103.21.28.0/24

AS54187 · EZE Castle Integration Inc.

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Summary

Country	Hong Kong
Domain	eci.com
ASN	AS54187
Parent Range	103.21.28.0/23
Registry	APNIC
ID	ECI-HK

WHOIS Details

inetnum:        103.21.28.0 - 103.21.29.255
netname:        ECI-HK
descr:          Eze Castle Integration, Inc. - ECINet
country:        HK
admin-c:        MA507-AP
tech-c:         MA507-AP
abuse-c:        AE307-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-ECI-SG
mnt-irt:        IRT-ECI-SG
last-modified:  2022-10-26T14:54:03Z
source:         APNIC

irt:            IRT-ECI-SG
address:        529 Fifth Avenue, 7th Floor, New York, NY 10017
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        MA507-AP
tech-c:         MA507-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2025-08-07
remarks:        [email protected] was validated on 2025-08-11
mnt-by:         MAINT-ECI-SG
last-modified:  2025-11-18T00:27:48Z
source:         APNIC

role:           ABUSE ECISG
country:        ZZ
address:        529 Fifth Avenue, 7th Floor, New York, NY 10017
phone:          +000000000
e-mail:         [email protected]
admin-c:        MA507-AP
tech-c:         MA507-AP
nic-hdl:        AE307-AP
remarks:        Generated from irt object IRT-ECI-SG
remarks:        [email protected] was validated on 2025-08-07
remarks:        [email protected] was validated on 2025-08-11
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-11T14:42:57Z
source:         APNIC

role:           Mike Abbey
address:        529 Fifth Avenue, 7th Floor, New York, NY 10017
country:        US
phone:          +1-617-217-3006
fax-no:         +1-617-217-3001
e-mail:         [email protected]
admin-c:        MA507-AP
tech-c:         MA507-AP
nic-hdl:        MA507-AP
mnt-by:         MAINT-ECI-SG
last-modified:  2012-10-02T05:18:07Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 103.21.28.0/24

Range	ASN	Company	Num of IPs
103.21.28.0/23	AS54187	Eze Castle Integration, Inc. - ECINet	512

Nearby Ranges

BGP prefixes that overlap with 103.21.0.0/16

Range	ASN	Company	Num of IPs
103.21.236.0/22	AS12886	LEW TelNet GmbH	1,024
103.21.132.0/22	AS38835	Buroserv Australia Pty Ltd	1,024
103.21.156.0/22	AS134141	B2B Wholesale Pty Ltd	1,024
103.21.48.0/22	AS58750	ThinkEx Holdings Pty Ltd	1,024
103.21.128.0/22	AS58927	M.D.G. IT Pty Ltd	1,024
103.21.60.0/22	AS131148	Bank Of Taiwan	1,024
103.21.176.0/22	AS9808	China Mobile Communications Corporation	1,024
103.21.216.0/22	AS9905	PT. LINKNET,	1,024
103.21.184.0/22	AS132453	TRIPLE PLAY BROADBAND PRIVATE LIMITED	1,024
103.21.200.0/22	AS38091	LG HelloVision Corp.	1,024
103.21.0.0/22	AS38195	SUPERLOOP (AUSTRALIA) PTY LTD	1,024
103.21.148.0/22	AS38732	CMC Telecom Infrastructure Company	1,024
103.21.204.0/22	AS131746	PT. Medianusa Permana	1,024
103.21.116.0/22	AS138950	Shanghai ruisu Network Technology Co.,Ltd	1,024
103.21.252.0/22	AS131310	PLTPRO Data Centre Sdn. Bhd.	1,024
103.21.124.0/22	AS132423	Powai	1,024
103.21.84.0/22	AS45786	PT Hawk Teknologi Solusi	1,024
103.21.240.0/22	AS16509	Amazon Connection Technology Services (Beijing) Co., LTD	1,024
103.21.32.0/22	AS132434	Maxis Broadband Sdn Bhd	1,024
103.21.44.0/22	AS132435	A-6-3A, Block A, No. 2, Jalan PJU 1A/7A,	1,024
103.21.140.0/22	AS4811	Shanghai Meicheng Technology Information Co.,Ltd.	1,024
103.21.140.0/22	AS4812	Shanghai Meicheng Technology Information Co.,Ltd.	1,024
103.21.152.0/22	AS24028	REDtone Marketing Sdn. Bhd.	1,024
103.21.116.0/22	AS55994	Shanghai ruisu Network Technology Co.,Ltd	1,024
103.21.8.0/22	AS26658	UNIT 04, 7/F, BRIGHT WA, NO. 33 MONG KOK rd, kl, HK	1,024
103.21.40.0/22	AS58715	EarthTelcommunication	1,024
103.21.60.0/22	AS3462	Bank Of Taiwan	1,024
103.21.208.0/22	AS36352	Kaifeng Guochao E-commerce Co.Ltd.	1,024
103.21.120.0/22	AS131368	Petrovietnam oil corporation	1,024
103.21.58.0/23	AS394695	P.D.R Solutions FZC	512
103.21.68.0/23	AS136290	COUNTRY ONLINE SERVICES	512
103.21.70.0/23	AS150070	SPIRETEL TECHNOLOGIES PRIVATE LIMITED	512
103.21.28.0/23	AS54187	Eze Castle Integration, Inc. - ECINet	512
103.21.64.0/23	AS150982	Dinas Komunikasi, Informatika dan Persandian Kabupaten Kampar	512
103.21.100.0/23	AS140807	CUU LONG INTERNATIONAL DEVELOPMENT SERVICES AND TRADING JOINT STOCK COMPANY	512
103.21.96.0/23	AS140807	AN ANH PHONG COMPANY LIMITED	512
103.21.222.0/23	AS149829	Dream View Cable Network	512
103.21.18.0/23	AS58714	19th Floor, Tower C and D, Building No. 14, DLF Cyber City,	512
103.21.6.0/23	AS150069	CLOUDNET INTERNET SERVICE PVT LTD	512
103.21.92.0/24	AS45295	PT. Cipta Informatika Cemerlang	256
103.21.93.0/24	AS45295	PT. Cipta Informatika Cemerlang	256
103.21.94.0/24	AS45295	PT. Cipta Informatika Cemerlang	256
103.21.95.0/24	AS45295	PT. Cipta Informatika Cemerlang	256
103.21.180.0/24	AS45352	ONEBIRD (M) SDN. BHD.	256
103.21.181.0/24	AS45352	ONEBIRD (M) SDN. BHD.	256
103.21.182.0/24	AS45352	ONEBIRD (M) SDN. BHD.	256
103.21.183.0/24	AS45352	ONEBIRD (M) SDN. BHD.	256
103.21.84.0/24	AS45786	PT Hawk Teknologi Solusi	256
103.21.85.0/24	AS45786	PT. Hawk Teknologi Solusi	256
103.21.86.0/24	AS45786	PT. Hawk Teknologi Solusi	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

