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:         [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:          203.205.0.0/18
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
203.205.18.77	cemcem.online	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

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

IP Address	ASN	Details
203.205.17.226	AS45903 CMC Telecom Infrastructure Company	`0.68ms` from Hanoi, VN
203.205.18.86	AS45903 CMC Telecom Infrastructure Company	`0.85ms` from Hanoi, VN
203.205.16.12	AS45903 CMC Telecom Infrastructure Company	`0.64ms` 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
13.33.224.6	AS16509 Amazon.com, Inc.	`0.29ms` from Ashburn, US
149.200.5.182	AS5483 Magyar Telekom Plc.	`7.06ms` from Budapest, HU
173.183.243.182	AS852 TELUS Communications Inc.	`0.83ms` from Calgary, CA
64.63.129.230	AS53828 NETWORK INNOVATIONS, LLC	`0.18ms` from Chicago, US
96.79.210.6	AS7922 Comcast Cable Communications, LLC	`5.10ms` from Denver, US
213.185.49.134	AS30798 TNNet Oy	`11.59ms` from Helsinki, FI
32.132.164.198	AS7018 AT&T Enterprises, LLC	`2.11ms` from Miami, US
70.89.23.134	AS7922 Comcast Cable Communications, LLC	`7.09ms` from New York City, US
96.86.214.230	AS7922 Comcast Cable Communications, LLC	`8.69ms` from Salt Lake City, US
159.112.181.134	AS31898 Oracle Corporation	`0.29ms` from Sao Paulo, BR
119.75.116.246	AS17854 SK Broadband Co Ltd	`5.05ms` from Seoul, KR
220.77.117.102	AS4766 Korea Telecom	`6.34ms` from Seoul, KR
24.235.155.22	AS7992 Cogeco Connexion Inc.	`8.31ms` from Toronto, CA
37.79.193.102	AS12389 PJSC Rostelecom	`0.93ms` from Yekaterinburg, RU
147.102.111.6	AS3323 National Technical University of Athens	`1.77ms` from Athens, GR
60.25.205.6	AS4837 CHINA UNICOM China169 Backbone	`5.54ms` from Beijing, CN
196.119.198.38	AS36925 MEDITELECOM	`3.98ms` from Casablanca, MA
135.119.81.166	AS8075 Microsoft Corporation	`0.19ms` from Des Moines, US
35.159.238.134	AS16509 Amazon.com, Inc.	`0.35ms` from Frankfurt am Main, DE
20.170.71.230	AS8075 Microsoft Corporation	`0.35ms` from Frankfurt am Main, DE
39.45.130.22	AS17557 Pakistan Telecommunication Company Limited	`7.46ms` from Lahore, PK
96.39.254.182	AS20115 Charter Communications LLC	`6.17ms` from Los Angeles, US
34.54.232.166	AS396982 Google LLC	`0.07ms` from Melbourne, AU
122.94.207.118	AS56046 China Mobile communications corporation	`6.77ms` from Nanjing, CN
46.180.60.70	AS39927 E-Light-Telecom Ltd.	`4.48ms` from Novosibirsk, RU

Traceroute

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

traceroute -a -n -q1 203.205.17.137

traceroute to 203.205.17.137 (203.205.17.137): 64 hops max, 52 byte packets

1 [AS15169] 108.170.235.191 238.954 ms

2 *

3 [AS45903] 203.205.17.137 239.366 ms

Measurement taken from

IPinfo ProbeNet in Madrid, ES

On December 6th 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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