ASN AS38733 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS38733?

AS38733 is listed under CMC Telecom Infrastructure Company.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS38733 CMC Telecom Infrastructure Company

CMC Telecom Infrastructure Company cmctelecom.vn

VN 43 Routes

AS Data

AS38733

AS38733 – CMC Telecom Infrastructure Company

AS Number	38733
AS Name	CMCTELECOM-VN
Organization	CMC Telecom Infrastructure Company
Country	VN
Website	cmctelecom.vn
Number of IPv4 Routes	34
Number of IPv6 Routes	9
ASN type	ISP
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS38733 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2401:9320::/48	AS38733	CMC Telecom Infrastructure Company	DDL Digital Technology Solutions Company Limited	~1×10²⁴
2402:5300:4020::/48	AS38733	CMC Telecom Infrastructure Company	CMC Telecom Infrastructure Company	~1×10²⁴
115.165.164.0/24	AS38733	CMC Telecom Infrastructure Company	CMC Telecom Infrastructure Company	256
42.96.37.0/24	AS38733	CMC Telecom Infrastructure Company	CMC Telecom Infrastructure Company	256
42.96.36.0/24	AS38733	CMC Telecom Infrastructure Company	CMC Telecom Infrastructure Company	256
45.122.244.0/24	AS38733	CMC Telecom Infrastructure Company	CMC Telecom Branch Hanoi City	256
124.158.12.0/24	AS38733	CMC Telecom Infrastructure Company	CMC Telecom Infrastructure Company	256
42.96.62.0/24	AS38733	CMC Telecom Infrastructure Company	CMC Telecom Infrastructure Company	256
124.158.9.0/24	AS38733	CMC Telecom Infrastructure Company	CMC Telecom Infrastructure Company	256
42.96.33.0/24	AS38733	CMC Telecom Infrastructure Company	CMC Telecom Infrastructure Company	256

Raw Whois Response

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS37888 - AS38911'

as-block:       AS37888 - AS38911
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2009-09-29T06:04:16Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS38725 - AS38739'

as-block:       AS38725 - AS38739
descr:          VNNIC-ASBLOCK-VN
descr:          VNNIC
descr:          Vietnam Network Information Center
country:        VN
admin-c:        NTTT3-AP
tech-c:         NTTT3-AP
remarks:        Block of 15 AS numbers from 38725 - 38739
remarks:        for assignment to VNNIC members
mnt-by:         APNIC-HM
mnt-lower:      MAINT-VN-VNNIC
last-modified:  2023-04-21T06:49:57Z
source:         APNIC

person:         Nguyen Thi Thu Thuy
address:        VNNIC-VN
country:        VN
phone:          +84-2435564944
e-mail:         info@vnnic.vn
nic-hdl:        NTTT3-AP
mnt-by:         MAINT-VN-VNNIC
last-modified:  2020-05-11T07:33:48Z
source:         APNIC

% Information related to 'AS38733'

% Abuse contact for 'AS38733' is 'hm-changed@vnnic.vn'

aut-num:        AS38733
as-name:        CMCTELECOM-VN
descr:          CMC Telecom Infrastructure Company
descr:          CMC Tower, Duy Tan, Dich Vong Hau, Yen Hoa, Cau Giay, Hanoi, Vietnam
country:        VN
import:         from AS7643 action pref=100; accept ANY
import:         from AS24086 action pref=100; accept ANY
export:         to AS7643 announce AS38732
export:         to AS24086 announce AS38732
admin-c:        HVA2-AP
tech-c:         NVH31-AP
mnt-by:         MAINT-VN-VNNIC
mnt-irt:        IRT-VNNIC-AP
mnt-routes:     MAINT-VN-VNNIC
last-modified:  2025-05-16T04:04:05Z
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:  2025-11-17T23:08:34Z
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

