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:         [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 121.203.224.0/20

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

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

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

IP Address ASN Details
121.203.238.255 AS17924 SmarTone Mobile Communications Ltd 15.56ms from Hong Kong, HK
121.203.237.68 AS17924 SmarTone Mobile Communications Ltd 16.71ms from Hong Kong, HK
121.203.239.27 AS17924 SmarTone Mobile Communications Ltd 16.41ms from Hong Kong, HK
121.203.228.234 AS17924 SmarTone Mobile Communications Ltd 13.61ms from Hong Kong, HK
121.203.235.169 AS17924 SmarTone Mobile Communications Ltd 24.82ms from Hong Kong, HK
121.203.232.108 AS17924 SmarTone Mobile Communications Ltd 31.19ms from Hong Kong, HK
121.203.234.208 AS17924 SmarTone Mobile Communications Ltd 14.55ms from Hong Kong, HK
121.203.229.69 AS17924 SmarTone Mobile Communications Ltd 13.69ms from Hong Kong, HK
121.203.227.213 AS17924 SmarTone Mobile Communications Ltd 13.50ms from Hong Kong, HK
121.203.225.165 AS17924 SmarTone Mobile Communications Ltd 20.13ms from Hong Kong, HK
121.203.230.195 AS17924 SmarTone Mobile Communications Ltd 14.24ms from Hong Kong, HK
121.203.236.54 AS17924 SmarTone Mobile Communications Ltd 25.71ms from Hong Kong, HK
121.203.233.27 AS17924 SmarTone Mobile Communications Ltd 18.69ms from Hong Kong, HK
121.203.226.233 AS17924 SmarTone Mobile Communications Ltd 20.85ms from Hong Kong, HK
121.203.224.109 AS17924 SmarTone Mobile Communications Ltd 12.26ms 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
59.92.192.100 AS9829 National Internet Backbone 10.08ms from Bengaluru, IN
110.175.163.20 AS7545 TPG Telecom Limited 1.83ms from Brisbane, AU
216.123.213.196 AS852 TELUS Communications Inc. 0.63ms from Calgary, CA
116.169.123.180 AS4837 CHINA UNICOM China169 Backbone 5.75ms from Chengdu, CN
73.144.118.148 AS7922 Comcast Cable Communications, LLC 10.70ms from Flint, US
135.220.125.228 AS8075 Microsoft Corporation 0.34ms from Frankfurt am Main, DE
112.49.58.4 AS9808 China Mobile Communications Group Co., Ltd. 12.47ms from Fuzhou, CN
4.224.21.4 AS8075 Microsoft Corporation 0.15ms from Lohogaon, IN
148.139.104.212 AS16839 SERVICENOW, INC. 0.79ms from Mumbai, IN
148.76.21.228 AS6128 Cablevision Systems Corp. 7.89ms from Newark, US
52.217.108.116 AS16509 Amazon.com, Inc. 0.10ms from Reston, US
18.142.32.116 AS16509 Amazon.com, Inc. 0.09ms from Singapore, SG
111.248.196.228 AS3462 Data Communication Business Group 1.38ms from Taipei, TW
153.245.171.164 AS4713 NTT DOCOMO BUSINESS,Inc. 7.32ms from Tokyo, JP
196.186.118.68 AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom) 19.28ms from Tunis, TN
188.122.87.36 AS49544 i3D.net B.V 1.44ms from Amsterdam, NL
1.10.241.36 AS23969 TOT Public Company Limited 2.14ms from Bangkok, TH
70.77.89.132 AS6327 Shaw Communications 3.64ms from Calgary, CA
167.88.164.84 AS14956 RouterHosting LLC 0.19ms from Dallas, US
47.186.138.132 AS5650 Frontier Communications of America, Inc. 2.29ms from Dallas, US
201.4.163.20 AS7738 V tal 0.68ms from Fortaleza, BR
34.229.161.4 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
192.41.85.100 AS13767 DataBank Holdings, Ltd. 0.92ms from Salt Lake City, US
84.210.100.4 AS25400 Telia Norge AS 7.84ms from Sandefjord, NO
171.122.253.212 AS4837 CHINA UNICOM China169 Backbone 5.91ms from Taiyuan, CN

Traceroute

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

$
traceroute -a -n -q1 -m6 121.203.236.163
traceroute to 121.203.236.163 (121.203.236.163): 6 hops max, 52 byte packets
1 [AS15169] 72.14.236.39 189.927 ms
2 *
3 [AS17924] 203.78.42.168 197.358 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Toronto, CA
On

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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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