1. All IP Ranges
  2. 203.0.0.0/8
  3. 203.170.0.0/16
  4. AS133481  | 203.170.221.0/24

203.170.221.0/24

AS133481  ·  AIS Fibre

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

Summary

Country Thailand
Domain csl.co.th
ASN AS133481
Registry APNIC
ID CSL-SME-BB-TH

WHOIS Details

inetnum:        203.170.221.0 - 203.170.221.255
netname:        CSL-SME-BB-TH
descr:          reassign to CSL SME Broadband
descr:          contact ip_admin@csl.co.th
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:  2021-01-20T01:55:02Z
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:          203.170.221.0/24
origin:         AS133481
descr:          CS Loxinfo Public Company Limited 90 CW Tower A 17-20th floor Ratchadapisek Rd Huai Kwang
mnt-by:         Loxinfo-IS
last-modified:  2025-05-29T00:32:01Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.170.0.0/16

Range ASN Company Num of IPs
203.170.96.0/19 AS9569 kt HCN Co.,Ltd. 8,192
203.170.32.0/20 AS10000 Nagasaki Cable Media Inc. 4,096
203.170.80.0/21 AS38719 Dreamscape Networks PTY LTD 2,048
203.170.164.0/22 AS4750 CS Loxinfo Public Company Limited 1,024
203.170.16.0/22 AS45533 The Comptroller General's Department 1,024
203.170.52.0/22 AS3491 PCCW Global Japan corporation. 1,024
203.170.248.0/22 AS4750 CS Loxinfo Public Company Limited 1,024
203.170.240.0/22 AS4750 CS Loxinfo Public Company Limited 1,024
203.170.172.0/22 AS4750 CS Loxinfo Public Company Limited 1,024
203.170.50.0/23 AS23883 Movaci Co., Ltd 512
203.170.160.0/23 AS9891 CS Loxinfo Public Company Limited 512
203.170.88.0/23 AS45437 Real World Technology Solutions Pty Ltd 512
203.170.192.0/23 AS9891 CS Loxinfo Public Company Limited 512
203.170.146.0/23 AS4750 CS Loxinfo Public Company Limited 512
203.170.26.0/23 AS38247 Vietnamobile Telecommunications Joint Stock Company 512
203.170.241.0/24 AS133481 reassign to CSL SME Broadband 256
203.170.240.0/24 AS133481 reassign to CSL SME Broadband 256
203.170.217.0/24 AS133481 reassign to CSL SME Broadband 256
203.170.223.0/24 AS133481 reassign to CSL SME Broadband 256
203.170.222.0/24 AS133481 reassign to CSL SME Broadband 256
203.170.216.0/24 AS133481 reassign to CSL SME Broadband 256
203.170.209.0/24 AS133481 reassign to CSL SME Broadband 256
203.170.210.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.228.0/24 AS38444 reassign to Advanced Info Service 256
203.170.229.0/24 AS38444 reassign to Advanced Info Service 256
203.170.230.0/24 AS38444 reassign to Advanced Info Service 256
203.170.231.0/24 AS38444 reassign to Advanced Info Service 256
203.170.196.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.191.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.131.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.56.0/24 AS23838 Network Pro 256
203.170.48.0/24 AS17912 EPAM SYSTEMS INDIA PRIVATE LIMITED 256
203.170.220.0/24 AS133481 reassign to CSL SME Broadband 256
203.170.213.0/24 AS133481 reassign to CSL SME Broadband 256
203.170.155.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.153.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.169.0/24 AS154502 CS Loxinfo Public Company Limited 256
203.170.168.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.171.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.179.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.185.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.149.0/24 AS45458 reassign to IP Star 256
203.170.194.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.144.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.199.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.69.0/24 AS141421 Cactus Internet Services Private Limited 256
203.170.214.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.225.0/24 AS45458 Advanced Wireless Network Company Limited 256
203.170.219.0/24 AS133481 reassign to CSL SME Broadband 256

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address ASN Details
203.170.221.1 AS133481 AIS Fibre 5.12ms 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
8.40.52.88 AS23118 Skyline Telephone 3.81ms from Asheville, US
24.180.89.120 AS20115 Charter Communications LLC 13.67ms from Chicago, US
86.53.72.152 AS3257 GTT Communications Inc. 0.54ms from London, GB
106.215.107.40 AS24560 Bharti Airtel Ltd., Telemedia Services 15.10ms from Mumbai, IN
46.233.237.72 AS47165 Omskie kabelnye seti Ltd. 8.20ms from Novosibirsk, RU
170.64.45.24 AS15108 Allo Communications LLC 4.98ms from Phoenix, US
174.166.31.72 AS7922 Comcast Cable Communications, LLC 8.45ms from Secaucus, US
163.180.155.200 AS17870 Kyung Hee University 3.08ms from Seoul, KR
121.169.132.56 AS4766 Korea Telecom 1.63ms from Seoul, KR
52.156.170.200 AS8075 Microsoft Corporation 0.69ms from Sydney, AU
153.205.53.72 AS4713 NTT DOCOMO BUSINESS,Inc. 3.42ms from Tokyo, JP
201.146.54.72 AS8151 UNINET 7.67ms from Tucson, US
18.210.78.152 AS14618 Amazon.com, Inc. 0.46ms from Ashburn, US
173.73.78.104 AS701 Verizon Business 2.18ms from Ashburn, US
71.28.137.152 AS7029 Windstream Communications LLC 0.30ms from Atlanta, US
217.15.170.136 AS47583 Hostinger International Limited 0.73ms from Boston, US
27.252.127.152 AS9500 One New Zealand Group Limited 5.57ms from Christchurch, NZ
68.62.72.216 AS7922 Comcast Cable Communications, LLC 8.22ms from Flint, US
34.40.61.168 AS396982 Google LLC 0.10ms from Frankfurt am Main, DE
1.251.61.200 AS9318 SK Broadband Co Ltd 5.62ms from Incheon, KR
62.43.145.8 AS6739 VODAFONE ONO, S.A. 4.94ms from Madrid, ES
74.105.106.168 AS701 Verizon Business 2.75ms from New York City, US
89.81.241.232 AS5410 Bouygues Telecom SA 1.66ms from Paris, FR
184.98.48.8 AS209 CenturyLink Communications, LLC 2.48ms from Phoenix, US
69.9.136.24 AS36012 HUNTER COMMUNICATIONS 7.10ms from Portland, US

Traceroute

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

$
traceroute -a -n -q1 203.170.221.1
traceroute to 203.170.221.1 (203.170.221.1): 64 hops max, 52 byte packets
1 [AS23884] 103.76.182.1 0.395 ms
2 *
3 [AS45458] 103.48.12.65 0.878 ms
4 *
5 [AS133481] 49.228.4.57 1.695 ms
6 [AS133481] 49.228.4.99 2.398 ms
7 [AS133481] 58.64.61.1 10.574 ms
Measurement taken from IPinfo ProbeNet in Bangkok, TH
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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs