183.81.20.0/24

AS18403 · FPT Telecom Company

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Summary

Country	Vietnam
Domain	fpt.net
ASN	AS18403
Parent Range	183.81.16.0/20
Registry	APNIC
ID	FPTDYNAMICIP-NET

WHOIS Details

inetnum:        183.81.16.0 - 183.81.31.255
netname:        FPTDYNAMICIP-NET
country:        VN
descr:          FPT Telecom Company
descr:          2nd floor FPT Building, Pham Hung Road, Cau Giay District, Hanoi
admin-c:        LDP12-AP
tech-c:         NOC21-AP
status:         ASSIGNED NON-PORTABLE
mnt-by:         MAINT-VN-FPT
mnt-irt:        IRT-VNNIC-AP
last-modified:  2022-01-17T02:10:49Z
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:         Luong Duy Phuong
address:        FPT-VN
country:        VN
phone:          +84-28-73002222
e-mail:         phuongld@fpt.com
nic-hdl:        LDP12-AP
mnt-by:         MAINT-VN-FPT
last-modified:  2023-10-16T02:13:55Z
abuse-mailbox:  abuse@fpt.net
source:         APNIC

person:         Network Operation Center
nic-hdl:        NOC21-AP
e-mail:         ftel.noc.net@fpt.com
address:        FPT Telecom
phone:          +84-28-73093388
fax-no:         +84-28-73008889
country:        VN
mnt-by:         MAINT-VN-VNNIC
last-modified:  2023-10-16T01:44:54Z
source:         APNIC

route:          183.81.16.0/20
origin:         AS18403
descr:          Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi
mnt-by:         MAINT-VN-FPT
last-modified:  2019-08-01T06:47:42Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 183.81.20.0/24

Range	ASN	Company	Num of IPs
183.81.16.0/20	AS18403	FPT Telecom Company	4,096
183.81.0.0/17	AS18403	FPT Telecom	32,768

Nearby Ranges

BGP prefixes that overlap with 183.81.0.0/16

Range	ASN	Company	Num of IPs
183.81.0.0/17	AS18403	FPT Telecom	32,768
183.81.32.0/20	AS18403	FPT Telecom Company	4,096
183.81.48.0/20	AS18403	FPT Telecom Company	4,096
183.81.64.0/20	AS18403	FPT Telecom Company	4,096
183.81.80.0/20	AS18403	FPT Telecom Company	4,096
183.81.96.0/20	AS18403	FPT Telecom Company	4,096
183.81.16.0/20	AS18403	FPT Telecom Company	4,096
183.81.0.0/20	AS18403	FPT Telecom Company	4,096
183.81.128.0/20	AS38442	Vodafone Fiji Limited	4,096
183.81.112.0/20	AS18403	FPT Telecom Company	4,096
183.81.144.0/21	AS38835	Buroserv Australia Pty Ltd	2,048
183.81.152.0/21	AS24527	PT Hanastar Dakara	2,048
183.81.176.0/22	AS45680	DOVA Corporation	1,024
183.81.180.0/22	AS4847	Infinite City(Beijing)Technology Co.,Ltd	1,024
183.81.163.0/24	AS45352	IPSERVERONE - Colocation and Cloud Hosting	256
183.81.164.0/24	AS45352	IPSERVERONE - Colocation and Cloud Hosting	256
183.81.165.0/24	AS45352	IPSERVERONE - Colocation and Cloud Hosting	256
183.81.166.0/24	AS45352	IPSERVERONE - Colocation and Cloud Hosting	256
183.81.167.0/24	AS45352	IPSERVERONE - Colocation and Cloud Hosting	256
183.81.176.0/24	AS45680	DOVA Co.,Ltd.	256
183.81.177.0/24	AS45680	DOVA Corporation	256
183.81.169.0/24	AS206264	Amarutu Technology Ltd. Network	256
183.81.225.0/24	AS136041	Singapore Telecom,ConnectPlus	256
183.81.226.0/24	AS136041	Singapore Telecom,ConnectPlus	256
183.81.227.0/24	AS136041	Singapore Telecom,ConnectPlus	256
183.81.228.0/24	AS136041	Singapore Telecom,ConnectPlus	256
183.81.229.0/24	AS136041	Singapore Telecom,ConnectPlus	256
183.81.230.0/24	AS136041	Singapore Telecom,ConnectPlus	256
183.81.168.0/24	AS206264	Amarutu Technology Ltd. Network	256
183.81.224.0/24	AS136041	Singapore Telecom,ConnectPlus	256
183.81.134.0/24	AS38442	Vodafone Fiji Limited	256
183.81.138.0/24	AS38442	Vodafone Fiji Limited	256
183.81.160.0/24	AS45352	IPSERVERONE - Colocation and Cloud Hosting	256
183.81.161.0/24	AS45352	IPSERVERONE - Colocation and Cloud Hosting	256
183.81.162.0/24	AS45352	IPSERVERONE - Colocation and Cloud Hosting	256

