1. All IP Ranges
  2. 221.0.0.0/8
  3. 221.121.0.0/16
  4. AS7602  | 221.121.0.0/18

221.121.0.0/18

AS7602  ·  Sai gon Postel Corporation

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Summary

Country Vietnam
Domain spt.vn
ASN AS7602
Registry APNIC
ID SPT-VN

WHOIS Details

inetnum:        221.121.0.0 - 221.121.63.255
netname:        SPT-VN
country:        VN
descr:          Sai gon Postel Corporation
descr:          10 Co Giang, Cau Ong Lanh Ward, District 1, Ho Chi Minh City, Vietnam
admin-c:        NTKD1-AP
tech-c:         NBAD1-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-VN-VNNIC
mnt-irt:        IRT-VNNIC-AP
mnt-lower:      MAINT-VN-SPT
mnt-routes:     MAINT-VN-SPT
last-modified:  2022-09-26T08:37:13Z
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:         Nguyen Ba Anh Dung
address:        SPT-VN
country:        VN
phone:          +84-2854041168
phone:          +84-834554344
e-mail:         dung.n@spt.vn
nic-hdl:        NBAD1-AP
mnt-by:         MAINT-VN-VNNIC
last-modified:  2022-09-20T06:31:10Z
source:         APNIC

person:         Nguyen Thi Kim Dan
nic-hdl:        NTKD1-AP
e-mail:         kimdan@spt.vn
address:        SPT-VN
address:        10 Co Giang, Dist.1, Ho Chi Minh City
phone:          +84-28-54040121
country:        VN
mnt-by:         MAINT-VN-SPT
last-modified:  2022-09-20T06:34:22Z
source:         APNIC

route:          221.121.0.0/18
descr:          SPT-VN
origin:         AS7602
mnt-by:         MAINT-VN-SPT
last-modified:  2022-09-24T18:47:53Z
source:         APNIC

Overlapping Ranges

BGP prefixes that are contained by 221.121.0.0/18

Range ASN Company Num of IPs
221.121.0.0/24 AS7602 Dai IP su dung cho mang khach hang xDSL 256
221.121.5.0/24 AS7602 Dai IP su dung cho mang khach hang xDSL 256
221.121.6.0/24 AS7602 Dai IP su dung cho mang khach hang xDSL 256

Nearby Ranges

BGP prefixes that overlap with 221.121.0.0/16

Range ASN Company Num of IPs
221.121.64.0/19 AS9509 Department of Employment and Workplace Relations 8,192
221.121.128.0/19 AS45671 Servers Australia Pty. Ltd 8,192
221.121.96.0/19 AS9299 Pacific Internet Phils. 8,192
221.121.160.0/20 AS10013 FreeBit Co., Ltd. 4,096
221.121.184.0/21 AS45351 8th Floor ELJ Communications Center 2,048
221.121.157.0/24 AS45671 Servers Australia Pty Ltd 256
221.121.158.0/24 AS45671 Servers Australia Pty Ltd 256
221.121.159.0/24 AS45671 Servers Australia Pty Ltd 256
221.121.143.0/24 AS45671 SAU NET 256
221.121.156.0/24 AS45671 Servers Australia Pty Ltd 256
221.121.5.0/24 AS7602 Dai IP su dung cho mang khach hang xDSL 256
221.121.6.0/24 AS7602 Dai IP su dung cho mang khach hang xDSL 256
221.121.139.0/24 AS45671 SAU NET 256
221.121.0.0/24 AS7602 Dai IP su dung cho mang khach hang xDSL 256

Hosted domains

There are 22 domain names hosted across 13 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
221.121.12.253 lobo.vn 9
221.121.15.4 fcci.vn 2
221.121.12.240 daitruongphat.vn 1
221.121.12.215 maihoatrang.vn 1
221.121.14.52 phgvn.com 1
221.121.12.151 minhtrietcorp.com 1
221.121.15.230 hsvgroup.com.vn 1
221.121.14.245 vitechvt.com 1
221.121.12.138 pnco.com.vn 1
221.121.35.3 lyso.co 1
221.121.12.250 yeucherry.com 1
221.121.15.16 escseafood.com.vn 1
221.121.35.14 spttelecom.vn 1

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

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

IP Address ASN Details
221.121.0.42 AS7602 Sai gon Postel Corporation 1.06ms from Ho Chi Minh City, VN
221.121.4.253 AS7602 Sai gon Postel Corporation 1.23ms from Ho Chi Minh City, VN
221.121.6.1 AS7602 Sai gon Postel Corporation 1.47ms 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
190.131.227.242 AS262191 LIBERTY NETWORKS DE COLOMBIA S.A.S 0.82ms from Bogota, CO
94.21.195.130 AS20845 DIGI Tavkozlesi es Szolgaltato Kft. 0.98ms from Budapest, HU
170.239.174.242 AS264809 Cristian Cayetano Ortiz (MEGANETSLP) 12.81ms from Buenos Aires, AR
111.9.93.2 AS9808 China Mobile Communications Group Co., Ltd. 5.33ms from Chengdu, CN
65.162.73.50 AS16823 Nortex Communications Company 3.63ms from Dallas, US
97.247.184.162 AS6167 Verizon Business 10.71ms from Dallas, US
52.158.174.146 AS8075 Microsoft Corporation 0.17ms from Des Moines, US
38.140.177.50 AS174 Cogent Communications, LLC 0.41ms from Indianapolis, US
190.106.26.98 AS19447 ALFANUMERIC 14.89ms from San Pedro, CR
118.52.176.194 AS4766 Korea Telecom 2.45ms from Seoul, KR
175.114.198.18 AS9318 SK Broadband Co Ltd 2.20ms from Seoul, KR
36.233.175.146 AS3462 Data Communication Business Group 2.91ms from Taichung, TW
195.50.198.2 AS3249 Telia Eesti AS 0.48ms from Tallinn, EE
109.186.149.226 AS1680 Cellcom Fixed Line Communication L.P 3.00ms from Tel Aviv, IL
104.71.160.130 AS16625 Akamai Technologies, Inc. 0.20ms from Tokyo, JP
160.251.2.2 AS7506 GMO Internet Group, Inc. 0.41ms from Tokyo, JP
5.140.248.2 AS12389 PJSC Rostelecom 0.84ms from Yekaterinburg, RU
4.180.114.82 AS8075 Microsoft Corporation 0.28ms from Amsterdam, NL
52.73.20.130 AS14618 Amazon.com, Inc. 0.51ms from Ashburn, US
67.200.93.130 AS7029 Windstream Communications LLC 0.56ms from Ashburn, US
184.177.105.114 AS22773 Cox Communications Inc. 8.88ms from Boston, US
91.104.86.194 AS213155 Yettel Hungary Ltd. 9.54ms from Budapest, HU
87.60.18.50 AS3292 TDC Holding A/S 1.11ms from Copenhagen, DK
34.57.209.210 AS396982 Google LLC 0.11ms from Council Bluffs, US
91.54.230.130 AS3320 Deutsche Telekom AG 8.62ms 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 -m8 221.121.7.187
traceroute to 221.121.7.187 (221.121.7.187): 8 hops max, 52 byte packets
2 *
3 *
4 [AS131429] 42.1.109.27 98.22 ms
5 [AS55309] 112.109.89.70 98.196 ms
6 *
7 *
8 *
Measurement taken from IPinfo ProbeNet in Delhi, IN
On

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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