203.172.32.0/23

AS4750 · CS LOXINFO PUBLIC COMPANY LIMITED

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Summary

Country	Thailand
Domain	csloxinfo.net
ASN	AS4750
Registry	APNIC
ID	CSLOXINFO-TH

WHOIS Details

inetnum:        203.172.32.0 - 203.172.39.255
netname:        CSLOXINFO-TH
descr:          CS Loxinfo Public Company Limited
descr:          90 CW Tower A, 17-20th floor
descr:          Ratchadapisek Rd, Huai Kwang, Bangkok 10310
country:        TH
org:            ORG-CLPC1-AP
admin-c:        LIA1-AP
tech-c:         LIA1-AP
abuse-c:        AC1613-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      LOXINFO-IS
mnt-irt:        IRT-CSLOXINFO-TH
last-modified:  2024-07-18T04:23:56Z
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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        LIA1-AP
tech-c:         LIA1-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2025-09-04
mnt-by:         CSLOXINFO-IS
last-modified:  2025-11-18T10:47:13Z
source:         APNIC

organisation:   ORG-CLPC1-AP
org-name:       CS Loxinfo Public Company Limited
org-type:       LIR
country:        TH
address:        90 CW Tower A 19-20th floor
address:        Ratchadapisek Rd
address:        Huai Kwang
phone:          +66-2263-8000
fax-no:         +66-2263-8790
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2025-06-04T12:55:09Z
source:         APNIC

role:           ABUSE CSLOXINFOTH
country:        ZZ
address:        CW Tower
address:        Ratchadapisek Road, Huai Khwang, Bangkok 10310
phone:          +66 2 2638000
e-mail:         [email protected]
admin-c:        LIA1-AP
tech-c:         LIA1-AP
nic-hdl:        AC1613-AP
remarks:        Generated from irt object IRT-CSLOXINFO-TH
remarks:        [email protected] was validated on 2025-09-04
abuse-mailbox:  [email protected]
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:         [email protected]
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:          203.172.32.0/23
origin:         AS4750
descr:          CS Loxinfo Public Company Limited 90 CW Tower A 17-20th floor Ratchadapisek Rd Huai Kwang
mnt-by:         LOXINFO-IS
last-modified:  2025-05-29T00:37:56Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.172.0.0/16

Range	ASN	Company	Num of IPs
203.172.128.0/17	AS23974	Ministry of Education - EMISC	32,768
203.172.0.0/19	AS7629	VITRO INC.	8,192
203.172.16.0/20	AS7629	VITRO INC.	4,096
203.172.40.0/22	AS9891	CS Loxinfo Public Company Limited	1,024
203.172.48.0/22	AS4750	CS Loxinfo Public Company Limited	1,024
203.172.64.0/22	AS4750	CS LoxInfo Public COmpany Limited	1,024
203.172.114.0/23	AS4750	CS LoxInfo Public COmpany Limited	512
203.172.46.0/23	AS4750	CS Loxinfo Public Company Limited	512
203.172.59.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.172.63.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.172.89.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.172.90.0/24	AS45458	Blue Worth_Corporate Internet	256
203.172.91.0/24	AS45458	Blue Worth_Corporate Internet	256
203.172.109.0/24	AS4750	CS LoxInfo Public COmpany Limited	256
203.172.110.0/24	AS4750	CS LoxInfo Public COmpany Limited	256
203.172.116.0/24	AS4750	CS LoxInfo Public COmpany Limited	256
203.172.119.0/24	AS4750	reassign to Loopback for BN at The Cloud	256
203.172.126.0/24	AS4750	reassign to Renaissance Bangkok Hotel Ratchaprasong	256
203.172.36.0/24	AS4750	reassign to Wan IP for Corporate customer(Cloud)	256
203.172.37.0/24	AS4750	reassign to Wan IP for Corporate customer(Cloud)	256
203.172.38.0/24	AS4750	reassign to CSLOXINFO-IDC	256
203.172.39.0/24	AS4750	reassign to WHA INFONITE CO.,Ltd.	256
203.172.45.0/24	AS4750	CS Loxinfo Public Company Limited	256
203.172.51.0/24	AS4750	reassign to Wan IP for Corporate customer(Cloud)(/31)	256
203.172.53.0/24	AS4750	CS Loxinfo Public Company Limited	256
203.172.54.0/24	AS4750	CS Loxinfo Public Company Limited	256
203.172.58.0/24	AS4750	CS Loxinfo Public Company Limited	256
203.172.60.0/24	AS4750	reassign to Wan IP for Bangkok(Cyberworld)	256
203.172.61.0/24	AS4750	reassign to Corporate Wan for Cyberworld	256
203.172.62.0/24	AS4750	CS Loxinfo Public Company Limited	256
203.172.69.0/24	AS4750	CS LoxInfo Public COmpany Limited	256
203.172.70.0/24	AS4750	reassign to Management for service broadband	256
203.172.71.0/24	AS4750	reassign to Management for service broadband	256
203.172.78.0/24	AS4750	reassign to Hyatt Place Sukhumvit Bangkok (Pioneer Property Co., Ltd )	256
203.172.79.0/24	AS4750	reassign to Wan IP for Corporate customer(Cloud)(/31)	256
203.172.73.0/24	AS137392	reassign to KTB Securities (Thailand) Co., Ltd.	256
203.172.93.0/24	AS4750	CS LoxInfo Public COmpany Limited	256
203.172.95.0/24	AS4750	CS LoxInfo Public COmpany Limited	256
203.172.88.0/24	AS4750	CS LoxInfo Public COmpany Limited	256
203.172.108.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.172.111.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.172.112.0/24	AS45458	reassign to ¸£ ¸° ¸š ¸š mass mail marketing	256
203.172.117.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.172.44.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.172.52.0/24	AS45458	Advanced Wireless Network Company Limited	256
203.172.55.0/24	AS45458	Advanced Wireless Network Company Limited	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Pingable IPs

