121.0.16.0/20

AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.

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Summary

Country	China
Domain	alibaba-inc.com
ASN	AS37963
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:         [email protected]
abuse-mailbox:  [email protected]
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:         [email protected]
admin-c:        IP50-AP
tech-c:         IP50-AP
nic-hdl:        AC1601-AP
remarks:        Generated from irt object IRT-CNNIC-CN
remarks:        [email protected] is invalid
abuse-mailbox:  [email protected]
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:         [email protected]
nic-hdl:        ZM678-AP
mnt-by:         MAINT-CNNIC-AP
last-modified:  2021-04-13T23:21:57Z
source:         APNIC

person:         security trouble
e-mail:         [email protected]
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:         [email protected]
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

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	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
121.0.32.0/20	AS9595	NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION	4,096
121.0.48.0/21	AS9595	NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION	2,048
121.0.0.0/21	AS7594	On Q	2,048
121.0.60.0/23	AS154237	Swift Technology Pvt. Ltd.	512
121.0.127.0/24	AS136897	Moack Co., Ltd.	256
121.0.97.0/24	AS138195	Moack Co., Ltd.	256

Hosted domains

There are 32 domain names hosted across 12 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
121.0.20.134	tcpen.cn	5
121.0.20.19	chinakelma.com	3
121.0.26.38	yeshundred.com	2
121.0.21.2	sinowaycn.com	2
121.0.17.65	alibaba-inc.com	2
121.0.21.74	shark.to	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

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

IP Address	ASN	Details
121.0.29.234	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.22ms` from Hangzhou, CN
121.0.31.199	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.34ms` from Qingdao, CN
121.0.21.194	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.94ms` 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
203.157.208.4	AS9649 Information Technology Office	`9.57ms` from Bangkok, TH
62.153.245.132	AS3320 Deutsche Telekom AG	`1.32ms` from Berlin, DE
178.164.214.116	AS20845 DIGI Tavkozlesi es Szolgaltato Kft.	`1.46ms` from Budapest, HU
102.41.94.180	AS8452 TE-AS	`3.74ms` from Cairo, EG
130.185.136.196	AS31027 GlobalConnect A/S	`0.63ms` from Copenhagen, DK
217.239.149.132	AS3320 Deutsche Telekom AG	`0.79ms` from Duesseldorf, DE
86.156.51.4	AS2856 British Telecommunications PLC	`9.44ms` from Erith, GB
112.109.139.52	AS4837 CHINA UNICOM China169 Backbone	`15.58ms` from Fuzhou, CN
39.37.3.228	AS17557 Pakistan Telecommunication Company Limited	`17.96ms` from Karachi, PK
81.36.13.132	AS3352 TELEFONICA DE ESPANA S.A.U.	`6.41ms` from Madrid, ES
167.61.56.148	AS6057 Administracion Nacional de Telecomunicaciones	`1.68ms` from Montevideo, UY
73.121.158.180	AS7922 Comcast Cable Communications, LLC	`16.16ms` from Murfreesboro, US
80.142.171.84	AS3320 Deutsche Telekom AG	`5.43ms` from Nuernberg, DE
112.243.14.228	AS4837 CHINA UNICOM China169 Backbone	`4.99ms` from Qingdao, CN
52.96.119.100	AS8075 Microsoft Corporation	`0.31ms` from Quincy, US
181.175.165.116	AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC)	`0.56ms` from Quito, EC
185.205.68.4	AS57878 Prager Connect GmbH	`0.08ms` from Roubaix, FR
185.97.255.20	AS49542 ArtPlanet LLC	`0.76ms` from Saint Petersburg, RU
133.226.181.52	AS131958 Tama Cable Network Co.,Ltd.	`2.23ms` from Tokyo, JP
80.7.200.20	AS5089 Virgin Media Limited	`9.97ms` from Dublin, IE
88.113.182.84	AS719 Elisa Oyj	`0.80ms` from Helsinki, FI
176.20.142.164	AS48101 Trooli Ltd.	`0.79ms` from London, GB
192.67.81.132	AS195 San Diego Supercomputer Center	`2.63ms` from Los Angeles, US
107.167.41.132	AS36352 HostPapa	`0.29ms` from Los Angeles, US
6.15.198.228	AS668 United States Department of Defense (DoD)	`1.75ms` from Los Angeles, US

Traceroute

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

traceroute -a -n -q1 -f4 -m12 121.0.30.36

traceroute to 121.0.30.36 (121.0.30.36): 12 hops max, 52 byte packets

4 [AS3356] 4.15.125.54 62.756 ms

5 *

6 *

7 *

8 *

9 [AS58461] 220.191.200.238 191.752 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Taos, US

On November 28th 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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