121.203.120.0/21

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 121.203.120.0/21

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
130.37.253.5 AS1103 SURF B.V. 0.79ms from Amsterdam, NL
97.242.226.165 AS6167 Verizon Business 8.20ms from Chicago, US
86.141.64.149 AS2856 British Telecommunications PLC 1.92ms from Erith, GB
185.249.251.5 AS9009 M247 Europe SRL 0.28ms from Frankfurt am Main, DE
95.113.182.5 AS6805 Telefonica Germany GmbH & Co.OHG 1.06ms from Hamburg, DE
223.122.246.149 AS137872 China Mobile Hong Kong Company Limited 3.20ms from Hong Kong, HK
95.134.1.85 AS9304 HGC Global Communications Limited 0.97ms from Hong Kong, HK
61.177.107.245 AS138950 Jiangsu Wuxi International IDC network 5.79ms from Huai'an, CN
117.65.53.5 AS4134 CHINANET-BACKBONE 9.19ms from Huai'an, CN
178.255.123.69 AS34467 JSC Telephone Company Sotcom 4.45ms from Moscow, RU
5.228.36.181 AS42610 PJSC Rostelecom 1.28ms from Moscow, RU
171.105.87.197 AS4134 CHINANET-BACKBONE 2.22ms from Nanning, CN
63.155.19.133 AS209 CenturyLink Communications, LLC 18.26ms from Portland, US
34.207.103.21 AS14618 Amazon.com, Inc. 0.52ms from Reston, US
98.202.165.5 AS7922 Comcast Cable Communications, LLC 9.50ms from Salt Lake City, US
119.66.170.85 AS17858 LG POWERCOMM 1.97ms from Seoul, KR
113.235.239.133 AS4837 CHINA UNICOM China169 Backbone 9.63ms from Tieling, CN
126.216.49.149 AS17676 SoftBank Corp. 3.18ms from Tokyo, JP
35.93.79.53 AS16509 Amazon.com, Inc. 0.59ms from Boardman, US
61.188.26.85 AS4134 CHINANET-BACKBONE 4.88ms from Chengdu, CN
59.37.144.245 AS4134 CHINANET-BACKBONE 2.33ms from Guangzhou, CN
211.195.217.37 AS4766 Korea Telecom 0.97ms from Incheon, KR
112.107.145.21 AS6619 SamsungSDS Inc. 1.85ms from Incheon, KR
95.79.57.229 AS42682 JSC ER-Telecom Holding 6.26ms from Moscow, RU
122.175.150.133 AS24560 Bharti Airtel Ltd., Telemedia Services 16.62ms from Mumbai, IN

Traceroute

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

$
traceroute -a -n -q1 -f2 -m6 121.203.121.149
traceroute to 121.203.121.149 (121.203.121.149): 6 hops max, 52 byte packets
2 [AS47447] 212.83.33.9 0.667 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Frankfurt am Main, DE
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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