183.81.51.0/24

AS18403 · FPT Telecom Company

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	Vietnam
Domain	fpt.net
ASN	AS18403
Parent Range	183.81.48.0/20
Registry	APNIC
ID	FPTDYNAMICIP-NET

WHOIS Details

inetnum:        183.81.48.0 - 183.81.63.255
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:  2022-01-17T02:10:50Z
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:          183.81.48.0/20
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:  2019-08-01T06:48:00Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 183.81.51.0/24

Range	ASN	Company	Num of IPs
183.81.48.0/20	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

Read more

Pingable IPs

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

IP Address	ASN	Details
183.81.51.200	AS18403 FPT Telecom Company	`1.38ms` 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
54.196.28.136	AS14618 Amazon.com, Inc.	`0.56ms` from Ashburn, US
136.159.79.200	AS33091 University of Calgary	`0.88ms` from Calgary, CA
192.63.30.104	AS11427 Charter Communications Inc	`11.04ms` from Dallas, US
172.217.154.136	AS15169 Google LLC	`0.14ms` from Dallas, US
81.131.165.72	AS2856 British Telecommunications PLC	`9.54ms` from London, GB
95.190.213.136	AS12389 PJSC Rostelecom	`5.42ms` from Novosibirsk, RU
222.10.213.184	AS2516 KDDI CORPORATION	`3.58ms` from Osaka, JP
175.208.186.120	AS4766 Korea Telecom	`1.36ms` from Seoul, KR
192.142.1.184	AS214036 Ultahost, Inc.	`0.52ms` from Amsterdam, NL
18.235.82.184	AS14618 Amazon.com, Inc.	`0.55ms` from Ashburn, US
209.177.171.232	AS18465 Workday, Inc.	`0.77ms` from Ashburn, US
97.233.242.232	AS6167 Verizon Business	`19.55ms` from Chicago, US
107.11.152.104	AS10796 Charter Communications Inc	`7.78ms` from Columbus, US
151.177.205.56	AS1257 Tele2 Sverige AB	`4.86ms` from Falkenberg, SE
161.230.183.120	AS12353 Vodafone Portugal	`2.56ms` from Lisbon, PT
62.28.154.200	AS15525 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	`0.91ms` from Lisbon, PT
18.245.139.232	AS16509 Amazon.com, Inc.	`0.28ms` from London, GB
23.33.52.56	AS16625 Akamai Technologies, Inc.	`0.33ms` from Mumbai, IN
24.184.118.8	AS6128 Cablevision Systems Corp.	`8.97ms` from Piscataway, US
78.93.55.248	AS25233 ARABIAN INTERNET & COMMUNICATIONS SERVICES CO.LTD	`3.32ms` from Riyadh, SA
3.34.242.200	AS16509 Amazon.com, Inc.	`0.13ms` from Seoul, KR
183.188.120.8	AS4837 CHINA UNICOM China169 Backbone	`3.59ms` from Taiyuan, CN
52.196.202.24	AS16509 Amazon.com, Inc.	`0.25ms` from Tokyo, JP
182.114.185.248	AS4837 CHINA UNICOM China169 Backbone	`5.79ms` from Zhengzhou, CN
112.141.51.200	AS9443 Vocus Retail	`4.23ms` from Brisbane, AU

Traceroute

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

traceroute -a -n -q1 -f2 183.81.51.209

traceroute to 183.81.51.209 (183.81.51.209): 64 hops max, 52 byte packets

2 [AS18403] 58.186.148.33 1.22 ms

3 *

4 *

5 [AS18403] 118.70.2.184 0.416 ms

6 [AS18403] 183.81.51.209 1.7 ms

Measurement taken from

IPinfo ProbeNet in Hanoi, VN

On March 21st 2026

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