AS9583] 103.231.152.250 0.348 ms

4 [AS45903] 101.99.0.25 53.725 ms

5 [AS45903] 183.91.12.160 54.049 ms

6 [AS45903] 203.205.16.15 54.536 ms

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On December 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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