121.203.224.0/20

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:         abuse@ismart.net
abuse-mailbox:  abuse@ismart.net
admin-c:        JY50-AP
tech-c:         EN211-AP
auth:           # Filtered
remarks:        abuse@ismart.net 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:         abuse@ismart.net
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:         abuse@ismart.net
admin-c:        JY50-AP
tech-c:         EN211-AP
nic-hdl:        AS2092-AP
remarks:        Generated from irt object IRT-SMARTMOBILE-HK
remarks:        abuse@ismart.net was validated on 2025-08-27
abuse-mailbox:  abuse@ismart.net
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-27T00:45:01Z
source:         APNIC

person:         Eric Chan
nic-hdl:        EC9-AP
e-mail:         ericchan@ismart.net
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:         johnnyyeung@ismart.net
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 121.203.224.0/20

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 no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Pingable IPs

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

IP Address ASN Details
121.203.236.1 AS17924 SmarTone Mobile Communications Ltd 11.75ms from Hong Kong, HK
121.203.234.79 AS17924 SmarTone Mobile Communications Ltd 10.58ms from Hong Kong, HK
121.203.237.243 AS17924 SmarTone Mobile Communications Ltd 25.15ms from Hong Kong, HK
121.203.226.136 AS17924 SmarTone Mobile Communications Ltd 15.67ms from Hong Kong, HK
121.203.231.137 AS17924 SmarTone Mobile Communications Ltd 20.61ms from Hong Kong, HK
121.203.235.208 AS17924 SmarTone Mobile Communications Ltd 24.65ms from Hong Kong, HK
121.203.233.82 AS17924 SmarTone Mobile Communications Ltd 15.79ms from Hong Kong, HK
121.203.232.28 AS17924 SmarTone Mobile Communications Ltd 20.76ms from Hong Kong, HK
121.203.238.255 AS17924 SmarTone Mobile Communications Ltd 16.19ms from Hong Kong, HK
121.203.228.48 AS17924 SmarTone Mobile Communications Ltd 15.41ms from Hong Kong, HK
121.203.225.203 AS17924 SmarTone Mobile Communications Ltd 11.98ms from Hong Kong, HK
121.203.224.182 AS17924 SmarTone Mobile Communications Ltd 21.34ms 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
131.225.208.164 AS3152 Fermi National Accelerator Laboratory (Fermilab) 1.77ms from Chicago, US
159.71.93.100 AS5972 United States Department of Defense (DoD) 10.64ms from Dallas, US
108.197.95.68 AS7018 AT&T Enterprises, LLC 9.90ms from Dallas, US
110.9.237.52 AS9318 SK Broadband Co Ltd 1.44ms from Incheon, KR
3.35.151.244 AS16509 Amazon.com, Inc. 0.26ms from Seoul, KR
172.188.9.84 AS8075 Microsoft Corporation 0.59ms from Singapore, SG
14.3.182.84 AS4685 Asahi Net 10.78ms from Tokyo, JP
50.110.56.212 AS5650 Frontier Communications of America, Inc. 12.52ms from Chicago, US
3.125.119.196 AS16509 Amazon.com, Inc. 0.41ms from Frankfurt am Main, DE
183.166.18.196 AS4134 CHINANET-BACKBONE 9.07ms from Huai'an, CN
86.150.247.100 AS2856 British Telecommunications PLC 2.98ms from London, GB
109.71.174.164 AS3257 GTT Communications Inc. 0.48ms from London, GB
101.183.9.100 AS1221 Telstra Limited 3.23ms from Sydney, AU
54.66.231.132 AS16509 Amazon.com, Inc. 0.15ms from Sydney, AU
13.225.253.132 AS16509 Amazon.com, Inc. 1.37ms from Tel Aviv, IL
216.26.241.20 AS200373 3xK Tech GmbH 0.13ms from Toronto, CA
46.127.75.100 AS6730 Sunrise GmbH 3.51ms from Zuerich, CH
99.93.215.36 AS7018 AT&T Enterprises, LLC 8.28ms from Atlanta, US
58.21.154.100 AS4837 CHINA UNICOM China169 Backbone 4.47ms from Changchun, CN
98.63.32.180 AS7922 Comcast Cable Communications, LLC 5.47ms from Chicago, US
93.116.82.52 AS8926 Moldtelecom SA 0.99ms from Chisinau, MD
167.88.164.84 AS14956 RouterHosting LLC 0.18ms from Dallas, US
136.185.34.68 AS24560 Bharti Airtel Ltd., Telemedia Services 1.95ms from Delhi, IN
185.230.62.196 AS58182 Wix.com Ltd. 0.56ms from Dublin, IE
88.77.207.36 AS3209 Vodafone GmbH 15.77ms from Frankfurt am Main, DE

Traceroute

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

$
traceroute -a -n -q1 -f3 121.203.233.82
traceroute to 121.203.233.82 (121.203.233.82): 64 hops max, 52 byte packets
4 *
5 [] 36.255.56.179 0.514 ms
6 [] 36.255.57.73 1.46 ms
7 *
8 *
9 [AS17924] 121.203.233.82 167.564 ms
Measurement taken from IPinfo ProbeNet in Hong Kong, HK
On

What are IP address ranges?

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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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