203.205.12.0/24

AS45903 · CMC Telecom Infrastructure Company

Need more data or want to access it via API or data downloads? Sign up to get free access

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 no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
203.205.12.129	AS45903 CMC Telecom Infrastructure Company	`1.41ms` 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
170.223.6.40	AS40831 Mass General Brigham Incorporated	`11.16ms` from Ashburn, US
66.26.244.168	AS11426 Charter Communications Inc	`9.46ms` from Charlotte, US
76.107.125.56	AS7922 Comcast Cable Communications, LLC	`14.83ms` from Dallas, US
64.17.26.232	AS6653 Vero Broadband	`6.29ms` from Denver, US
185.165.251.168	AS29119 AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL	`8.19ms` from Madrid, ES
78.201.184.136	AS12322 Free SAS	`6.88ms` from Paris, FR
52.2.64.136	AS14618 Amazon.com, Inc.	`0.17ms` from Reston, US
80.76.135.248	AS30960 OOO Scientific-Production Center "Tetra"	`0.72ms` from Samara, RU
40.84.231.24	AS8075 Microsoft Corporation	`0.17ms` from San Antonio, US
49.50.165.200	AS135354 NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD.	`1.36ms` from Seoul, KR
78.28.58.120	AS44914 Petrus Spolka z ograniczona odpowiedzialnoscia	`11.28ms` from Warsaw, PL
34.150.222.248	AS396982 Google LLC	`0.14ms` from Ashburn, US
89.152.113.200	AS2860 NOS COMUNICACOES, S.A.	`7.58ms` from Braga, PT
84.192.92.216	AS6848 Telenet BV	`7.33ms` from Brussels, BE
134.68.75.232	AS87 Indiana University	`4.13ms` from Chicago, US
91.10.81.72	AS3320 Deutsche Telekom AG	`5.83ms` from Duesseldorf, DE
18.184.16.216	AS16509 Amazon.com, Inc.	`0.16ms` from Frankfurt am Main, DE
116.109.165.104	AS24086 Viettel Corporation	`5.64ms` from Ho Chi Minh City, VN
221.201.177.40	AS4837 CHINA UNICOM China169 Backbone	`9.70ms` from Liaoyang, CN
79.224.205.216	AS3320 Deutsche Telekom AG	`5.65ms` from Nuernberg, DE
126.237.162.104	AS17676 SoftBank Corp.	`3.39ms` from Tokyo, JP
106.194.54.120	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`1.89ms` from Ahmedabad, IN
223.27.211.168	AS38794 UIH	`0.78ms` from Bangkok, TH
76.184.217.232	AS11427 Charter Communications Inc	`5.29ms` from Dallas, US
134.228.53.104	AS13490 Buckeye Cablevision, Inc.	`9.12ms` from Detroit, 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 203.205.12.113

traceroute to 203.205.12.113 (203.205.12.113): 64 hops max, 52 byte packets

3 [AS29357] 217.69.180.72 267.075 ms

4 *

5 *

6 *

7 [] 27.111.228.152 156.865 ms

8 [AS45903] 203.205.56.111 264.442 ms

9 [AS45903] 203.205.12.113 308.586 ms

Measurement taken from

IPinfo ProbeNet in Kuwait City, KW

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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales