101.99.21.0/24

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:        101.99.0.0 - 101.99.63.255
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 [email protected]
mnt-by:         MAINT-VN-VNNIC
mnt-lower:      MAINT-VN-VNNIC
mnt-irt:        IRT-VNNIC-AP
last-modified:  2023-08-31T04:57:19Z
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:          101.99.0.0/18
descr:          CMCTELECOM-VN
origin:         AS45903
mnt-by:         MAINT-VN-VNNIC
last-modified:  2022-09-19T02:30:34Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 101.99.0.0/16

Range	ASN	Company	Num of IPs
101.99.128.0/17	AS3605	Kuentos Communications, Inc.	32,768
101.99.64.0/24	AS45839	Shinjiru Technology Sdn. Bhd.	256

Hosted domains

There is 1 domain name hosted across 1 IP address 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

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Pingable IPs

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

IP Address	ASN	Details
101.99.21.147	AS45903 CMC Telecom Infrastructure Company	`0.91ms` 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
100.21.251.168	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
76.183.3.8	AS11427 Charter Communications Inc	`6.19ms` from Dallas, US
81.32.236.216	AS3352 TELEFONICA DE ESPANA S.A.U.	`3.79ms` from Madrid, ES
129.121.6.24	AS46606 Unified Layer	`1.96ms` from Salt Lake City, US
186.176.61.152	AS262197 MILLICOM CABLE COSTA RICA S.A.	`8.11ms` from San Pedro, CR
124.194.248.24	AS3786 LG DACOM Corporation	`2.71ms` from Seoul, KR
58.225.109.248	AS9318 SK Broadband Co Ltd	`2.50ms` from Seoul, KR
65.186.52.232	AS10796 Charter Communications Inc	`16.91ms` from Toronto, CA
34.65.144.232	AS396982 Google LLC	`0.10ms` from Zuerich, CH
1.4.245.200	AS23969 TOT Public Company Limited	`9.53ms` from Bangkok, TH
187.64.72.152	AS28573 Claro NXT Telecomunicacoes Ltda	`19.89ms` from Fortaleza, BR
45.91.53.216	AS44559 IT HOSTLINE LTD	`0.18ms` from Helsinki, FI
174.44.12.40	AS6128 Cablevision Systems Corp.	`3.29ms` from Piscataway, US
110.35.18.152	AS38684 CMB Daejeon Broadcasting Co,.Ltd	`6.94ms` from Seoul, KR
218.154.104.24	AS4766 Korea Telecom	`6.75ms` from Seoul, KR
58.107.239.216	AS4804 Microplex PTY LTD	`1.70ms` from Sydney, AU
124.86.44.136	AS4713 NTT DOCOMO BUSINESS,Inc.	`2.90ms` from Tokyo, JP
195.181.90.104	AS58224 Iran Telecommunication Company PJS	`18.00ms` from Yerevan, AM
86.90.13.136	AS1136 KPN B.V.	`1.34ms` from Amsterdam, NL
4.175.57.24	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
9.163.214.184	AS8075 Microsoft Corporation	`0.27ms` from Amsterdam, NL
83.212.233.72	AS5408 National Infrastructures for Research and Technology S.A.	`1.51ms` from Athens, GR
75.248.70.232	AS6167 Verizon Business	`18.59ms` from Atlanta, US
71.132.35.232	AS55960 Beijing Guanghuan Xinwang Digital	`3.43ms` from Beijing, CN
79.205.28.168	AS3320 Deutsche Telekom AG	`7.89ms` from Frankfurt am Main, DE

Traceroute

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

traceroute -a -n -q1 101.99.21.105

traceroute to 101.99.21.105 (101.99.21.105): 64 hops max, 52 byte packets

1 [AS15169] 108.170.235.191 185.667 ms

2 *

3 *

4 [AS45903] 183.91.12.133 204.53 ms

5 [AS45903] 101.99.21.105 202.04 ms

Measurement taken from

IPinfo ProbeNet in Toronto, CA

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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