121.203.80.0/21

AS17924  ·  SmarTone Mobile Communications Ltd

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

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 121.203.80.0/21

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
24.42.84.245 AS12975 PALTEL Autonomous System 7.60ms from Amman, JO
114.255.129.117 AS4808 China Unicom Beijing Province Network 2.69ms from Beijing, CN
88.218.139.5 AS13004 Serbian Open Exchange DOO 0.30ms from Belgrade, RS
34.140.183.213 AS396982 Google LLC 0.13ms from Brussels, BE
89.223.198.5 AS21334 One Hungary Ltd. 5.91ms from Budapest, HU
208.54.29.149 AS21928 T-Mobile USA, Inc. 1.50ms from Dallas, US
201.31.21.37 AS4230 CLARO S.A. 17.25ms from Fortaleza, BR
150.241.198.181 AS21840 WiredISP Inc. 0.38ms from Frankfurt am Main, DE
112.91.177.165 AS17816 China Unicom IP network China169 Guangdong province 4.63ms from Guangzhou, CN
61.155.114.5 AS4134 CHINANET-BACKBONE 4.72ms from Huai'an, CN
34.142.62.117 AS396982 Google LLC 0.11ms from London, GB
83.46.171.85 AS3352 TELEFONICA DE ESPANA S.A.U. 8.68ms from Madrid, ES
79.150.66.85 AS3352 TELEFONICA DE ESPANA S.A.U. 8.66ms from Madrid, ES
51.13.29.37 AS8075 Microsoft Corporation 0.61ms from Oslo, NO
213.192.29.101 AS16019 Vodafone Czech Republic a.s. 8.37ms from Prague, CZ
45.175.171.149 AS268916 Inffotreini Provedores e Informatica LTDA - ME 10.95ms from Sao Paulo, BR
34.95.180.101 AS396982 Google LLC 0.11ms from Sao Paulo, BR
76.70.201.53 AS577 Bell Canada 14.73ms from Seattle, US
183.78.215.69 AS9698 LG HelloVision Corp. 4.42ms from Seoul, KR
114.6.45.85 AS4761 INDOSAT Internet Network Provider 2.30ms from Singapore, SG
93.105.254.53 AS29314 VECTRA S.A. 13.76ms from Warsaw, PL
52.224.86.133 AS8075 Microsoft Corporation 0.59ms from Ashburn, US
155.138.214.213 AS20473 The Constant Company, LLC 0.15ms from Atlanta, US
61.51.214.149 AS4808 China Unicom Beijing Province Network 2.89ms from Beijing, CN
35.164.222.149 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US

Traceroute

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

$
traceroute -a -n -q1 -f2 -m6 121.203.85.172
traceroute to 121.203.85.172 (121.203.85.172): 6 hops max, 52 byte packets
2 [AS43513] 91.203.69.73 51.179 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Riga, LV
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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs