121.0.16.0/21

AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.

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Summary

Country	China
Domain	alibaba-inc.com
ASN	AS37963
Parent Range	121.0.16.0/20
Registry	APNIC
ID	ALIBABA-CN-NET

WHOIS Details

inetnum:        121.0.16.0 - 121.0.31.255
netname:        ALIBABA-CN-NET
descr:          Hangzhou Alibaba Advertising Co.,Ltd.
descr:          No.699, Wangshang RD., Hangzhou, China
country:        CN
admin-c:        ZM678-AP
tech-c:         ZM877-AP
tech-c:         ZM876-AP
abuse-c:        AC1601-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-CNNIC-AP
mnt-irt:        IRT-ALIBABA-CN-NET-CN
mnt-lower:      MAINT-CNNIC-AP
mnt-routes:     MAINT-CNNIC-AP
last-modified:  2023-11-28T00:57:01Z
source:         APNIC

irt:            IRT-ALIBABA-CN-NET-CN
address:        No.699, Wangshang RD., Hangzhou, China
e-mail:         didong.jc@alibaba-inc.com
abuse-mailbox:  didong.jc@alibaba-inc.com
admin-c:        ZM678-AP
tech-c:         ZM678-AP
auth:           # Filtered
mnt-by:         MAINT-CNNIC-AP
last-modified:  2025-11-18T00:35:07Z
source:         APNIC

role:           ABUSE CNNICCN
country:        ZZ
address:        Beijing, China
phone:          +000000000
e-mail:         ipas@cnnic.cn
admin-c:        IP50-AP
tech-c:         IP50-AP
nic-hdl:        AC1601-AP
remarks:        Generated from irt object IRT-CNNIC-CN
remarks:        ipas@cnnic.cn is invalid
abuse-mailbox:  ipas@cnnic.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-19T17:20:32Z
source:         APNIC

person:         Shuo Yu
address:        5F, Builing D, the West Lake International Plaza of S&T
address:        No.391 Wen'er Road, Hangzhou City
address:        Zhejiang, China, 310099
country:        CN
phone:          +86-0571-85022600
e-mail:         anti-spam@list.alibaba-inc.com
nic-hdl:        ZM678-AP
mnt-by:         MAINT-CNNIC-AP
last-modified:  2021-04-13T23:21:57Z
source:         APNIC

person:         security trouble
e-mail:         abuse@alibaba-inc.com
address:        5th,floor,Building D,the West Lake International Plaza of S&T,391#Wen??r Road
address:        Hangzhou, Zhejiang, China
phone:          +86-0571-85022600
country:        CN
mnt-by:         MAINT-CNNIC-AP
nic-hdl:        ZM876-AP
last-modified:  2025-07-01T07:06:11Z
source:         APNIC

person:         Guowei Pan
address:        5F, Builing D, the West Lake International Plaza of S&T
address:        No.391 Wen'er Road, Hangzhou City
address:        Zhejiang, China, 310099
country:        CN
phone:          +86-0571-85022088-30763
fax-no:         +86-0571-85022600
e-mail:         abuse@alibaba-inc.com
nic-hdl:        ZM877-AP
mnt-by:         MAINT-CNNIC-AP
last-modified:  2025-07-01T07:05:46Z
source:         APNIC

route:          121.0.16.0/20
descr:          Hangzhou Alibaba Advertising Co.,Ltd.
country:        CN
origin:         AS37963
mnt-by:         MAINT-CNNIC-AP
last-modified:  2019-08-08T23:26:03Z
source:         APNIC

route:          121.0.16.0/20
descr:          Alibaba (US) Technology Co., Ltd.
country:        CN
origin:         AS45102
mnt-by:         MAINT-CNNIC-AP
last-modified:  2019-08-08T23:26:03Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 121.0.16.0/21

Range	ASN	Company	Num of IPs
121.0.16.0/20	AS37963	Hangzhou Alibaba Advertising Co.,Ltd.	4,096

