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

Hosted domains

There are 31 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

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

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

IP Address	ASN	Details
121.0.31.201	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.89ms` from Hangzhou, CN
121.0.29.234	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.34ms` from Hangzhou, CN
121.0.21.194	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.98ms` 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
64.23.109.196	AS57795 NG-BLU Networks B.V.	`0.48ms` from Amsterdam, NL
84.162.251.20	AS3320 Deutsche Telekom AG	`5.99ms` from Berlin, DE
216.213.193.20	AS11353 Education Service Center Region XI	`1.69ms` from Dallas, US
87.189.168.148	AS3320 Deutsche Telekom AG	`4.96ms` from Duesseldorf, DE
168.105.131.148	AS6360 University of Hawaii	`2.63ms` from Honolulu, US
209.43.4.36	AS7332 LightBound, LLC	`0.93ms` from Indianapolis, US
174.48.140.100	AS7922 Comcast Cable Communications, LLC	`8.61ms` from Miami, US
69.253.151.84	AS7922 Comcast Cable Communications, LLC	`8.49ms` from Piscataway, US
50.18.221.228	AS16509 Amazon.com, Inc.	`0.17ms` from San Jose, US
218.155.140.244	AS4766 Korea Telecom	`1.92ms` from Seoul, KR
118.220.108.196	AS9318 SK Broadband Co Ltd	`6.79ms` from Seoul, KR
123.15.65.4	AS4837 CHINA UNICOM China169 Backbone	`3.57ms` from Zhengzhou, CN
136.146.186.4	AS14340 Salesforce.com, Inc.	`0.62ms` from Ashburn, US
206.123.194.164	AS395260 The Farmers Telephone Company Inc.	`10.08ms` from Denver, US
113.186.86.132	AS45899 VNPT Corp	`2.29ms` from Hanoi, VN
173.172.182.100	AS11427 Charter Communications Inc	`11.55ms` from Houston, US
218.234.190.100	AS9318 SK Broadband Co Ltd	`1.90ms` from Incheon, KR
34.101.88.244	AS396982 Google LLC	`0.71ms` from Jakarta, ID
38.128.56.100	AS174 Cogent Communications, LLC	`0.75ms` from New York City, US
97.96.140.4	AS33363 Charter Communications, Inc	`4.73ms` from Orlando, US
187.89.20.36	AS26599 TELEFÔNICA BRASIL S.A	`2.35ms` from Osasco, BR
54.226.64.68	AS14618 Amazon.com, Inc.	`0.24ms` from Reston, US
178.71.116.52	AS12389 PJSC Rostelecom	`1.75ms` from Saint Petersburg, RU
169.236.200.52	AS22323 University of California, Merced	`6.46ms` from San Jose, US
49.59.183.196	AS4766 Korea Telecom	`1.83ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f3 -m9 121.0.30.203

traceroute to 121.0.30.203 (121.0.30.203): 9 hops max, 52 byte packets

3 [AS21215] 185.81.60.30 11.055 ms

4 *

5 *

6 [AS3356] 212.133.94.190 24.773 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Novi Travnik, BA

On January 30th 2026

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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