121.203.64.0/18

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 121.203.64.0/18

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
179.41.174.162 AS22927 Telefonica de Argentina 2.20ms from Buenos Aires, AR
81.31.28.66 AS3257 GTT Communications Inc. 0.41ms from Frankfurt am Main, DE
83.218.68.162 AS29468 InfraCom Managed Services AB 0.89ms from Goeteborg, SE
14.234.105.18 AS45899 VNPT Corp 2.13ms from Ho Chi Minh City, VN
1.239.89.242 AS9318 SK Broadband Co Ltd 1.90ms from Incheon, KR
195.87.57.2 AS15924 Vodafone Net Iletisim Hizmetler AS 3.80ms from Istanbul, TR
217.33.18.178 AS2856 British Telecommunications PLC 1.45ms from London, GB
86.111.188.146 AS33182 HostDime.com, Inc. 0.29ms from Los Angeles, US
190.249.210.82 AS13489 UNE EPM TELECOMUNICACIONES S.A. 15.55ms from Medellin, CO
194.25.175.242 AS3320 Deutsche Telekom AG 0.60ms from Nuernberg, DE
82.160.62.2 AS20960 TK Telekom sp. z o.o. 3.35ms from Poznan, PL
20.230.217.194 AS8075 Microsoft Corporation 0.28ms from Quincy, US
59.74.187.66 AS4538 China Education and Research Network Center 18.80ms from Shijiazhuang, CN
113.150.68.130 AS2516 KDDI CORPORATION 1.23ms from Tokyo, JP
65.95.189.2 AS577 Bell Canada 7.15ms from Toronto, CA
102.156.248.210 AS37705 TOPNET 2.30ms from Tunis, TN
130.239.242.210 AS2833 Umea University 0.41ms from Umea, SE
123.11.175.82 AS4837 CHINA UNICOM China169 Backbone 6.27ms from Zhengzhou, CN
132.45.123.226 AS668 United States Department of Defense (DoD) 0.58ms from Atlanta, US
207.172.68.34 AS6079 RCN 0.23ms from Boston, US
73.143.175.130 AS7922 Comcast Cable Communications, LLC 10.42ms from Boston, US
13.59.128.146 AS16509 Amazon.com, Inc. 0.14ms from Columbus, US
74.62.141.34 AS11427 Charter Communications Inc 12.37ms from Dallas, US
70.120.93.98 AS11427 Charter Communications Inc 7.50ms from Houston, US
200.75.175.146 AS22541 MEGALINK S.R.L. 0.40ms from La Paz, BO

Traceroute

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

$
traceroute -a -n -q1 -f3 -m7 121.203.83.209
traceroute to 121.203.83.209 (121.203.83.209): 7 hops max, 52 byte packets
3 [AS3257] 154.14.160.57 0.548 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Amsterdam, NL
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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