221.133.28.0/22

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:        221.133.0.0 - 221.133.31.255
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:  2022-09-26T08:39:02Z
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:          221.133.0.0/19
descr:          SPT-VN
origin:         AS7602
mnt-by:         MAINT-VN-SPT
last-modified:  2022-09-24T18:53:22Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 221.133.0.0/16

Range	ASN	Company	Num of IPs
221.133.64.0/18	AS17534	KANAZAWA CABLE TELEVISION NET CO.,LTD.	16,384
221.133.128.0/18	AS38096	SK Broadband Co Ltd	16,384
221.133.128.0/18	AS9689	SK Broadband Co Ltd	16,384
221.133.192.0/19	AS703	Verizon Australia PTY Limited	8,192
221.133.40.0/21	AS134809	MacroLynx Sdn Bhd	2,048
221.133.32.0/21	AS134809	MacroLynx Sdn Bhd	2,048
221.133.12.0/22	AS7602	Core Network	1,024
221.133.24.0/22	AS7602	ADSL service	1,024
221.133.16.0/22	AS7602	ISP tai POP Ha Noi	1,024
221.133.63.0/24	AS9712	INet Technologies Co., Ltd.	256
221.133.55.0/24	AS55615	DOUZONEBIZON	256
221.133.0.0/24	AS7602	IXP tai HCM	256
221.133.1.0/24	AS7602	ISP tai HCM	256
221.133.54.0/24	AS9712	INet Technologies Co., Ltd.	256
221.133.61.0/24	AS9712	INet Technologies Co., Ltd.	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
221.133.30.250	AS7602 Sai gon Postel Corporation	`2.03ms` from Ho Chi Minh City, VN
221.133.29.245	AS7602 Sai gon Postel Corporation	`1.48ms` from Ho Chi Minh City, VN
221.133.31.21	AS7602 Sai gon Postel Corporation	`2.29ms` 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
35.93.159.102	AS16509 Amazon.com, Inc.	`0.30ms` from Boardman, US
50.246.138.230	AS7922 Comcast Cable Communications, LLC	`13.56ms` from Dallas, US
109.68.98.134	AS8878 nfon AG	`0.40ms` from Frankfurt am Main, DE
14.248.211.246	AS45899 VNPT Corp	`1.25ms` from Hanoi, VN
59.148.207.150	AS9269 Hong Kong Broadband Network Ltd.	`0.67ms` from Hong Kong, HK
99.173.23.214	AS7018 AT&T Enterprises, LLC	`2.42ms` from Los Angeles, US
79.33.138.134	AS3269 Telecom Italia S.p.A.	`4.89ms` from Milan, IT
194.88.199.198	AS47204 MCS LLC	`14.22ms` from Moscow, RU
185.61.177.246	AS59877 VA TELECOM SAS	`0.32ms` from Paris, FR
20.25.138.166	AS8075 Microsoft Corporation	`0.22ms` from Phoenix, US
178.23.220.118	AS50971 JHComp s.r.o.	`5.56ms` from Prague, CZ
124.221.234.70	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.45ms` from Shanghai, CN
52.139.247.246	AS8075 Microsoft Corporation	`1.91ms` from Singapore, SG
112.11.113.198	AS56041 China Mobile communications corporation	`7.04ms` from Suzhou, CN
60.240.143.6	AS7545 TPG Telecom Limited	`1.18ms` from Sydney, AU
60.84.118.22	AS17676 SoftBank Corp.	`8.80ms` from Tokyo, JP
41.66.66.86	AS51265 Mass Response Service GmbH	`1.34ms` from Vienna, AT
183.250.92.134	AS9808 China Mobile Communications Group Co., Ltd.	`0.38ms` from Xiamen, CN
162.203.255.134	AS7018 AT&T Enterprises, LLC	`6.59ms` from Atlanta, US
173.19.252.150	AS30036 Mediacom Communications Corp	`8.33ms` from Chicago, US
71.228.53.102	AS7922 Comcast Cable Communications, LLC	`6.23ms` from Chicago, US
159.224.198.118	AS13188 CONTENT DELIVERY NETWORK LTD	`7.34ms` from Kyiv, UA
213.122.22.182	AS2856 British Telecommunications PLC	`0.88ms` from London, GB
47.152.185.230	AS5650 Frontier Communications of America, Inc.	`2.49ms` from Los Angeles, US
123.208.74.214	AS135887 Belong (Telstra Limited)	`2.12ms` from Melbourne, AU

Traceroute

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

traceroute -a -n -q1 221.133.29.58

traceroute to 221.133.29.58 (221.133.29.58): 64 hops max, 52 byte packets

1 [AS15169] 64.233.174.23 168.693 ms

2 [AS24088] 103.88.113.1 202.557 ms

3 *

4 [AS7602] 221.133.29.58 237.06 ms

Measurement taken from

IPinfo ProbeNet in Council Bluffs, US

On March 20th 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.

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