103.5.219.0/24

AS137538 · Caldawin Software Technology Company Limited

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Summary

Country	Macao
Domain	caldawin.com
ASN	AS137538
Parent Range	103.5.218.0/23
Registry	APNIC
ID	CSTCL-MO

WHOIS Details

inetnum:        103.5.218.0 - 103.5.219.255
netname:        CSTCL-MO
descr:          Caldawin Software Technology Company Limited
country:        MO
org:            ORG-CSTC2-AP
admin-c:        CSTC2-AP
tech-c:         CSTC2-AP
abuse-c:        AC2617-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:      MAINT-CSTCL-MO
mnt-routes:     MAINT-CSTCL-MO
mnt-irt:        IRT-CSTCL-MO
last-modified:  2022-09-15T04:30:06Z
source:         APNIC

irt:            IRT-CSTCL-MO
address:        5 Andar A, Finance and IT Center of Macau, 70 Avenida Comercial de Macau, Macau Macau 999078
e-mail:         info@caldawin.com
abuse-mailbox:  info@caldawin.com
admin-c:        CSTC2-AP
tech-c:         CSTC2-AP
auth:           # Filtered
remarks:        info@caldawin.com was validated on 2025-07-21
mnt-by:         MAINT-CSTCL-MO
last-modified:  2025-11-18T00:36:24Z
source:         APNIC

organisation:   ORG-CSTC2-AP
org-name:       Caldawin Software Technology Company Limited
org-type:       LIR
country:        MO
address:        5 Andar A, Finance and IT Center of Macau
address:        70 Avenida Comercial de Macau
phone:          +853-6588-8368
e-mail:         info@caldawin.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:18:59Z
source:         APNIC

role:           ABUSE CSTCLMO
country:        ZZ
address:        5 Andar A, Finance and IT Center of Macau, 70 Avenida Comercial de Macau, Macau Macau 999078
phone:          +000000000
e-mail:         info@caldawin.com
admin-c:        CSTC2-AP
tech-c:         CSTC2-AP
nic-hdl:        AC2617-AP
remarks:        Generated from irt object IRT-CSTCL-MO
remarks:        info@caldawin.com was validated on 2025-07-21
abuse-mailbox:  info@caldawin.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-07-21T18:29:34Z
source:         APNIC

role:           Caldawin Software Technology Company Limited administrator
address:        5 Andar A, Finance and IT Center of Macau, 70 Avenida Comercial de Macau, Macau Macau 999078
country:        MO
phone:          +853-6588-8368
e-mail:         info@caldawin.com
admin-c:        CSTC2-AP
tech-c:         CSTC2-AP
nic-hdl:        CSTC2-AP
mnt-by:         MAINT-CSTCL-MO
last-modified:  2023-10-20T18:25:55Z
source:         APNIC

route:          103.5.218.0/23
origin:         AS137538
descr:          Caldawin Software Technology Company Limited 5 Andar A, Finance and IT Center of Macau 70 Avenida Comercial de Macau
mnt-by:         MAINT-CSTCL-MO
last-modified:  2022-09-15T05:08:35Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 103.5.219.0/24

Range	ASN	Company	Num of IPs
103.5.218.0/23	AS137538	Caldawin Software Technology Company Limited	512