Nearby Ranges

BGP prefixes that overlap with 121.0.0.0/16

Range	ASN	Company	Num of IPs
121.0.128.0/17	AS38661	Duruan	32,768
121.0.64.0/18	AS136897	Dotname Korea Corp	16,384
121.0.64.0/18	AS138195	Dotname Korea Corp	16,384
121.0.64.0/18	AS153997	Dotname Korea Corp	16,384
121.0.64.0/18	AS18328	Dotname Korea Corp	16,384
121.0.16.0/20	AS37963	Hangzhou Alibaba Advertising Co.,Ltd.	4,096
121.0.32.0/20	AS9595	NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION	4,096
121.0.0.0/21	AS7594	On Q	2,048
121.0.48.0/21	AS9595	NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION	2,048
121.0.60.0/23	AS154237	Swift Technology Pvt. Ltd.	512

Hosted domains

There are 29 domain names hosted across 10 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
121.0.16.7	tgracing.cn	11
121.0.20.19	chinakelma.com	3
121.0.18.176	alisoft-inc.com	2
121.0.18.8	alisoft.cn	1
121.0.17.92	alixueyuan.org	1

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

Read more

Pingable IPs

4 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
121.0.21.194	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`5.23ms` from Hangzhou, CN

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
213.75.19.181	AS8737 KPN B.V.	`0.84ms` from Amsterdam, NL
109.242.160.37	AS25472 Nova Telecommunications & Media Single Member S.A	`7.95ms` from Athens, GR
34.58.3.53	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
220.191.204.133	AS4134 CHINANET-BACKBONE	`12.15ms` from Hangzhou, CN
39.172.170.117	AS56041 China Mobile communications corporation	`4.79ms` from Hangzhou, CN
45.70.253.245	AS267611 TECHNO BYTES TELECOM	`8.46ms` from Joao Pessoa, BR
42.85.131.85	AS4837 CHINA UNICOM China169 Backbone	`5.88ms` from Liaoyang, CN
80.3.130.85	AS5089 Virgin Media Limited	`4.30ms` from London, GB
70.35.149.229	AS32034 SPEEDCAST LATAM INC.	`1.89ms` from Miami, US
99.169.67.133	AS7018 AT&T Enterprises, LLC	`17.93ms` from Miami, US
46.73.121.213	AS12714 PJSC MegaFon	`4.67ms` from Moscow, RU
187.101.34.21	AS27699 TELEFÔNICA BRASIL S.A	`2.23ms` from Osasco, BR
200.93.231.69	AS27947 Telconet S.A	`1.15ms` from Quito, EC
54.160.241.133	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
62.10.212.229	AS8070 Microsoft Corporation	`18.71ms` from San Antonio, US
182.124.185.117	AS4837 CHINA UNICOM China169 Backbone	`4.76ms` from Zhengzhou, CN
193.92.254.229	AS1241 Forthnet	`4.33ms` from Athens, GR
101.200.239.53	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.13ms` from Beijing, CN
221.192.37.133	AS4837 CHINA UNICOM China169 Backbone	`7.16ms` from Beijing, CN
93.87.213.5	AS8400 TELEKOM SRBIJA a.d.	`2.01ms` from Belgrade, RS
87.188.73.5	AS3320 Deutsche Telekom AG	`1.78ms` from Frankfurt am Main, DE
193.227.148.5	AS8794 Frankfurter Allgemeine Zeitung GmbH	`0.81ms` from Frankfurt am Main, DE
188.155.205.85	AS6730 Sunrise GmbH	`2.71ms` from Geneve, CH
183.56.65.69	AS4134 CHINANET-BACKBONE	`1.91ms` from Guangzhou, CN
190.110.223.165	AS22724 PUNTONET S.A.	`1.71ms` from Guayaquil, EC

Traceroute

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

traceroute -a -n -q1 -f3 121.0.21.198

traceroute to 121.0.21.198 (121.0.21.198): 64 hops max, 52 byte packets

3 [AS749] 11.94.147.81 2.926 ms

4 *

5 *

6 [AS37963] 119.38.221.229 6.244 ms

7 [AS37963] 121.0.21.198 5.81 ms

Measurement taken from

IPinfo ProbeNet in Hangzhou, CN

On November 14th 2025

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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