221.6.0.0/16

AS4837 · CHINA UNICOM China169 Backbone

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Summary

Country	China
Domain	chinaunicom.cn
ASN	AS4837
Registry	APNIC
ID	UNICOM-JS

WHOIS Details

inetnum:        221.6.0.0 - 221.6.255.255
netname:        UNICOM-JS
descr:          China Unicom Jiangsu province network
descr:          China Unicom
country:        CN
admin-c:        CH1302-AP
tech-c:         LL58-AP
abuse-c:        AC1718-AP
status:         ALLOCATED PORTABLE
remarks:        service provider
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CNCGROUP-JS
mnt-routes:     MAINT-CNCGROUP-RR
mnt-irt:        IRT-CU-CN
last-modified:  2025-01-22T13:18:19Z
source:         APNIC

irt:            IRT-CU-CN
address:        No.21,Financial Street
address:        Beijing,100033
address:        P.R.China
e-mail:         zhaoyz3@chinaunicom.cn
abuse-mailbox:  zhaoyz3@chinaunicom.cn
admin-c:        CH1302-AP
tech-c:         CH1302-AP
auth:           # Filtered
remarks:        zhaoyz3@chinaunicom.cn was validated on 2025-10-17
mnt-by:         MAINT-CNCGROUP
last-modified:  2025-10-17T02:26:26Z
source:         APNIC

role:           ABUSE CUCN
country:        ZZ
address:        No.21,Financial Street
address:        Beijing,100033
address:        P.R.China
phone:          +000000000
e-mail:         zhaoyz3@chinaunicom.cn
admin-c:        CH1302-AP
tech-c:         CH1302-AP
nic-hdl:        AC1718-AP
remarks:        Generated from irt object IRT-CU-CN
remarks:        zhaoyz3@chinaunicom.cn was validated on 2025-10-17
abuse-mailbox:  zhaoyz3@chinaunicom.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-17T02:26:56Z
source:         APNIC

person:         ChinaUnicom Hostmaster
nic-hdl:        CH1302-AP
e-mail:         hqs-ipabuse@chinaunicom.cn
address:        No.21,Jin-Rong Street
address:        Beijing,100033
address:        P.R.China
phone:          +86-10-66259764
fax-no:         +86-10-66259764
country:        CN
mnt-by:         MAINT-CNCGROUP
last-modified:  2017-08-17T06:13:16Z
source:         APNIC

person:         Lan Li
nic-hdl:        LL58-AP
e-mail:         js-cu-ipmanage@chinaunicom.cn
address:        No. 65 Beijing West Road,Nanjing,China
phone:          +86257900060
fax-no:         +86252900280
country:        CN
mnt-by:         MAINT-NEW
last-modified:  2013-08-15T02:13:11Z
source:         APNIC

route:          221.6.0.0/16
descr:          CNC Group CHINA169 Jiangsu Province Network
country:        CN
origin:         AS4837
mnt-by:         MAINT-CNCGROUP-RR
last-modified:  2008-09-04T07:54:45Z
source:         APNIC

route:          221.6.0.0/16
descr:          CNC Group CHINA169 Jiangsu Province Network
country:        CN
origin:         AS9929
mnt-by:         MAINT-CNCGROUP-RR
last-modified:  2008-09-04T07:54:45Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 221.0.0.0/8

