183.91.20.0/23

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:        183.91.0.0 - 183.91.31.255
netname:        CMCTELECOM-VN
descr:          CMC Telecom Infrastructure Company
descr:          CMC Tower, Duy Tan, Cau Giay, Hanoi, Vietnam
country:        VN
admin-c:        HVA2-AP
tech-c:         NVH31-AP
status:         ALLOCATED PORTABLE
remarks:        send spam and abuse report to inoc@cmctelecom.vn
mnt-by:         MAINT-VN-VNNIC
mnt-lower:      MAINT-VN-VNNIC
mnt-routes:     MAINT-VN-VNNIC
mnt-irt:        IRT-VNNIC-AP
last-modified:  2023-08-31T05:00:45Z
source:         APNIC

irt:            IRT-VNNIC-AP
address:        Ha Noi, VietNam
phone:          +84-24-35564944
fax-no:         +84-24-37821462
e-mail:         hm-changed@vnnic.vn
abuse-mailbox:  hm-changed@vnnic.vn
admin-c:        NTTT1-AP
tech-c:         NTTT1-AP
auth:           # Filtered
mnt-by:         MAINT-VN-VNNIC
last-modified:  2025-09-04T05:18:22Z
source:         APNIC

person:         Hoang Viet Anh
address:        CMCTELECOM-VN
country:        VN
phone:          +84-366235766
e-mail:         anh.hv@cmctelecom.vn
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:         hieu.nv@cmctelecom.vn
nic-hdl:        NVH31-AP
mnt-by:         MAINT-VN-VNNIC
last-modified:  2022-08-28T04:27:35Z
source:         APNIC

route:          183.91.0.0/19
descr:          CMCTELECOM-VN
origin:         AS45903
mnt-by:         MAINT-VN-VNNIC
last-modified:  2022-09-19T02:31:42Z
source:         APNIC

Hosted domains

There are 6 domain names hosted across 5 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

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

IP Address	ASN	Details
183.91.21.193	AS45903 CMC Telecom Infrastructure Company	`1.34ms` from Ho Chi Minh City, VN
183.91.20.101	AS45903 CMC Telecom Infrastructure Company	`1.35ms` 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
94.70.92.71	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`7.23ms` from Athens, GR
34.123.168.167	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
115.225.250.7	AS4134 CHINANET-BACKBONE	`7.14ms` from Hangzhou, CN
38.249.143.167	AS135357 HONG KONG KOWLOON TELECOMMUNICATIONS CO.,LIMITED	`1.46ms` from Hong Kong, HK
58.178.99.167	AS9443 Vocus Retail	`2.34ms` from Melbourne, AU
60.167.7.183	AS4134 CHINANET-BACKBONE	`7.79ms` from Nanchang, CN
2.62.202.71	AS12389 PJSC Rostelecom	`6.76ms` from Novosibirsk, RU
15.229.169.199	AS16509 Amazon.com, Inc.	`0.13ms` from Osasco, BR
189.78.132.23	AS27699 TELEFÔNICA BRASIL S.A	`4.28ms` from Osasco, BR
14.80.216.247	AS4766 Korea Telecom	`7.16ms` from Seoul, KR
31.192.11.23	AS49129 LTD CGC Co	`1.10ms` from Tbilisi, GE
2.85.173.167	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`7.98ms` from Athens, GR
71.91.169.71	AS20115 Charter Communications LLC	`6.26ms` from Dallas, US
87.190.38.87	AS3320 Deutsche Telekom AG	`13.77ms` from Frankfurt am Main, DE
27.155.103.167	AS133774 Fuzhou	`0.24ms` from Fuzhou, CN
40.74.121.167	AS8075 Microsoft Corporation	`0.19ms` from Osaka, JP
191.19.23.119	AS27699 TELEFÔNICA BRASIL S.A	`4.00ms` from Osasco, BR
67.168.140.87	AS7922 Comcast Cable Communications, LLC	`4.25ms` from Seattle, US
121.169.2.215	AS4766 Korea Telecom	`1.28ms` from Seoul, KR
37.139.128.183	AS44477 PQ HOSTING PLUS S.R.L.	`0.60ms` from Amsterdam, NL
199.134.201.183	AS4152 USDA	`1.25ms` from Ashburn, US
194.63.198.87	AS8248 Computer Technology Institute and Press Diophantus	`12.09ms` from Athens, GR
34.22.165.71	AS396982 Google LLC	`0.16ms` from Brussels, BE
67.140.81.199	AS7029 Windstream Communications LLC	`12.60ms` from Chicago, US
76.20.157.119	AS7922 Comcast Cable Communications, LLC	`7.43ms` from Flint, US

Traceroute

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

traceroute -a -n -q1 183.91.20.57

traceroute to 183.91.20.57 (183.91.20.57): 64 hops max, 52 byte packets

1 [AS15169] 72.14.232.209 14.805 ms

2 *

3 [AS45903] 203.205.56.109 109.198 ms

4 [AS45903] 183.91.20.57 67.881 ms

Measurement taken from

IPinfo ProbeNet in Jakarta, ID

On September 5th 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