121.203.48.0/20

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 121.203.48.0/20

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
78.54.68.52 AS6805 Telefonica Germany GmbH & Co.OHG 2.85ms from Berlin, DE
52.27.56.212 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
183.238.199.212 AS9808 China Mobile Communications Group Co., Ltd. 5.51ms from Guangzhou, CN
89.246.215.132 AS8881 1&1 Versatel GmbH 4.52ms from Hamburg, DE
95.237.201.244 AS3269 Telecom Italia S.p.A. 1.43ms from Milan, IT
34.98.200.180 AS396982 Google LLC 1.11ms from Mumbai, IN
68.200.161.148 AS33363 Charter Communications, Inc 8.41ms from Orlando, US
124.99.103.36 AS4713 NTT DOCOMO BUSINESS,Inc. 4.78ms from Osaka, JP
89.35.208.20 AS44407 Linkt SAS 1.63ms from Paris, FR
46.255.178.68 AS8218 Zayo Infrastructure France SA 0.57ms from Paris, FR
13.111.42.196 AS14340 Salesforce.com, Inc. 6.21ms from Phoenix, US
160.153.186.68 AS398101 GoDaddy.com, LLC 1.14ms from Phoenix, US
3.81.74.244 AS14618 Amazon.com, Inc. 0.56ms from Reston, US
177.11.121.148 AS262296 Windx Telecomunicações 12.45ms from Rio de Janeiro, BR
20.167.118.212 AS8075 Microsoft Corporation 0.66ms from Sydney, AU
126.57.212.212 AS17676 SoftBank Corp. 10.30ms from Tokyo, JP
110.132.213.212 AS9824 JCOM Co., Ltd. 11.39ms from Tokyo, JP
121.73.164.4 AS4768 One New Zealand Group Limited 13.88ms from Auckland, NZ
20.159.57.116 AS8070 Microsoft Corporation 0.70ms from Boydton, US
35.229.191.52 AS396982 Google LLC 0.17ms from Chang-hua, TW
74.36.101.116 AS5650 Frontier Communications of America, Inc. 14.23ms from Chicago, US
78.35.127.132 AS8422 NetCologne Gesellschaft fur Telekommunikation mbH 4.82ms from Duesseldorf, DE
102.115.221.4 AS23889 Mauritius Telecom Ltd 4.33ms from Ebene, MU
217.24.2.4 AS15844 true global communications GmbH 0.58ms from Frankfurt am Main, DE
80.221.189.132 AS1759 Telia Finland Oyj 0.99ms from Helsinki, FI

Traceroute

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

$
traceroute -a -n -q1 -f3 -m6 121.203.48.251
traceroute to 121.203.48.251 (121.203.48.251): 6 hops max, 52 byte packets
3 [AS39386] 159.0.184.50 1.233 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Jeddah, SA
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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