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-UK2)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.apnic.net",
  "as_blocks" : [ {
    "as_block" : "AS37888 - AS38911",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "HM20-AP" ],
    "tech_contacts" : [ "HM20-AP" ],
    "remarks" : [ "These AS numbers are further assigned by APNIC", "to APNIC members and end-users in the APNIC region" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "APNIC-HM" ],
    "date_updated" : "2009-09-29",
    "source" : "APNIC"
  }, {
    "as_block" : "AS38725 - AS38739",
    "country" : "VN",
    "description" : [ "VNNIC-ASBLOCK-VN", "VNNIC", "Vietnam Network Information Center" ],
    "admin_contacts" : [ "NTTT3-AP" ],
    "tech_contacts" : [ "NTTT3-AP" ],
    "remarks" : [ "Block of 15 AS numbers from 38725 - 38739", "for assignment to VNNIC members" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "MAINT-VN-VNNIC" ],
    "date_updated" : "2023-04-21",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS38733",
    "as_name" : "CMCTELECOM-VN",
    "description" : [ "CMC Telecom Infrastructure Company", "CMC Tower, Duy Tan, Dich Vong Hau, Yen Hoa, Cau Giay, Hanoi, Vietnam" ],
    "country" : "VN",
    "import" : [ "from AS7643 action pref=100; accept ANY", "from AS24086 action pref=100; accept ANY" ],
    "export" : [ "to AS7643 announce AS38732", "to AS24086 announce AS38732" ],
    "admin_contacts" : [ "HVA2-AP" ],
    "tech_contacts" : [ "NVH31-AP" ],
    "mnt_irt" : [ "IRT-VNNIC-AP" ],
    "mnt_routes" : [ "MAINT-VN-VNNIC" ],
    "mnt_by" : [ "MAINT-VN-VNNIC" ],
    "date_updated" : "2025-05-16",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-VNNIC-AP",
    "address" : [ "Ha Noi, VietNam" ],
    "city" : "Ha Noi",
    "country" : "VIETNAM",
    "email" : [ "hm-changed@vnnic.vn" ],
    "abuse_mailbox" : [ "hm-changed@vnnic.vn" ],
    "phone" : [ "+84-24-35564944" ],
    "fax_no" : [ "+84-24-37821462" ],
    "admin_contacts" : [ "NTTT1-AP" ],
    "tech_contacts" : [ "NTTT1-AP" ],
    "mnt_by" : [ "MAINT-VN-VNNIC" ],
    "date_updated" : "2025-11-17",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "HVA2-AP",
    "name" : "Hoang Viet Anh",
    "address" : [ "CMCTELECOM-VN" ],
    "country" : "VN",
    "email" : [ "anh.hv@cmctelecom.vn" ],
    "phone" : [ "+84-366235766" ],
    "mnt_by" : [ "MAINT-VN-VNNIC" ],
    "date_updated" : "2023-08-31",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "NVH31-AP",
    "name" : "Nguyen Van Hieu",
    "address" : [ "CMCTELECOM-VN" ],
    "country" : "VN",
    "email" : [ "hieu.nv@cmctelecom.vn" ],
    "phone" : [ "+84-968189689" ],
    "mnt_by" : [ "MAINT-VN-VNNIC" ],
    "date_updated" : "2022-08-28",
    "source" : "APNIC"
  } ]
}

Peers

AS Number	Description	Country
AS7643	Vietnam Posts and Telecommunications VNPT	VN
AS150855	MAY SOC COMPANY LIMITED	VN
AS149085	E-DATA TECHNOLOGY SERVICE COMPANY LIMITED	VN
AS135932	Viet Storage Technology Joint Stock Company	VN
AS131423	Branch of Long Van System Solution JSC Hanoi	VN
AS149130	TEKNIX CLOUD TECHNOLOGY INFRASTRUCTURE JOINT STOCK COMPANY	VN
AS150846	Room 1508, 15th Floor, Vincom Center Building, 72 Le Thanh Ton, Ben Nghe Ward, District 1, Ho Chi Mi	VN
AS154350	ATZ CORP JOINT STOCK COMPANY	VN
AS131353	NhanHoa Software company	VN
AS45903	CMC Telecom Infrastructure Company	VN

Upstreams

AS Number	Description	Country
AS45903	CMC Telecom Infrastructure Company	VN

Downstreams

AS Number	Description	Country
AS150855	MAY SOC COMPANY LIMITED	VN
AS135932	Viet Storage Technology Joint Stock Company	VN
AS131423	Branch of Long Van System Solution JSC Hanoi	VN
AS149130	TEKNIX CLOUD TECHNOLOGY INFRASTRUCTURE JOINT STOCK COMPANY	VN
AS154350	ATZ CORP JOINT STOCK COMPANY	VN
AS131353	NhanHoa Software company	VN
AS150846	Vietnam Internet Network Information Center VNNIC	VN
AS135901	Phuong Dong technology solution company limited	VN
AS131386	Long Van System Solution JSC	VN
AS154003	NOBIDEV COMPANY LIMITED	VN

Contacts

Email Contacts

hieu.nv@cmctelecom.vn helpdesk@apnic.net anh.hv@cmctelecom.vn hm-changed@vnnic.vn

Abuse Contacts

hm-changed@vnnic.vn

Legacy Routes

103.216.125.0/24 103.216.126.0/24 103.216.127.0/24

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