203.172.45.0/24

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:        203.172.45.0 - 203.172.45.255
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:         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

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:         csl-ip-admin@ais.co.th
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:         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

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
203.172.63.0/24	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
203.172.51.0/24	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
203.172.112.0/24	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
203.172.59.0/24	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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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
203.172.45.134	AS4750 CS LOXINFO PUBLIC COMPANY LIMITED	`0.60ms` 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
204.232.242.216	AS27357 Rackspace Hosting	`0.38ms` from Ashburn, US
64.130.183.232	AS29894 South Central Rural Telecommunications Cooperative Inc.	`10.47ms` from Atlanta, US
125.34.188.232	AS4808 China Unicom Beijing Province Network	`3.49ms` from Beijing, CN
44.224.160.56	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
52.218.220.184	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
76.190.149.184	AS10796 Charter Communications Inc	`7.33ms` from Cleveland, US
209.126.50.104	AS11019 HAProxy Technologies, Inc.	`0.20ms` from Denver, US
106.55.192.56	AS45090 Shenzhen Tencent Computer Systems Company Limited	`4.29ms` from Guangzhou, CN
180.126.86.152	AS4134 CHINANET-BACKBONE	`7.80ms` from Huai'an, CN
43.175.193.88	AS139341 ACE	`0.10ms` from Johannesburg, ZA
199.192.155.8	AS397732 Net Vision Communications, LLC	`5.46ms` from Kansas City, US
220.163.151.40	AS4134 CHINANET-BACKBONE	`15.69ms` from Kunming, CN
170.72.208.24	AS13445 Cisco Webex LLC	`1.11ms` from London, GB
133.162.86.8	AS55386 FUJITSU LIMITED	`2.63ms` from Osaka, JP
49.212.44.104	AS9371 SAKURA Internet Inc.	`0.45ms` from Osaka, JP
112.237.32.168	AS4837 CHINA UNICOM China169 Backbone	`10.82ms` from Qingdao, CN
67.120.159.88	AS7018 AT&T Enterprises, LLC	`5.94ms` from Redding, US
73.157.10.104	AS7922 Comcast Cable Communications, LLC	`3.49ms` from Seattle, US
14.70.156.104	AS4766 Korea Telecom	`2.46ms` from Seoul, KR
47.130.155.72	AS16509 Amazon.com, Inc.	`0.14ms` from Singapore, SG
124.71.198.56	AS55990 Huawei Cloud Service data center	`2.79ms` from Suzhou, CN
5.178.183.248	AS16010 Magticom Ltd.	`0.56ms` from Tbilisi, GE
203.140.33.248	AS2519 ARTERIA Networks Corporation	`2.65ms` from Tokyo, JP
162.23.243.56	AS33845 Swiss Federation represented by FOITT	`2.93ms` from Zuerich, CH
112.213.43.216	AS18159 Netspeed Data Ltd	`6.17ms` from Auckland, NZ

Traceroute

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

traceroute -a -n -q1 -f2 203.172.45.30

traceroute to 203.172.45.30 (203.172.45.30): 64 hops max, 52 byte packets

2 [] 203.159.68.108 2.314 ms

3 [AS4750] 203.170.172.94 4.311 ms

4 [AS4750] 203.170.200.221 4.266 ms

5 [AS4750] 203.172.45.30 2.176 ms

Measurement taken from

IPinfo ProbeNet in Bangkok, TH

On January 19th 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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