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:         [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 121.203.48.0/20

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
198.134.151.4 AS398845 McLennan Community College 3.38ms from Dallas, US
37.51.195.4 AS3320 Deutsche Telekom AG 2.95ms from Frankfurt am Main, DE
118.71.57.116 AS18403 FPT Telecom Company 1.78ms from Hanoi, VN
114.203.167.68 AS9318 SK Broadband Co Ltd 4.90ms from Incheon, KR
115.42.66.4 AS132165 Connect Communications 0.94ms from Karachi, PK
88.3.68.228 AS3352 TELEFONICA DE ESPANA S.A.U. 0.95ms from Madrid, ES
70.44.41.52 AS3737 PenTeleData Inc. 11.72ms from New York City, US
122.250.97.68 AS18077 Yamaguchi Cable Vision Co.,Ltd 5.55ms from Osaka, JP
88.185.117.132 AS12322 Free SAS 8.76ms from Paris, FR
80.245.61.36 AS198545 FLEX NETWORK SARL 3.05ms from Paris, FR
142.252.115.68 AS16276 OVH SAS 0.36ms from Portland, US
39.126.157.100 AS7562 HCN Dongjak 3.06ms from Seoul, KR
126.79.244.228 AS17676 SoftBank Corp. 3.08ms from Tokyo, JP
72.38.36.116 AS7992 Cogeco Connexion Inc. 9.59ms from Toronto, CA
102.40.85.20 AS8452 TE-AS 6.63ms from Cairo, EG
210.212.118.52 AS9829 National Internet Backbone 1.33ms from Delhi, IN
36.94.152.180 AS7713 PT Telekomunikasi Indonesia 0.67ms from Jakarta, ID
204.234.202.52 AS11714 Network Nebraska 15.74ms from Lincoln, US
188.15.37.132 AS3269 Telecom Italia S.p.A. 4.27ms from Milan, IT
103.159.217.228 AS135709 Lightstorm Telecom Connectivity Private Limited 0.21ms from Mumbai, IN
87.170.79.116 AS3320 Deutsche Telekom AG 4.24ms from Nuernberg, DE
80.147.71.4 AS3320 Deutsche Telekom AG 4.64ms from Nuernberg, DE
218.81.69.84 AS4812 China Telecom (Group) 2.86ms from Shanghai, CN
89.155.230.68 AS2860 NOS COMUNICACOES, S.A. 7.83ms from Braga, PT
81.241.41.84 AS5432 Proximus NV 2.34ms from Brussels, BE

Traceroute

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

$
traceroute -a -n -q1 -m5 121.203.52.237
traceroute to 121.203.52.237 (121.203.52.237): 5 hops max, 52 byte packets
1 [AS7806] 204.27.195.252 37.442 ms
2 [AS7806] 216.229.23.44 4.146 ms
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Lincoln, US
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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