Nearby Ranges

BGP prefixes that overlap with 103.5.0.0/16

Range	ASN	Company	Num of IPs
103.5.128.0/22	AS17573	SK Broadband Co Ltd	1,024
103.5.116.0/22	AS17408	M-SQUARE, Inc.	1,024
103.5.12.0/22	AS16276	2 Rue Kellermann	1,024
103.5.160.0/22	AS15412	Ginza 1-15-7 MAC Giza Bldg 3F	1,024
103.5.112.0/22	AS131459	Vijaya Comnet Private Limited	1,024
103.5.236.0/22	AS9930	TT DOTCOM SDN BHD	1,024
103.5.176.0/22	AS55894	Who's Next	1,024
103.5.4.0/22	AS55821	RADIUS TELECOMS, INC.	1,024
103.5.44.0/22	AS45634	Magna Hosting Ltd	1,024
103.5.100.0/22	AS38851	Chief Telecom Inc.	1,024
103.5.232.0/22	AS38592	Chittagong Online Limited.	1,024
103.5.180.0/22	AS132035	Computer Center	1,024
103.5.224.0/22	AS132042	Manux Networks Ltd	1,024
103.5.96.0/22	AS38333	Telcoinabox Operations Pty Ltd	1,024
103.5.208.0/22	AS38253	HTC International telecommunication joint stock company	1,024
103.5.188.0/22	AS38207	RAJESH DIGITAL & DATACOM PRIVATE LIMITED	1,024
103.5.140.0/22	AS131160	Wire and Wireless Co.,Ltd.	1,024
103.5.220.0/22	AS9304	PowerCom Network Hong Kong Ltd	1,024
103.5.156.0/22	AS18119	Capgemini New Zealand Limited	1,024
103.5.212.0/23	AS135516	Level , Suite 30102	512
103.5.0.0/23	AS132021	Kalibo Cable - Main	512
103.5.2.0/23	AS132021	Kalibo Cable - Boracay	512
103.5.218.0/23	AS137538	Caldawin Software Technology Company Limited	512
103.5.216.0/23	AS150316	PR Network	512
103.5.230.0/23	AS24441	CityLink Corporation, LTD	512
103.5.50.0/23	AS58381	Wow Internet Indonesia	512
103.5.228.0/23	AS58433	Corporate Office, Kamaladi	512
103.5.110.0/24	AS141226	Gecko Broadband	256
103.5.16.0/24	AS17483	using in Hyd noc	256
103.5.17.0/24	AS17483	using in Hyd noc	256
103.5.18.0/24	AS17483	using in Hyd noc	256
103.5.19.0/24	AS17483	using in Hyd noc	256
103.5.109.0/24	AS141226	Gecko Broadband	256
103.5.108.0/24	AS141226	Gecko Broadband	256
103.5.28.0/24	AS58631	Vista Group (NZ) Limited	256
103.5.230.0/24	AS24441	CityLink Corporation, LTD	256
103.5.231.0/24	AS24441	CityLink Corporation, LTD	256
103.5.23.0/24	AS2497	Videx Inc.	256
103.5.106.0/24	AS134778	Illawarra Retirement Trust	256
103.5.79.0/24	AS134753	29/F, Tower 6, The Gateway,	256
103.5.107.0/24	AS38320	PT. Maxindo Network	256
103.5.202.0/24	AS133594	World Phone Internet Services Pvt Ltd	256
103.5.105.0/24	AS132033	Lot 3, Jalan Teknologi 3/5, Taman Sains Selangor	256
103.5.25.0/24	AS132032	DTAC-WIFI-AP02	256
103.5.24.0/24	AS132032	DTAC-WIFI-AP01	256
103.5.44.0/24	AS45634	2F-36 No 163 Nanjing West Road	256
103.5.46.0/24	AS45634	MAINT-MAGNAHOSTINGLTD-TW	256
103.5.47.0/24	AS45634	MAINT-MAGNAHOSTINGLTD-TW	256
103.5.203.0/24	AS48011	Turunc Smart Bilgisayar Teknoloji Ve Dis Ticaret Limited Sirketi	256
103.5.78.0/24	AS132028	Aspire Systems India Private Ltd	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

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

IP Address	ASN	Details
103.5.219.212	AS137538 Caldawin Software Technology Company Limited	`1.20ms` from Hong Kong, HK

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
40.121.33.72	AS8075 Microsoft Corporation	`0.42ms` from Ashburn, US
94.66.169.72	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`1.40ms` from Athens, GR
73.20.232.136	AS7922 Comcast Cable Communications, LLC	`13.65ms` from Atlanta, US
203.151.24.88	AS4618 Internet Thailand Company Limited	`0.53ms` from Bangkok, TH
86.44.245.136	AS5466 Eircom Limited	`3.75ms` from Dublin, IE
87.181.28.40	AS3320 Deutsche Telekom AG	`7.58ms` from Frankfurt am Main, DE
209.54.77.216	AS11290 Cogeco Connexion inc	`7.90ms` from Montreal, CA
97.237.58.184	AS6167 Verizon Business	`9.37ms` from New York City, US
71.186.214.200	AS701 Verizon Business	`9.22ms` from New York City, US
95.170.157.184	AS25549 JSC Avantel	`4.87ms` from Novosibirsk, RU
217.83.6.120	AS3320 Deutsche Telekom AG	`2.23ms` from Nuernberg, DE
88.94.240.184	AS2119 Telenor Norge AS	`14.17ms` from Oslo, NO
73.15.106.72	AS7922 Comcast Cable Communications, LLC	`11.72ms` from Santa Clara, US
189.189.222.56	AS8151 UNINET	`4.23ms` from Santiago de Queretaro, MX
49.166.251.200	AS17858 LG POWERCOMM	`1.85ms` from Seoul, KR
14.49.174.184	AS4766 Korea Telecom	`10.11ms` from Seoul, KR
157.151.31.232	AS31898 Oracle Corporation	`0.18ms` from Vinhedo, BR
87.206.229.184	AS9141 P4 Sp. z o.o.	`3.56ms` from Warsaw, PL
104.45.29.8	AS8075 Microsoft Corporation	`0.22ms` from Amsterdam, NL
195.251.118.152	AS5408 National Infrastructures for Research and Technology S.A.	`1.13ms` from Athens, GR
125.236.189.136	AS4771 Spark New Zealand Trading Ltd.	`13.55ms` from Auckland, NZ
160.45.169.72	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`1.38ms` from Berlin, DE
152.202.7.120	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`12.45ms` from Bogota, CO
90.144.196.216	AS1257 Tele2 Sverige AB	`0.50ms` from Goeteborg, SE
102.22.35.232	AS327892 BETHNET cc	`3.98ms` from Johannesburg, ZA

Traceroute

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

traceroute -a -n -q1 -f3 103.5.219.1

traceroute to 103.5.219.1 (103.5.219.1): 64 hops max, 52 byte packets

3 [] 146.70.0.0 0.33 ms

4 *

5 [AS3491] 63.218.126.78 1.584 ms

6 *

7 [AS137538] 103.5.219.1 1.912 ms

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On January 19th 2026

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