121.203.0.0/20

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 121.203.0.0/20

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
111.167.162.4 AS4837 CHINA UNICOM China169 Backbone 5.35ms from Beijing, CN
34.77.177.36 AS396982 Google LLC 0.16ms from Brussels, BE
166.0.152.196 AS18526 DDPS Networks, LLC 0.26ms from Fremont, US
218.16.137.228 AS4134 CHINANET-BACKBONE 3.31ms from Guangzhou, CN
104.34.149.132 AS20001 Charter Communications Inc 4.62ms from Los Angeles, US
174.94.82.4 AS577 Bell Canada 1.80ms from Montreal, CA
58.70.198.228 AS17511 OPTAGE Inc. 2.09ms from Osaka, JP
203.145.232.4 AS4694 IDC Frontier Inc. 1.02ms from Osaka, JP
51.174.100.84 AS29695 Lyse Tele AS 7.32ms from Oslo, NO
83.195.228.148 AS3215 Orange S.A. 11.21ms from Paris, FR
13.66.147.148 AS8075 Microsoft Corporation 0.74ms from Quincy, US
14.61.149.100 AS4766 Korea Telecom 1.32ms from Seoul, KR
118.1.77.228 AS4713 NTT DOCOMO BUSINESS,Inc. 7.65ms from Tokyo, JP
176.66.201.116 AS8447 A1 Telekom Austria AG 10.35ms from Vienna, AT
85.145.198.196 AS50266 Odido Netherlands B.V. 4.44ms from Amsterdam, NL
95.99.169.116 AS50266 Odido Netherlands B.V. 4.78ms from Amsterdam, NL
62.234.172.116 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.96ms from Beijing, CN
217.252.179.196 AS3320 Deutsche Telekom AG 5.82ms from Hamburg, DE
171.224.206.228 AS7552 Viettel Group 1.99ms from Hanoi, VN
92.24.79.4 AS13285 TalkTalk Communications Limited 5.24ms from London, GB
77.75.63.4 AS201838 Community Fibre Limited 1.14ms from London, GB
23.1.21.84 AS16625 Akamai Technologies, Inc. 0.15ms from Madrid, ES
185.61.94.244 AS48166 FORTEX CJSC 0.62ms from Moscow, RU
126.110.151.132 AS17676 SoftBank Corp. 14.52ms from Osaka, JP
222.9.215.148 AS18126 Chubu Telecommunications Company, Inc. 5.93ms from Osaka, JP

Traceroute

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

$
traceroute -a -n -q1 -m6 121.203.7.32
traceroute to 121.203.7.32 (121.203.7.32): 6 hops max, 52 byte packets
1 [AS15169] 72.14.236.39 49.819 ms
2 *
3 [AS17924] 203.78.42.168 48.408 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Osaka, JP
On

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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.

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