203.205.12.0/24

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

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	`1.36ms` 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
52.106.3.8	AS8075 Microsoft Corporation	`0.36ms` from Boydton, US
161.35.67.136	AS14061 DigitalOcean, LLC	`0.22ms` from Frankfurt am Main, DE
116.205.237.216	AS55990 Huawei Cloud Service data center	`1.50ms` from Guangzhou, CN
65.70.63.136	AS7018 AT&T Enterprises, LLC	`1.36ms` from Houston, US
86.163.116.184	AS2856 British Telecommunications PLC	`5.56ms` from London, GB
73.91.87.8	AS7922 Comcast Cable Communications, LLC	`9.67ms` from Miami, US
223.134.241.136	AS2527 Sony Network Communications Inc.	`2.47ms` from Osaka, JP
46.29.79.120	AS197235 AVANTEL SAMARA	`0.74ms` from Samara, RU
120.142.159.88	AS10036 DLIVE	`1.37ms` from Seoul, KR
111.250.69.184	AS3462 Data Communication Business Group	`2.51ms` from Taipei, TW
50.100.189.40	AS577 Bell Canada	`5.02ms` from Toronto, CA
85.54.158.72	AS12479 Orange Espagne SA	`12.98ms` from Zaragoza, ES
178.195.229.232	AS3303 Swisscom (Switzerland) Ltd	`0.68ms` from Zuerich, CH
105.107.49.248	AS36947 Telecom Algeria	`11.93ms` from Algiers, DZ
89.133.134.8	AS21334 One Hungary Ltd.	`5.13ms` from Budapest, HU
206.168.180.200	AS14726 Chisholm Broadband LLC	`6.69ms` from Dallas, US
43.157.13.56	AS132203 Tencent Building, Kejizhongyi Avenue	`0.35ms` from Frankfurt am Main, DE
5.61.35.88	AS28753 Leaseweb Deutschland GmbH	`0.57ms` from Frankfurt am Main, DE
84.159.25.56	AS3320 Deutsche Telekom AG	`8.30ms` from Frankfurt am Main, DE
4.185.194.136	AS8075 Microsoft Corporation	`0.28ms` from Frankfurt am Main, DE
125.119.164.56	AS4134 CHINANET-BACKBONE	`9.51ms` from Hangzhou, CN
90.192.158.24	AS5607 Sky UK Limited	`5.54ms` from London, GB
4.199.87.24	AS8075 Microsoft Corporation	`0.75ms` from Melbourne, AU
109.94.23.8	AS50009 QUARTZ TELECOM LLC	`1.02ms` from Moscow, RU
71.114.153.216	AS701 Verizon Business	`3.61ms` from Philadelphia, US

Traceroute

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

traceroute -a -n -q1 -f4 203.205.12.90

traceroute to 203.205.12.90 (203.205.12.90): 64 hops max, 52 byte packets

4 [AS3356] 4.68.37.114 20.877 ms

5 [AS3491] 63.218.174.66 255.684 ms

6 [AS3491] 63.220.192.235 201.281 ms

7 *

8 *

9 *

10 [AS45903] 203.205.12.90 235.186 ms

Measurement taken from

IPinfo ProbeNet in Budapest, HU

On December 20th 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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