121.203.64.0/21

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:         abuse@ismart.net
abuse-mailbox:  abuse@ismart.net
admin-c:        JY50-AP
tech-c:         EN211-AP
auth:           # Filtered
remarks:        abuse@ismart.net 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:         abuse@ismart.net
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:         abuse@ismart.net
admin-c:        JY50-AP
tech-c:         EN211-AP
nic-hdl:        AS2092-AP
remarks:        Generated from irt object IRT-SMARTMOBILE-HK
remarks:        abuse@ismart.net was validated on 2025-08-27
abuse-mailbox:  abuse@ismart.net
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-27T00:45:01Z
source:         APNIC

person:         Eric Chan
nic-hdl:        EC9-AP
e-mail:         ericchan@ismart.net
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:         johnnyyeung@ismart.net
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 121.203.64.0/21

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
2.135.123.69 AS9198 JSC Kazakhtelecom 14.19ms from Almaty, KZ
85.10.135.69 AS20857 Signet B.V. 2.00ms from Amsterdam, NL
75.244.5.85 AS6167 Verizon Business 18.95ms from Chicago, US
34.69.23.133 AS396982 Google LLC 0.37ms from Council Bluffs, US
170.94.102.133 AS21852 State Of Arkansas, Division of Information Systems 10.59ms from Dallas, US
91.7.70.21 AS3320 Deutsche Telekom AG 6.65ms from Frankfurt am Main, DE
221.5.42.181 AS17816 China Unicom IP network China169 Guangdong province 8.27ms from Guangzhou, CN
112.158.79.245 AS17858 LG POWERCOMM 1.57ms from Incheon, KR
208.123.5.213 AS16904 Arvig Enterprises Inc. 6.36ms from Minneapolis, US
70.90.78.21 AS7922 Comcast Cable Communications, LLC 8.95ms from Minneapolis, US
37.214.201.197 AS6697 Republican Unitary Telecommunication Enterprise Beltelecom 5.98ms from Minsk, BY
200.33.224.117 AS6503 Axtel, S.A.B. de C.V. 1.14ms from Monterrey, MX
157.130.120.37 AS701 Verizon Business 0.95ms from New York City, US
188.231.70.5 AS44407 Linkt SAS 0.89ms from Paris, FR
85.112.38.229 AS12389 PJSC Rostelecom 0.23ms from Samara, RU
183.122.107.37 AS4766 Korea Telecom 4.03ms from Seoul, KR
120.232.12.5 AS56040 China Mobile communications corporation 10.13ms from Shenzhen, CN
171.100.61.197 AS7470 TRUE INTERNET Co.,Ltd. 1.40ms from Bangkok, TH
113.11.27.133 AS7565 BDCOM-BD 1.01ms from Dhaka, BD
72.145.43.69 AS8075 Microsoft Corporation 0.19ms from Dublin, IE
87.147.6.229 AS3320 Deutsche Telekom AG 4.32ms from Duesseldorf, DE
217.254.200.133 AS3320 Deutsche Telekom AG 2.12ms from Frankfurt am Main, DE
193.182.129.85 AS60345 ixnt 0.26ms from Frankfurt am Main, DE
161.81.12.85 AS137872 China Mobile Hong Kong Company Limited 2.35ms from Hong Kong, HK
39.112.241.197 AS9318 SK Broadband Co Ltd 4.64ms from Incheon, KR

Traceroute

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

$
traceroute -a -n -q1 -f4 -m7 121.203.69.165
traceroute to 121.203.69.165 (121.203.69.165): 7 hops max, 52 byte packets
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Yerevan, AM
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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