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
95.61.87.149 AS12430 VODAFONE ESPANA S.A.U. 5.79ms from Barcelona, ES
34.172.187.229 AS396982 Google LLC 0.11ms from Council Bluffs, US
190.56.135.21 AS14754 TELECOMUNICACIONES DE GUATEMALA, SOCIEDAD ANONIMA 3.78ms from Guatemala City, GT
150.207.184.181 AS38809 Vocus Advanced Services 0.42ms from Melbourne, AU
207.246.117.117 AS20473 The Constant Company, LLC 0.13ms from Miami, US
69.254.123.101 AS7922 Comcast Cable Communications, LLC 10.12ms from Miami, US
23.1.16.37 AS16625 Akamai Technologies, Inc. 0.69ms from Osaka, JP
175.109.36.197 AS2516 KDDI CORPORATION 4.18ms from Osaka, JP
174.26.219.53 AS209 CenturyLink Communications, LLC 3.02ms from Phoenix, US
67.133.62.5 AS18980 Peace Health 3.29ms from Portland, US
54.230.244.229 AS16509 Amazon.com, Inc. 0.10ms from Secaucus, US
36.50.35.101 AS151958 Sorb Security PTE. LTD. 1.39ms from Singapore, SG
36.227.74.245 AS3462 Data Communication Business Group 1.25ms from Taipei, TW
121.103.165.53 AS2527 Sony Network Communications Inc. 13.90ms from Tokyo, JP
102.153.10.37 AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom) 13.69ms from Tunis, TN
122.170.55.85 AS24560 Bharti Airtel Ltd., Telemedia Services 4.03ms from Ahmedabad, IN
91.194.136.181 AS34756 NEP Media Solutions B.V. 0.67ms from Amsterdam, NL
51.124.160.197 AS8075 Microsoft Corporation 0.31ms from Amsterdam, NL
65.27.27.213 AS10796 Charter Communications Inc 12.01ms from Columbus, US
142.11.195.149 AS54290 Hostwinds LLC. 0.21ms from Dallas, US
203.186.82.101 AS9269 Hong Kong Broadband Network Ltd. 0.83ms from Hong Kong, HK
193.140.109.5 AS5474 TOBB Economics and Technology University 7.28ms from Istanbul, TR
116.55.250.101 AS134765 CHINANET Yunnan province IDC1 network 0.60ms from Kunming, CN
62.228.101.181 AS6866 Cyprus Telecommunications Authority 2.40ms from Larnaca, CY
67.129.31.85 AS209 CenturyLink Communications, LLC 0.70ms from Miami, 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 121.203.118.167
traceroute to 121.203.118.167 (121.203.118.167): 6 hops max, 52 byte packets
1 [AS15169] 72.14.239.92 200.405 ms
2 *
3 [AS17924] 203.78.42.167 209.417 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Moncks Corner, 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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