203.205.16.0/24

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 no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
203.205.16.4	AS45903 CMC Telecom Infrastructure Company	`0.67ms` 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
193.123.39.248	AS31898 Oracle Corporation	`0.14ms` from Amsterdam, NL
57.153.177.216	AS8075 Microsoft Corporation	`1.32ms` from Amsterdam, NL
3.30.23.232	AS8987 Amazon Data Services Ireland Ltd	`0.32ms` from Boardman, US
126.219.204.24	AS17676 SoftBank Corp.	`3.69ms` from Osaka, JP
124.150.229.40	AS7679 QTnet,Inc.	`8.54ms` from Osaka, JP
69.145.12.152	AS33588 Charter Communications LLC	`18.94ms` from Seattle, US
61.75.150.72	AS4766 Korea Telecom	`6.63ms` from Seoul, KR
58.117.185.248	AS4847 China Networks Inter-Exchange	`4.73ms` from Tianjin, CN
106.166.234.72	AS2516 KDDI CORPORATION	`4.90ms` from Tokyo, JP
101.241.237.184	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`8.90ms` from Beijing, CN
87.145.52.24	AS3320 Deutsche Telekom AG	`4.65ms` from Duesseldorf, DE
36.67.129.136	AS7713 PT Telekomunikasi Indonesia	`0.68ms` from Jakarta, ID
86.177.247.168	AS2856 British Telecommunications PLC	`2.19ms` from London, GB
207.233.79.24	AS2152 CENIC	`2.67ms` from Los Angeles, US
176.56.210.56	AS59437 Northern Data AG	`1.97ms` from Manchester, GB
37.9.66.136	AS13238 YANDEX LLC	`11.41ms` from Minsk, BY
191.121.217.184	AS26615 TIM S/A	`18.61ms` from Osasco, BR
54.85.248.136	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
179.210.115.184	AS28573 Claro NXT Telecomunicacoes Ltda	`9.56ms` from Rio de Janeiro, BR
203.229.200.56	AS4766 Korea Telecom	`2.12ms` from Seoul, KR
42.159.158.104	AS58593 Shanghai Blue Cloud Technology Co.,Ltd	`2.42ms` from Shanghai, CN
18.178.189.168	AS16509 Amazon.com, Inc.	`0.19ms` from Tokyo, JP
91.235.180.152	AS59533 Lukyanov Evgeniy Vladimirovich PE	`9.83ms` from Yekaterinburg, RU
195.155.229.24	AS34984 Superonline Iletisim Hizmetleri A.S.	`10.51ms` from Ankara, TR
69.243.237.24	AS7922 Comcast Cable Communications, LLC	`9.30ms` from Atlanta, US

Traceroute

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

traceroute -a -n -q1 203.205.16.21

traceroute to 203.205.16.21 (203.205.16.21): 64 hops max, 52 byte packets

1 [AS15169] 108.170.235.191 174.413 ms

2 *

3 [AS45903] 101.99.0.26 225.051 ms

4 [AS45903] 183.91.12.160 237.179 ms

5 [AS45903] 203.205.16.21 237.956 ms

Measurement taken from

IPinfo ProbeNet in Dallas, US

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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