203.146.21.0/24

AS9891 · CS LOXINFO Public Company Limited.

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Summary

Country	Thailand
Domain	csloxinfo.com
ASN	AS9891
Parent Range	203.146.20.0/22
Registry	APNIC
ID	IDC-CSLOXINFO

WHOIS Details

inetnum:        203.146.21.0 - 203.146.21.255
netname:        idc-csloxinfo
descr:          CSLOXINFO-IDC
descr:          contact
country:        TH
admin-c:        LIA1-AP
tech-c:         LIA1-AP
abuse-c:        AC1613-AP
status:         ASSIGNED NON-PORTABLE
mnt-by:         LOXINFO-IS
mnt-irt:        IRT-CSLOXINFO-TH
last-modified:  2021-01-20T01:50:21Z
source:         APNIC

irt:            IRT-CSLOXINFO-TH
address:        CW Tower
address:        Ratchadapisek Road, Huai Khwang, Bangkok 10310
phone:          +66 2 2638000
fax-no:         +66 2 2638790
e-mail:         csl-ip-admin@ais.co.th
abuse-mailbox:  csl-ip-admin@ais.co.th
admin-c:        LIA1-AP
tech-c:         LIA1-AP
auth:           # Filtered
remarks:        csl-ip-admin@ais.co.th was validated on 2025-09-04
mnt-by:         CSLOXINFO-IS
last-modified:  2025-11-18T10:47:13Z
source:         APNIC

role:           ABUSE CSLOXINFOTH
country:        ZZ
address:        CW Tower
address:        Ratchadapisek Road, Huai Khwang, Bangkok 10310
phone:          +66 2 2638000
e-mail:         csl-ip-admin@ais.co.th
admin-c:        LIA1-AP
tech-c:         LIA1-AP
nic-hdl:        AC1613-AP
remarks:        Generated from irt object IRT-CSLOXINFO-TH
remarks:        csl-ip-admin@ais.co.th was validated on 2025-09-04
abuse-mailbox:  csl-ip-admin@ais.co.th
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-04T22:49:47Z
source:         APNIC

role:           Loxinfo IP Admins
remarks:        CS LOXINFO PUBLIC COMPANY LIMITED
address:        CW Tower
address:        Ratchadapisek Road, Huai Khwang, Bangkok 10310
country:        TH
phone:          +66-2263-8000
fax-no:         +66-2263-8790
e-mail:         csl-ip-admin@ais.co.th
admin-c:        LIA1-AP
tech-c:         LIA1-AP
nic-hdl:        LIA1-AP
mnt-by:         CSLOXINFO-IS
last-modified:  2026-01-12T02:24:09Z
source:         APNIC

route:          203.146.21.0/24
origin:         AS9891
descr:          CS Loxinfo Public Company Limited 90 CW Tower A 17-20th floor Ratchadapisek Rd Huai Kwang
mnt-by:         LOXINFO-IS
last-modified:  2025-05-28T11:47:20Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 203.146.21.0/24

Range	ASN	Company	Num of IPs
203.146.20.0/22	AS4750	CS Loxinfo Public Company Limited	1,024

Nearby Ranges

BGP prefixes that overlap with 203.146.0.0/16

Range	ASN	Company	Num of IPs
203.146.232.0/21	AS4750	CS Loxinfo Public Company Limited	2,048
203.146.20.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.212.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.48.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.188.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.192.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.140.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.176.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.168.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.152.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.84.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.112.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.100.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.104.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.40.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.146.156.0/23	AS4750	CS Loxinfo Public Company Limited	512
203.146.172.0/23	AS4750	CS Loxinfo Public Company Limited	512
203.146.180.0/23	AS4750	CS Loxinfo Public Company Limited	512
203.146.54.0/23	AS4750	CS Loxinfo Public Company Limited	512
203.146.82.0/23	AS4750	CS Loxinfo Public Company Limited	512
203.146.196.0/23	AS4750	CS Loxinfo Public Company Limited	512
203.146.186.0/23	AS4750	CS Loxinfo Public Company Limited	512
203.146.96.0/23	AS4750	CS Loxinfo Public Company Limited	512
203.146.138.0/23	AS4750	CS Loxinfo Public Company Limited	512
203.146.132.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.80.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.76.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.128.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.198.0/24	AS140326	Advanced Wireless Network Company Limited	256
203.146.75.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.52.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.109.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.45.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.29.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.74.0/24	AS45265	CS Loxinfo Public Company Limited	256
203.146.104.0/24	AS134682	reassign to True Universal Convergence Company Limited (Project : KGI)	256
203.146.185.0/24	AS133481	Advanced Wireless Network Company Limited	256
203.146.247.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.230.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.204.0/24	AS38448	reassign to Asia Plus Securities Plc.	256
203.146.159.0/24	AS4750	CS Loxinfo Public Company Limited	256
203.146.227.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.16.0/24	AS4750	CS Loxinfo Public Company Limited	256
203.146.202.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.146.63.0/24	AS38444	reassign to Advanced Info Service	256
203.146.175.0/24	AS4750	CS Loxinfo Public Company Limited	256
203.146.207.0/24	AS133481	Advanced Wireless Network Company Limited	256
203.146.136.0/24	AS4750	CS Loxinfo Public Company Limited	256
203.146.183.0/24	AS4750	CS Loxinfo Public Company Limited	256
203.146.17.0/24	AS45458	Advanced Wireless Network Company Limited	256

