121.203.112.0/21

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 121.203.112.0/21

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
71.81.253.117 AS20115 Charter Communications LLC 8.07ms from Atlanta, US
90.218.192.197 AS5607 Sky UK Limited 5.31ms from Erith, GB
116.29.187.165 AS4134 CHINANET-BACKBONE 7.95ms from Guangzhou, CN
218.23.59.117 AS4134 CHINANET-BACKBONE 7.57ms from Huai'an, CN
175.167.110.165 AS4837 CHINA UNICOM China169 Backbone 11.00ms from Liaoyang, CN
76.174.210.197 AS20001 Charter Communications Inc 6.43ms from Los Angeles, US
4.22.97.149 AS3356 Level 3 Parent, LLC 0.32ms from Los Angeles, US
212.42.52.21 AS48199 Tehno-Pro LLC 0.64ms from Moscow, RU
38.99.247.133 AS63023 GTHost 0.07ms from New York City, US
189.84.221.213 AS28173 Dinamica Telecomunicacoes Ltda 13.21ms from Osasco, BR
177.236.46.133 AS28509 Cablemas Telecomunicaciones SA de CV 13.81ms from Phoenix, US
122.4.246.165 AS4134 CHINANET-BACKBONE 4.66ms from Qingdao, CN
50.87.207.213 AS46606 Unified Layer 2.00ms from Salt Lake City, US
216.186.67.133 AS10430 Washington State K-20 Telecommunications Network 1.09ms from Seattle, US
183.101.23.85 AS4766 Korea Telecom 1.75ms from Seoul, KR
58.231.188.165 AS9318 SK Broadband Co Ltd 7.23ms from Seoul, KR
210.146.164.37 AS2519 ARTERIA Networks Corporation 3.10ms from Tokyo, JP
109.133.10.245 AS5432 Proximus NV 2.52ms from Brussels, BE
105.191.119.117 AS36925 MEDITELECOM 17.78ms from Casablanca, MA
116.182.4.5 AS137539 China Unicom 7.66ms from Changchun, CN
162.233.26.101 AS7018 AT&T Enterprises, LLC 2.47ms from Dallas, US
218.0.49.5 AS58461 CT-HangZhou-IDC 5.46ms from Hangzhou, CN
49.65.125.213 AS134756 CHINANET Nanjing Jishan IDC network 3.19ms from Huai'an, CN
101.1.5.5 AS151664 DCConnect Sdn. Bhd. 1.73ms from Jakarta, ID
172.249.23.133 AS20001 Charter Communications Inc 4.40ms from Los Angeles, US

Traceroute

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

$
traceroute -a -n -q1 -m6 121.203.112.140
traceroute to 121.203.112.140 (121.203.112.140): 6 hops max, 52 byte packets
2 *
3 [AS2914] 129.250.9.183 1.284 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Bucharest, RO
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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