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
183.81.20.136	AS18403 FPT Telecom Company	`9.81ms` 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
37.74.29.8	AS1136 KPN B.V.	`0.46ms` from Amsterdam, NL
34.232.17.40	AS14618 Amazon.com, Inc.	`0.48ms` from Ashburn, US
13.221.221.248	AS14618 Amazon.com, Inc.	`0.46ms` from Ashburn, US
18.211.23.216	AS14618 Amazon.com, Inc.	`0.47ms` from Ashburn, US
35.94.4.120	AS16509 Amazon.com, Inc.	`0.55ms` from Boardman, US
181.129.249.104	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`6.33ms` from Bogota, CO
71.77.138.152	AS11426 Charter Communications Inc	`9.75ms` from Charlotte, US
79.255.243.136	AS3320 Deutsche Telekom AG	`4.06ms` from Hamburg, DE
23.47.109.24	AS16625 Akamai Technologies, Inc.	`0.49ms` from Hong Kong, HK
43.218.105.72	AS16509 Amazon.com, Inc.	`0.66ms` from Jakarta, ID
82.67.5.184	AS12322 Free SAS	`1.61ms` from Paris, FR
79.177.133.104	AS6810 Bezeq- THE ISRAEL TELECOMMUNICATION CORP. LTD.	`0.56ms` from Petaẖ Tiqva, IL
193.170.235.120	AS1853 ACONET	`1.72ms` from Vienna, AT
37.251.224.216	AS31317 AnschlussWerk GmbH	`7.08ms` from Vienna, AT
62.38.24.184	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`1.25ms` from Athens, GR
110.231.240.72	AS4837 CHINA UNICOM China169 Backbone	`9.28ms` from Beijing, CN
99.34.122.248	AS7018 AT&T Enterprises, LLC	`17.24ms` from Chicago, US
99.144.166.24	AS7018 AT&T Enterprises, LLC	`17.49ms` from Dallas, US
3.255.42.8	AS16509 Amazon.com, Inc.	`0.14ms` from Dublin, IE
3.75.223.152	AS16509 Amazon.com, Inc.	`0.47ms` from Frankfurt am Main, DE
47.75.233.88	AS45102 Alibaba (US) Technology Co., Ltd.	`0.78ms` from Hong Kong, HK
117.233.155.248	AS9829 National Internet Backbone	`4.86ms` from Kolkata, IN
142.171.206.24	AS35916 MULTACOM CORPORATION	`0.18ms` from Los Angeles, US
98.102.8.200	AS10796 Charter Communications Inc	`1.97ms` from Milwaukee, US
189.158.99.232	AS8151 UNINET	`2.18ms` from Monterrey, MX

Traceroute

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

traceroute -a -n -q1 -f5 183.81.20.21

traceroute to 183.81.20.21 (183.81.20.21): 64 hops max, 52 byte packets

5 [AS18403] 118.69.189.178 58.228 ms

6 [AS18403] 183.81.20.21 56.643 ms

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On March 20th 2026

What are IP address ranges?

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