Range	ASN	Company	Num of IPs
221.240.0.0/12	AS17506	ARTERIA Networks Corporation	1,048,576
221.176.0.0/13	AS9808	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56040	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS146966	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56046	China Mobile Communications Corporation	524,288
221.216.0.0/13	AS4808	China Unicom Beijing province network	524,288
221.224.0.0/13	AS134756	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS138950	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS134770	CHINANET jiangsu province network	524,288
221.184.0.0/13	AS4713	NTT DOCOMO BUSINESS,Inc.	524,288
221.176.0.0/13	AS56044	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS4809	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS139080	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS132510	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS24445	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS140292	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS23650	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56048	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS4134	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS137702	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS131325	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56042	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS141425	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS137697	CHINANET jiangsu province network	524,288
221.232.0.0/14	AS4134	CHINANET Hubei province network	262,144
221.200.0.0/14	AS4837	China Unicom Liaoning Province Network	262,144
221.232.0.0/14	AS58563	CHINANET Hubei province network	262,144
221.124.0.0/14	AS9304	HGC Global Communications Limited	262,144
221.130.0.0/15	AS56041	China Mobile Communications Corporation	131,072
221.130.0.0/15	AS56042	China Mobile Communications Corporation	131,072
221.214.0.0/15	AS4837	China Unicom Shandong province network	131,072
221.130.0.0/15	AS9808	China Mobile Communications Corporation	131,072
221.204.0.0/15	AS4837	China Unicom Shanxi Province Network	131,072
221.8.0.0/15	AS4837	China Unicom JILIN province network	131,072
221.170.0.0/15	AS2518	BIGLOBE Inc.	131,072
221.213.0.0/16	AS4837	China Unicom Yunnan province network	65,536
221.129.0.0/16	AS23841	TIANJIN BROADCAST & TV NETWORK CO. LTD	65,536
221.137.0.0/16	AS9812	Oriental Cable Network Co., Ltd.	65,536
221.10.0.0/16	AS4837	China Unicom SiChuan province network	65,536
221.169.0.0/16	AS4780	Digital United I	65,536
221.119.0.0/16	AS2516	KDDI CORPORATION	65,536
221.206.0.0/16	AS4837	China Unicom Heilongjiang Province Network	65,536
221.117.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.116.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.115.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.114.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.112.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.113.128.0/17	AS4713	NTT DOCOMO BUSINESS,Inc.	32,768

Hosted domains

There are 271 domain names hosted across 161 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
221.6.167.45	jsqhtl.com	12
221.6.167.55	yzzsgy.com	10
221.6.203.10	lpxdc.cn	9
221.6.33.162	robank.net	8
221.6.74.74	ljttech.net	8
221.6.167.44	leto.cn	7
221.6.167.53	zclw.net	6
221.6.167.47	shenhua-sh.com	6
221.6.35.116	ldyjz.com	6
221.6.167.46	tzbrjxzz.com	6
221.6.15.90	yuqing.net.cn	6
221.6.167.59	yzysgy.com	5
221.6.15.122	luxiaolan.com	4
221.6.27.182	zhuoyutech.com	4
221.6.167.60	cad189.cn	4
221.6.35.120	focusteach.com	4
221.6.45.147	dejiplaza.com.cn	3
221.6.6.111	htsc.com.cn	3
221.6.202.163	nacks.cn	3
221.6.13.59	catontechnology.com.cn	3

