1. All IP Ranges
  2. 103.0.0.0/8
  3. 103.15.0.0/16
  4. AS45910  | 103.15.21.0/24

103.15.21.0/24

AS45910  ·  i-System Technology Limited

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Summary

Country Hong Kong
Domain 01link.net
ASN AS45910
Registry APNIC
ID IDC-01-HK

WHOIS Details

inetnum:        103.15.21.0 - 103.15.21.255
netname:        IDC-01-HK
descr:          01Link Network Services Limited
country:        HK
admin-c:        NA296-AP
tech-c:         NA296-AP
abuse-c:        AI530-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-HK-ISYSTEMTECH
mnt-irt:        IRT-ISYSTEMTECH-HK
last-modified:  2022-04-14T01:56:48Z
source:         APNIC

irt:            IRT-ISYSTEMTECH-HK
address:        Tsuen Wan, Hong Kong
e-mail:         hostmaster@i-system.hk
abuse-mailbox:  hostmaster@i-system.hk
admin-c:        HM1244-AP
tech-c:         HM1244-AP
auth:           # Filtered
remarks:        hostmaster@i-system.hk was validated on 2025-08-12
mnt-by:         MAINT-HK-ISYSTEMTECH
last-modified:  2025-11-18T00:26:22Z
source:         APNIC

role:           ABUSE ISYSTEMTECHHK
country:        ZZ
address:        Tsuen Wan, Hong Kong
phone:          +000000000
e-mail:         hostmaster@i-system.hk
admin-c:        HM1244-AP
tech-c:         HM1244-AP
nic-hdl:        AI530-AP
remarks:        Generated from irt object IRT-ISYSTEMTECH-HK
remarks:        hostmaster@i-system.hk was validated on 2025-08-12
abuse-mailbox:  hostmaster@i-system.hk
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-12T22:55:19Z
source:         APNIC

role:           Network Administrator
address:        Hong Kong
country:        HK
phone:          +852-31065260
e-mail:         hostmaster@01link.net
admin-c:        NA296-AP
tech-c:         NA296-AP
nic-hdl:        NA296-AP
mnt-by:         MAINT-01LINK-HK
last-modified:  2012-08-14T08:20:16Z
source:         APNIC

route:          103.15.21.0/24
origin:         AS45910
descr:          01Link Network Services Limited
mnt-by:         MAINT-HK-ISYSTEMTECH
last-modified:  2022-04-13T23:52:01Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 103.15.0.0/16

Range ASN Company Num of IPs
103.15.148.0/22 AS17551 Anycast Holdings Pty Ltd 1,024
103.15.0.0/22 AS9371 SAKURA Internet Inc. 1,024
103.15.80.0/22 AS140641 YOTTA NETWORK SERVICES PRIVATE LIMITED 1,024
103.15.244.0/22 AS58717 Summit Communications Ltd 1,024
103.15.48.0/22 AS45538 Mat Bao Corp 1,024
103.15.252.0/22 AS24186 RailTel Corporation is an Internet Service Provider 1,024
103.15.228.0/22 AS132215 POWERGRID TELESERVICES LIMITED 1,024
103.15.96.0/22 AS23724 Aliyun Computing Co., LTD 1,024
103.15.204.0/22 AS24130 TPG Internet Pty Ltd. 1,024
103.15.184.0/22 AS2519 Green Net co ltd 1,024
103.15.108.0/22 AS2519 Neomet Aoyama BLDG.3F 2-7-13 Shibuya 1,024
103.15.144.0/22 AS58690 140 Srirachanakorn 1 Rd 1,024
103.15.152.0/22 AS56304 The Total Team Limited 1,024
103.15.116.0/22 AS15412 AMDIA Inc. 1,024
103.15.188.0/22 AS17939 miyazaki cabletelevision network Co.,LTD 1,024
103.15.28.0/22 AS55639 Asia Web Services Ltd 1,024
103.15.100.0/22 AS4628 Pacific Internet Pte Ltd 1,024
103.15.4.0/22 AS4859 JinCheng Information Center 1,024
103.15.212.0/23 AS150336 D-Load Network 512
103.15.222.0/23 AS149137 TAN THANH AN INTERNATIONAL TRADE DEVELOPMENT COMPANY LIMITED 512
103.15.92.0/23 AS18094 Tokyo Cable Network.,Inc. 512
103.15.156.0/23 AS154024 FLEXCLOUD SERVICES 512
103.15.156.0/23 AS153473 FLEXCLOUD SERVICES 512
103.15.236.0/23 AS152699 SHOCKBYTE-MEL-AU 512
103.15.94.0/23 AS63737 PTH INFORMATION TECHNOLOGY COMPANY LIMITED 512
103.15.88.0/23 AS150698 WIX CLOUD COMPANY LIMITED 512
103.15.36.0/23 AS58499 CV TIKA UTAMA 512
103.15.224.0/23 AS58695 Unicef Bangladesh, 512
103.15.90.0/23 AS45899 JUPITEK SOLUTION JOINT STOCK COMPANY 512
103.15.126.0/23 AS55850 Mercury NZ Limited 512
103.15.238.0/23 AS58697 G/38 Qala e Mosa Shaheed Square , 512
103.15.181.0/24 AS23881 UDomain Web Hosting Co.Ltd 256
103.15.180.0/24 AS23881 UDomain Web Hosting Company Limited 256
103.15.171.0/24 AS201755 Squiz UK Limited - Newbury Network 256
103.15.250.0/24 AS132388 Intuit India 256
103.15.170.0/24 AS201755 Squiz UK Limited - Ash Network 256
103.15.226.0/24 AS136052 PT Cloud Hosting Indonesia 256
103.15.234.0/24 AS38719 Vodien Internet Solutions Pte Ltd 256
103.15.174.0/24 AS38511 Alocated Reserve 256
103.15.218.0/24 AS133380 netconfig 256
103.15.159.0/24 AS132378 MERINO INDUSTRIES LIMITED 256
103.15.142.0/24 AS132306 MOS 5 TEL LIMITED 256
103.15.173.0/24 AS38511 Alocated Reserve 256
103.15.123.0/24 AS38478 SunnyVision Limited Internet Service Provider, Hong Kong Room 604, WellTech Centre Pat Tat Street, San Po Kong 256
103.15.122.0/24 AS38478 SunnyVision Limited Internet Service Provider, Hong Kong Room 604, WellTech Centre Pat Tat Street, San Po Kong 256
103.15.121.0/24 AS38478 SunnyVision Limited Internet Service Provider, Hong Kong Room 604, WellTech Centre Pat Tat Street, San Po Kong 256
103.15.217.0/24 AS133380 linetransmit 256
103.15.175.0/24 AS38511 Alocated Reserve 256
103.15.120.0/24 AS38478 SunnyVision Limited Internet Service Provider, Hong Kong Room 604, WellTech Centre Pat Tat Street, San Po Kong 256
103.15.216.0/24 AS133380 WIFI connecting 256