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

IP Address	ASN	Details
103.21.28.66	AS54187 EZE Castle Integration Inc.	`0.82ms` 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
192.73.223.8	AS393783 Seibels Technology Solutions, Inc.	`5.03ms` from Atlanta, US
212.57.44.88	AS8400 TELEKOM SRBIJA a.d.	`4.74ms` from Belgrade, RS
163.252.216.120	AS13977 Fidium	`3.31ms` from Boston, US
51.195.152.248	AS16276 OVH SAS	`0.08ms` from Erith, GB
217.249.204.136	AS3320 Deutsche Telekom AG	`8.34ms` from Frankfurt am Main, DE
194.6.209.72	AS47447 23M GmbH	`0.14ms` from Frankfurt am Main, DE
77.105.194.120	AS35706 Net at Once Sweden AB	`1.63ms` from Goeteborg, SE
101.99.38.88	AS45903 CMC Telecom Infrastructure Company	`0.70ms` from Hanoi, VN
99.13.1.88	AS7018 AT&T Enterprises, LLC	`7.95ms` from Kansas City, US
78.145.238.200	AS13285 TalkTalk Communications Limited	`5.14ms` from Manchester, GB
16.27.6.232	AS16509 Amazon.com, Inc.	`0.64ms` from Melbourne, AU
5.142.212.232	AS12389 PJSC Rostelecom	`17.43ms` from Saint Petersburg, RU
61.67.178.40	AS18042 Koos Broadband Telecom	`1.43ms` from Taipei, TW
128.82.35.136	AS1201 Old Dominion University	`5.93ms` from Ashburn, US
94.198.165.24	AS28747 Easyhost BVBA	`0.48ms` from Brussels, BE
109.136.223.168	AS5432 Proximus NV	`1.18ms` from Brussels, BE
45.244.121.216	AS24863 Link Egypt (Link.NET)	`17.58ms` from Cairo, EG
150.134.244.8	AS30499 Youngstown State University	`6.52ms` from Columbus, US
115.77.119.120	AS7552 Viettel Group	`2.97ms` from Ho Chi Minh City, VN
83.34.193.136	AS3352 TELEFONICA DE ESPANA S.A.U.	`12.63ms` from Madrid, ES
5.128.203.40	AS31200 Novotelecom Ltd	`1.35ms` from Novosibirsk, RU
112.71.138.120	AS17511 OPTAGE Inc.	`1.65ms` from Osaka, JP
76.146.195.104	AS7922 Comcast Cable Communications, LLC	`2.70ms` from Seattle, US
61.114.177.104	AS10006 SECOM Trust Systems Co.,Ltd.	`0.74ms` from Tokyo, JP
125.47.251.248	AS4837 CHINA UNICOM China169 Backbone	`2.40ms` from Zhengzhou, CN

Traceroute

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

traceroute -a -n -q1 -f3 103.21.28.153

traceroute to 103.21.28.153 (103.21.28.153): 64 hops max, 52 byte packets

3 [AS3491] 63.223.31.186 1.64 ms

4 [AS3491] 63.218.57.222 1.226 ms

5 [AS54187] 103.21.28.153 1.379 ms

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

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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