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

10,722 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
221.6.10.125	AS4837 CHINA UNICOM China169 Backbone	`3.87ms` from Nanjing, CN
221.6.39.89	AS4837 CHINA UNICOM China169 Backbone	`1.09ms` from Nanjing, CN
221.6.31.113	AS4837 CHINA UNICOM China169 Backbone	`1.40ms` from Nanjing, CN
221.6.5.149	AS4837 CHINA UNICOM China169 Backbone	`1.79ms` from Nanjing, CN
221.6.8.161	AS4837 CHINA UNICOM China169 Backbone	`4.91ms` from Nanjing, CN
221.6.42.1	AS4837 CHINA UNICOM China169 Backbone	`10.53ms` from Shanghai, CN
221.6.53.169	AS4837 CHINA UNICOM China169 Backbone	`2.55ms` from Nanjing, CN
221.6.38.117	AS4837 CHINA UNICOM China169 Backbone	`1.34ms` from Nanjing, CN
221.6.35.129	AS4837 CHINA UNICOM China169 Backbone	`1.40ms` from Nanjing, CN
221.6.16.226	AS4837 CHINA UNICOM China169 Backbone	`5.42ms` from Nanjing, CN
221.6.4.148	AS4837 CHINA UNICOM China169 Backbone	`5.83ms` from Suzhou, CN
221.6.54.49	AS4837 CHINA UNICOM China169 Backbone	`1.84ms` from Nanjing, CN
221.6.6.207	AS4837 CHINA UNICOM China169 Backbone	`2.71ms` from Nanjing, CN
221.6.46.37	AS4837 CHINA UNICOM China169 Backbone	`4.42ms` from Nanjing, CN
221.6.26.33	AS4837 CHINA UNICOM China169 Backbone	`1.24ms` from Nanjing, CN
221.6.17.53	AS4837 CHINA UNICOM China169 Backbone	`4.24ms` from Nanjing, CN
221.6.0.78	AS4837 CHINA UNICOM China169 Backbone	`3.71ms` from Nanjing, CN
221.6.52.195	AS4837 CHINA UNICOM China169 Backbone	`2.21ms` from Nanjing, CN
221.6.3.217	AS4837 CHINA UNICOM China169 Backbone	`5.36ms` from Nanjing, CN
221.6.15.125	AS4837 CHINA UNICOM China169 Backbone	`4.26ms` from Nanjing, CN
221.6.14.81	AS4837 CHINA UNICOM China169 Backbone	`4.04ms` from Nanjing, CN
221.6.30.189	AS4837 CHINA UNICOM China169 Backbone	`1.22ms` from Nanjing, CN
221.6.9.209	AS4837 CHINA UNICOM China169 Backbone	`3.95ms` from Nanjing, CN
221.6.12.210	AS4837 CHINA UNICOM China169 Backbone	`4.05ms` from Nanjing, CN
221.6.1.249	AS4837 CHINA UNICOM China169 Backbone	`3.47ms` from Nanjing, 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
195.240.86.192	AS1136 KPN B.V.	`0.85ms` from Amsterdam, NL
212.54.192.80	AS1241 Forthnet	`0.57ms` from Athens, GR
49.44.42.48	AS55836 Reliance Jio Infocomm Limited	`13.72ms` from Bengaluru, IN
52.88.60.208	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, US
190.247.154.112	AS7303 Telecom Argentina S.A.	`2.88ms` from Buenos Aires, AR
45.227.221.0	AS267052 Alt Telecom	`16.29ms` from Fortaleza, BR
217.87.197.32	AS3320 Deutsche Telekom AG	`4.68ms` from Hamburg, DE
185.202.174.192	AS62164 Heymman Servers Corporation	`0.24ms` from Kansas City, US
157.245.34.32	AS14061 DigitalOcean, LLC	`0.27ms` from London, GB
176.84.128.160	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.24ms` from Madrid, ES
74.102.75.112	AS701 Verizon Business	`2.87ms` from New York City, US
97.145.59.192	AS6167 Verizon Business	`9.27ms` from Philadelphia, US
123.98.187.0	AS9943 KangNam CableTV	`0.86ms` from Seoul, KR
220.134.72.192	AS3462 Data Communication Business Group	`1.70ms` from Taichung, TW
110.67.12.224	AS2527 Sony Network Communications Inc.	`2.31ms` from Tokyo, JP
20.84.33.176	AS8075 Microsoft Corporation	`0.42ms` from Ashburn, US
98.229.207.64	AS7922 Comcast Cable Communications, LLC	`9.33ms` from Boston, US
172.245.158.48	AS36352 HostPapa	`0.14ms` from Buffalo, US
51.11.113.128	AS8075 Microsoft Corporation	`0.18ms` from Cardiff, GB
71.70.227.0	AS11426 Charter Communications Inc	`13.37ms` from Charlotte, US
72.49.106.16	AS6181 Cincinnati Bell Telephone Company LLC	`1.74ms` from Cincinnati, US
182.68.71.32	AS24560 Bharti Airtel Ltd., Telemedia Services	`6.50ms` from Delhi, IN
36.137.116.64	AS9808 China Mobile Communications Group Co., Ltd.	`0.46ms` from Hangzhou, CN
1.6.224.192	AS9583 Sify Limited	`0.85ms` from Kolkata, IN
94.196.213.80	AS206067 Hutchison 3G UK Limited	`10.40ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f2 221.6.52.223

traceroute to 221.6.52.223 (221.6.52.223): 64 hops max, 52 byte packets

2 [AS749] 11.29.247.196 0.258 ms

3 *

4 *

5 *

6 [AS4837] 153.3.229.229 1.171 ms

7 *

8 *

9 [AS4837] 221.6.52.223 2.271 ms

Measurement taken from

IPinfo ProbeNet in Nanjing, CN

On October 25th 2025

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