203.205.11.0/24

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:        203.205.0.0 - 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 17 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

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

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

IP Address	ASN	Details
203.205.11.130	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
73.174.9.232	AS7922 Comcast Cable Communications, LLC	`12.49ms` from Ashburn, US
8.40.52.88	AS23118 Skyline Telephone	`3.79ms` from Asheville, US
185.111.90.72	AS51013 WebSupport s.r.o.	`0.39ms` from Bratislava, SK
84.196.239.184	AS6848 Telenet BV	`7.12ms` from Brussels, BE
78.131.56.168	AS20845 DIGI Tavkozlesi es Szolgaltato Kft.	`0.58ms` from Budapest, HU
42.202.161.8	AS134762 CHINANET Liaoning province Dalian MAN network	`0.65ms` from Dalian, CN
82.165.146.40	AS8560 IONOS SE	`2.67ms` from Frankfurt am Main, DE
171.235.108.24	AS7552 Viettel Group	`4.68ms` from Ho Chi Minh City, VN
49.131.210.8	AS17924 SmarTone Mobile Communications Ltd	`11.45ms` from Hong Kong, HK
34.125.20.104	AS396982 Google LLC	`0.14ms` from Las Vegas, US
167.160.6.200	AS200845 AVATEL TELECOM, SA	`8.64ms` from Madrid, ES
80.24.165.184	AS3352 TELEFONICA DE ESPANA S.A.U.	`5.69ms` from Madrid, ES
176.189.102.136	AS5410 Bouygues Telecom SA	`8.84ms` from Marseille, FR
93.210.152.8	AS3320 Deutsche Telekom AG	`9.89ms` from Nuernberg, DE
150.31.72.120	AS2497 Internet Initiative Japan Inc.	`2.67ms` from Osaka, JP
90.26.153.24	AS3215 Orange S.A.	`8.32ms` from Paris, FR
187.63.173.120	AS28169 BITCOM PROVEDOR DE SERVICOS DE INTERNET LTDA	`2.35ms` from Porto Alegre, BR
4.201.81.232	AS8075 Microsoft Corporation	`0.20ms` from Sao Paulo, BR
49.247.6.56	AS38700 SMILESERV	`1.43ms` from Seoul, KR
121.139.155.248	AS4766 Korea Telecom	`1.44ms` from Seoul, KR
118.208.154.168	AS7545 TPG Telecom Limited	`1.75ms` from Brisbane, AU
78.146.83.216	AS13285 TalkTalk Communications Limited	`4.16ms` from London, GB
104.4.234.56	AS7018 AT&T Enterprises, LLC	`1.65ms` from Los Angeles, US
198.105.87.248	AS23089 Hotwire Communications	`3.77ms` from Miami, US
87.148.60.88	AS3320 Deutsche Telekom AG	`5.85ms` from Nuernberg, DE

Traceroute

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

traceroute -a -n -q1 -f3 203.205.11.105

traceroute to 203.205.11.105 (203.205.11.105): 64 hops max, 52 byte packets

3 [] 27.111.228.152 0.432 ms

4 [AS45903] 183.91.0.2 43.444 ms

5 [AS45903] 203.205.11.105 63.749 ms

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On December 14th 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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