121.203.96.0/21

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 121.203.96.0/21

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
213.157.60.21 AS8393 "ASTEL" JSC 1.67ms from Astana, KZ
69.252.189.181 AS7922 Comcast Cable Communications, LLC 14.00ms from Atlanta, US
93.87.73.133 AS8400 TELEKOM SRBIJA a.d. 0.41ms from Belgrade, RS
44.247.182.53 AS16509 Amazon.com, Inc. 0.23ms from Boardman, US
98.137.218.133 AS36646 Yahoo Holdings Inc. 10.07ms from Chicago, US
37.203.2.229 AS6876 TENET Scientific Production Enterprise LLC 3.54ms from Chisinau, MD
193.1.12.245 AS1213 HEAnet CLG 0.38ms from Dublin, IE
171.248.174.133 AS7552 Viettel Group 1.05ms from Ho Chi Minh City, VN
47.75.184.85 AS45102 Alibaba (US) Technology Co., Ltd. 1.39ms from Hong Kong, HK
119.116.2.149 AS4837 CHINA UNICOM China169 Backbone 4.75ms from Liaoyang, CN
174.67.215.5 AS22773 Cox Communications Inc. 6.00ms from Los Angeles, US
79.45.243.149 AS3269 Telecom Italia S.p.A. 5.23ms from Milan, IT
202.171.145.133 AS2514 NTT PC Communications, Inc. 2.28ms from Osaka, JP
119.167.149.181 AS4837 CHINA UNICOM China169 Backbone 0.32ms from Qingdao, CN
3.214.98.101 AS14618 Amazon.com, Inc. 0.23ms from Reston, US
147.146.244.69 AS396982 Google LLC 0.09ms from Rio de Janeiro, BR
46.105.188.197 AS16276 OVH SAS 0.05ms from Roubaix, FR
62.148.57.229 AS13243 TIETOEVRY NORWAY AS 3.92ms from Sandefjord, NO
20.206.65.165 AS8075 Microsoft Corporation 0.19ms from Sao Paulo, BR
112.186.92.101 AS4766 Korea Telecom 1.66ms from Seoul, KR
193.228.104.21 AS30739 Lenzing AG 5.50ms from Vienna, AT
178.114.218.181 AS8437 Hutchison Drei Austria GmbH 9.29ms from Vienna, AT
62.112.16.21 AS200869 Techno1 SRL 4.24ms from Amsterdam, NL
16.144.191.5 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
173.76.9.133 AS701 Verizon Business 2.01ms from Boston, US

Traceroute

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

$
traceroute -a -n -q1 -f5 -m8 121.203.100.186
traceroute to 121.203.100.186 (121.203.100.186): 8 hops max, 52 byte packets
5 [AS3356] 65.59.14.17 2.261 ms
6 *
7 *
8 *
Measurement taken from IPinfo ProbeNet in Piscataway, 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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