121.203.248.0/21

AS17924  ·  SmarTone Mobile Communications Ltd

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Summary

Country Hong Kong
Domain smartone.com
ASN AS17924
Parent Range 121.202.0.0/15
Registry APNIC
ID SMARTONE-MB

WHOIS Details

inetnum:        121.202.0.0 - 121.203.255.255
netname:        SMARTONE-MB
descr:          SmarTone Mobile Communications Ltd
descr:          Hong Kong
country:        HK
org:            ORG-SMCL2-AP
admin-c:        JY50-AP
tech-c:         EC9-AP
abuse-c:        AS2092-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-HK-SMARTM-AP
mnt-routes:     MAINT-HK-SMARTM-AP
mnt-irt:        IRT-SMARTMOBILE-HK
last-modified:  2020-05-16T06:32:37Z
source:         APNIC

irt:            IRT-SMARTMOBILE-HK
address:        31/F, Millennium City 2,
address:        378 Kwun Tong Road, Kwun Tong,
address:        Kowloon, Hong Kong
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        JY50-AP
tech-c:         EN211-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2025-08-27
mnt-by:         MAINT-HK-SMARTM-AP
last-modified:  2025-11-17T23:08:35Z
source:         APNIC

organisation:   ORG-SMCL2-AP
org-name:       Smartone Mobile communications Limited
org-type:       LIR
country:        HK
address:        31 / F , Millennium City 2
address:        378 Kwun Tong Road, Kwun Tong, Kowloon
phone:          +852-31282828
fax-no:         +852-25976556
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:50Z
source:         APNIC

role:           ABUSE SMARTMOBILEHK
country:        ZZ
address:        31/F, Millennium City 2,
address:        378 Kwun Tong Road, Kwun Tong,
address:        Kowloon, Hong Kong
phone:          +000000000
e-mail:         [email protected]
admin-c:        JY50-AP
tech-c:         EN211-AP
nic-hdl:        AS2092-AP
remarks:        Generated from irt object IRT-SMARTMOBILE-HK
remarks:        [email protected] was validated on 2025-08-27
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-27T00:45:01Z
source:         APNIC

person:         Eric Chan
nic-hdl:        EC9-AP
e-mail:         [email protected]
address:        31/F,Millennium City 2,
address:        378 Kwun Tong Road, Kwun Tong,
address:        Kowloon, Hong Kong
phone:          +852-31282298
fax-no:         +852-21683089
country:        HK
mnt-by:         MAINT-HK-EC9-AP
last-modified:  2009-12-09T10:21:18Z
source:         APNIC

person:         Johnny Yeung
nic-hdl:        JY50-AP
e-mail:         [email protected]
address:        31/F, Millennium City 2,
address:        378 Kwun Tong Road, Kwun Tong,
address:        Kowloon, Hong Kong
phone:          +852-28802618
fax-no:         +852-21683089
country:        HK
mnt-by:         MAINT-HK-JY50-AP
last-modified:  2009-12-09T08:10:00Z
source:         APNIC

route:          121.202.0.0/15
origin:         AS17924
descr:          Smartone Mobile communications Limited 31 / F , Millennium City 2 378 Kwun Tong Road, Kwun Tong, Kowloon
mnt-by:         MAINT-HK-SMARTM-AP
last-modified:  2021-04-22T07:22:28Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 121.203.248.0/21

Range ASN Company Num of IPs
121.202.0.0/15 AS17924 SmarTone Mobile Communications Ltd 131,072

Nearby Ranges

BGP prefixes that overlap with 121.203.0.0/16

Range ASN Company Num of IPs
121.202.0.0/15 AS17924 SmarTone Mobile Communications Ltd 131,072

Hosted domains

There are 14 domain names hosted across 9 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
121.203.252.136 forestcity.com.hk 3
121.203.255.248 lwl.hk 3
121.203.251.129 hrstec.com.hk 2
121.203.253.58 infocats.info 1
121.203.248.192 vetexmotor.com 1
121.203.250.135 unionconcept.asia 1
121.203.248.43 intergalacticbamboo.com 1
121.203.249.255 bkeet.com 1
121.203.252.159 levinwongplatini1990.com 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