Hosted domains

There are 23 domain names hosted across 14 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.146.21.240	goldtraders.or.th	4
203.146.21.155	nuduan-plus.com	4
203.146.21.241	thaigold.info	2
203.146.21.246	aecmobile.co.th	2
203.146.21.157	iamzaa.com	2
203.146.21.159	seksun.co.th	1
203.146.21.153	koalamarch.com	1
203.146.21.224	clubnutricia.com	1
203.146.21.248	ersthailand.com	1
203.146.21.239	fillteach.com	1
203.146.21.5	silkspan.net	1
203.146.21.245	mst-dealer.com	1
203.146.21.196	lasikthai.com	1
203.146.21.219	reicth.com	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
203.146.21.8	AS9891 CS LOXINFO Public Company Limited.	`0.53ms` from Bangkok, TH

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
212.123.225.184	AS8220 COLT Technology Services Group Limited	`1.13ms` from Amsterdam, NL
209.193.46.136	AS7782 Alaska Communications Systems Group, Inc.	`4.58ms` from Anchorage, US
84.146.172.72	AS3320 Deutsche Telekom AG	`3.31ms` from Hamburg, DE
197.251.224.72	AS29614 Ghana Telecommunications Company Limited	`8.20ms` from Lagos, NG
208.94.223.104	AS396982 Google LLC	`0.07ms` from Melbourne, AU
70.22.84.88	AS701 Verizon Business	`3.82ms` from Philadelphia, US
60.214.81.104	AS4837 CHINA UNICOM China169 Backbone	`9.25ms` from Qingdao, CN
89.19.199.152	AS41465 Limited Liability Company VolgoGazTelecom	`0.56ms` from Samara, RU
112.104.174.24	AS4780 Digital United Inc.	`3.03ms` from Taipei, TW
61.214.209.120	AS4713 NTT DOCOMO BUSINESS,Inc.	`4.01ms` from Tokyo, JP
134.65.241.24	AS31898 Oracle Corporation	`0.15ms` from Vinhedo, BR
2.20.247.120	AS20940 Akamai International B.V.	`0.20ms` from Zuerich, CH
20.8.155.216	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
99.110.59.56	AS7018 AT&T Enterprises, LLC	`4.63ms` from Atlanta, US
103.130.178.8	AS7015 Comcast Cable Communications, LLC	`0.31ms` from Boston, US
97.234.168.120	AS6167 Verizon Business	`17.78ms` from Chicago, US
98.28.63.200	AS10796 Charter Communications Inc	`9.61ms` from Columbus, US
189.4.127.24	AS28573 Claro NXT Telecomunicacoes Ltda	`6.17ms` from Curitiba, BR
97.178.12.72	AS6167 Verizon Business	`17.11ms` from Dallas, US
103.180.112.104	AS149474 Your Net	`1.16ms` from Dhaka, BD
77.243.186.8	AS9009 M247 Europe SRL	`0.30ms` from Frankfurt am Main, DE
218.158.237.56	AS4766 Korea Telecom	`4.20ms` from Incheon, KR
112.163.31.8	AS4766 Korea Telecom	`7.13ms` from Incheon, KR
71.167.6.120	AS701 Verizon Business	`2.63ms` from New York City, US
221.147.78.8	AS4766 Korea Telecom	`1.16ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f5 203.146.21.219

traceroute to 203.146.21.219 (203.146.21.219): 64 hops max, 52 byte packets

5 [AS3491] 116.206.112.11 2.862 ms

6 [AS4750] 203.170.173.18 1.219 ms

7 [AS9891] 203.146.250.35 1.454 ms

8 [AS9891] 203.146.21.219 1.218 ms

Measurement taken from

IPinfo ProbeNet in Bangkok, TH

On February 7th 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.

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