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

IP Address	ASN	Details
203.172.33.1	AS4750 CS LOXINFO PUBLIC COMPANY LIMITED	`1.24ms` from Bangkok, TH
203.172.32.14	AS4750 CS LOXINFO PUBLIC COMPANY LIMITED	`4.39ms` 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
52.177.39.167	AS8075 Microsoft Corporation	`0.20ms` from Boydton, US
115.130.139.151	AS7545 TPG Telecom Limited	`1.74ms` from Brisbane, AU
203.93.99.215	AS9929 CHINA UNICOM Industrial Internet Backbone	`9.04ms` from Chengdu, CN
191.253.103.23	AS28343 UNIFIQUE TELECOMUNICACOES S/A	`6.88ms` from Curitiba, BR
2.243.138.247	AS6805 Telefonica Germany GmbH & Co.OHG	`4.57ms` from Duesseldorf, DE
87.238.194.231	AS42730 EVANZO e-commerce GmbH	`0.36ms` from Frankfurt am Main, DE
45.250.181.199	AS4816 China Telecom (Group)	`2.44ms` from Guangzhou, CN
2.192.30.231	AS16232 Telecom Italia S.p.A.	`15.84ms` from Milan, IT
115.149.158.103	AS4134 CHINANET-BACKBONE	`0.41ms` from Nanchang, CN
162.84.161.23	AS701 Verizon Business	`2.26ms` from New York City, US
120.199.108.23	AS56041 China Mobile communications corporation	`13.76ms` from Ningbo, CN
98.91.94.247	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
57.154.161.183	AS8075 Microsoft Corporation	`0.57ms` from San Jose, US
27.233.119.71	AS4766 Korea Telecom	`1.71ms` from Seoul, KR
188.177.151.119	AS3292 TDC Holding A/S	`1.65ms` from Skanderborg, DK
13.239.32.151	AS16509 Amazon.com, Inc.	`0.14ms` from Sydney, AU
83.131.238.183	AS5391 Hrvatski Telekom d.d.	`1.71ms` from Zagreb, HR
62.45.190.103	AS15435 DELTA Fiber Nederland B.V.	`1.42ms` from Amsterdam, NL
40.160.3.87	AS16276 OVH SAS	`1.31ms` from Ashburn, US
104.59.227.55	AS7018 AT&T Enterprises, LLC	`1.60ms` from Atlanta, US
84.185.97.119	AS3320 Deutsche Telekom AG	`3.61ms` from Berlin, DE
18.237.169.71	AS16509 Amazon.com, Inc.	`0.27ms` from Boardman, US
187.183.128.7	AS28573 Claro NXT Telecomunicacoes Ltda	`15.32ms` from Brasilia, BR
75.108.219.103	AS19108 Optimum	`18.41ms` from Chicago, US
24.166.90.55	AS10796 Charter Communications Inc	`4.91ms` from Cleveland, US

Traceroute

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

traceroute -a -n -q1 -f2 203.172.33.9

traceroute to 203.172.33.9 (203.172.33.9): 64 hops max, 52 byte packets

2 [] 203.159.68.108 2.304 ms

3 [AS4750] 203.170.172.94 10.047 ms

4 [AS4750] 203.172.33.9 2.419 ms

Measurement taken from

IPinfo ProbeNet in Bangkok, TH

On January 30th 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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