Hosted domains

There are 502 domain names hosted across 22 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
103.15.21.10 holidayvodka.com 177
103.15.21.30 sensesgrouphk.com 156
103.15.21.20 mugan.com.hk 124
103.15.21.110 marketplacewineawards.com 14
103.15.21.130 homeopathy.com.hk 10
103.15.21.111 hkmc.hk 5
103.15.21.108 aliceng.com 2
103.15.21.21 1010-style.com 1
103.15.21.102 esdcarbon.com 1
103.15.21.116 intechdesign.com.hk 1
103.15.21.129 smosportal.com 1
103.15.21.112 gcds2025hk.com 1
103.15.21.109 ihhqualitysummit2025.com 1
103.15.21.103 ehubdata.hk 1
103.15.21.119 jecycle.com.hk 1
103.15.21.107 ownaccount.org 1
103.15.21.126 i-design.hk 1
103.15.21.117 ptcog-ao2025.hk 1
103.15.21.125 digitalive.hk 1
103.15.21.118 peegaboo.online 1

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

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

IP Address ASN Details
103.15.21.254 AS45910 i-System Technology Limited 1.48ms 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
95.110.184.104 AS31034 Aruba S.p.A. 0.33ms from Arezzo, IT
181.222.182.8 AS28573 Claro NXT Telecomunicacoes Ltda 12.10ms from Brasilia, BR
91.55.41.56 AS3320 Deutsche Telekom AG 8.35ms from Frankfurt am Main, DE
211.117.200.200 AS9318 SK Broadband Co Ltd 6.46ms from Incheon, KR
46.208.188.136 AS6871 Plusnet 2.72ms from London, GB
38.55.50.200 AS8796 FASTNET DATA INC 0.28ms from Los Angeles, US
13.37.129.24 AS16509 Amazon.com, Inc. 0.17ms from Paris, FR
3.224.117.24 AS14618 Amazon.com, Inc. 0.23ms from Reston, US
91.122.193.232 AS12389 PJSC Rostelecom 17.41ms from Saint Petersburg, RU
61.16.11.120 AS134078 NETPLUZ HOLDINGS PRIVATE LIMITED 0.79ms from Singapore, SG
13.210.59.216 AS16509 Amazon.com, Inc. 0.14ms from Sydney, AU
5.138.201.184 AS12389 PJSC Rostelecom 14.38ms from Tbilisi, GE
42.56.228.232 AS4837 CHINA UNICOM China169 Backbone 8.01ms from Tieling, CN
116.82.41.184 AS2527 Sony Network Communications Inc. 1.29ms from Tokyo, JP
87.214.231.56 AS13127 Odido Netherlands B.V. 6.23ms from Amsterdam, NL
20.46.244.248 AS8075 Microsoft Corporation 0.19ms from Des Moines, US
36.111.185.56 AS58519 Cloud Computing Corporation 0.25ms from Guiyang, CN
79.196.181.232 AS3320 Deutsche Telekom AG 1.84ms from Hamburg, DE
123.17.78.40 AS45899 VNPT Corp 1.93ms from Hanoi, VN
219.249.89.136 AS9318 SK Broadband Co Ltd 7.25ms from Incheon, KR
1.120.156.216 AS1221 Telstra Limited 12.16ms from Melbourne, AU
79.56.45.88 AS3269 Telecom Italia S.p.A. 5.23ms from Milan, IT
187.90.172.24 AS26599 TELEFÔNICA BRASIL S.A 4.31ms from Osasco, BR
18.210.36.24 AS14618 Amazon.com, Inc. 0.20ms from Reston, US
201.116.113.168 AS8151 UNINET 3.09ms from Santiago de Queretaro, MX

Traceroute

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

$
traceroute -a -n -q1 -f5 103.15.21.22
traceroute to 103.15.21.22 (103.15.21.22): 64 hops max, 52 byte packets
5 [] 123.255.90.219 17.075 ms
6 [AS45910] 103.15.21.22 6.101 ms
Measurement taken from IPinfo ProbeNet in Hong Kong, HK
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.

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