Pingable IPs

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

IP Address ASN Details
121.203.248.205 AS17924 SmarTone Mobile Communications Ltd 8.86ms from Hong Kong, HK
121.203.249.167 AS17924 SmarTone Mobile Communications Ltd 6.83ms from Hong Kong, HK
121.203.254.193 AS17924 SmarTone Mobile Communications Ltd 8.68ms from Hong Kong, HK
121.203.250.15 AS17924 SmarTone Mobile Communications Ltd 6.58ms from Hong Kong, HK
121.203.253.173 AS17924 SmarTone Mobile Communications Ltd 9.02ms from Hong Kong, HK
121.203.255.85 AS17924 SmarTone Mobile Communications Ltd 9.01ms from Hong Kong, HK
121.203.251.239 AS17924 SmarTone Mobile Communications Ltd 7.25ms from Hong Kong, HK
121.203.252.34 AS17924 SmarTone Mobile Communications Ltd 6.85ms 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
95.69.11.133 AS42863 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 9.40ms from Braga, PT
34.76.173.85 AS396982 Google LLC 0.14ms from Brussels, BE
84.181.126.37 AS3320 Deutsche Telekom AG 6.71ms from Frankfurt am Main, DE
91.43.178.181 AS3320 Deutsche Telekom AG 3.47ms from Hamburg, DE
77.0.136.5 AS6805 Telefonica Germany GmbH & Co.OHG 2.31ms from Hamburg, DE
113.170.54.101 AS45899 VNPT Corp 5.30ms from Ho Chi Minh City, VN
221.133.36.213 AS134809 ViewQwest Sdn. Bhd. 0.38ms from Kuala Lumpur, MY
107.145.217.69 AS33363 Charter Communications, Inc 11.56ms from Miami, US
83.159.122.69 AS12322 Free SAS 10.52ms from Paris, FR
194.206.195.213 AS3215 Orange S.A. 0.92ms from Paris, FR
81.249.185.133 AS3215 Orange S.A. 1.76ms from Paris, FR
112.244.44.213 AS4837 CHINA UNICOM China169 Backbone 4.66ms from Qingdao, CN
3.34.41.85 AS16509 Amazon.com, Inc. 0.53ms from Seoul, KR
116.87.45.245 AS55430 Starhub Ltd 1.33ms from Singapore, SG
42.238.77.101 AS4837 CHINA UNICOM China169 Backbone 4.09ms from Zhengzhou, CN
76.125.195.117 AS7922 Comcast Cable Communications, LLC 12.67ms from Ashburn, US
179.15.100.149 AS27831 Colombia Móvil 14.79ms from Bogotá, CO
207.231.109.21 AS40676 Psychz Networks 0.37ms from Dallas, US
67.214.126.21 AS12129 123.Net, Inc. 0.46ms from Detroit, US
13.79.192.149 AS8075 Microsoft Corporation 0.23ms from Dublin, IE
183.60.225.165 AS134763 CHINANET Guangdong province network 3.04ms from Guangzhou, CN
122.13.148.245 AS17622 China Unicom Guangzhou network 5.31ms from Guangzhou, CN
219.240.240.69 AS9318 SK Broadband Co Ltd 2.07ms from Incheon, KR
119.157.166.101 AS17557 Pakistan Telecommunication Company Limited 11.48ms from Karachi, PK
177.67.126.53 AS262518 LWSA S/A 0.21ms from Osasco, BR

Traceroute

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

$
traceroute -a -n -q1 -f3 121.203.253.3
traceroute to 121.203.253.3 (121.203.253.3): 64 hops max, 52 byte packets
3 [] 146.70.0.0 0.433 ms
4 [] 36.255.57.107 1.266 ms
5 *
6 *
7 *
8 [AS17924] 121.203.253.3 25.516 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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