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:  2025-11-18T00:26:20Z
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
221.144.0.0/12	AS10185	Korea Telecom	1,048,576
221.144.0.0/12	AS38405	Korea Telecom	1,048,576
221.144.0.0/12	AS10184	Korea Telecom	1,048,576
221.144.0.0/12	AS38697	Korea Telecom	1,048,576
221.144.0.0/12	AS4766	Korea Telecom	1,048,576
221.144.0.0/12	AS17851	Korea Telecom	1,048,576
221.144.0.0/12	AS45400	Korea Telecom	1,048,576
221.144.0.0/12	AS152214	Korea Telecom	1,048,576
221.144.0.0/12	AS17576	Korea Telecom	1,048,576
221.144.0.0/12	AS45360	Korea Telecom	1,048,576
221.240.0.0/12	AS17506	ARTERIA Networks Corporation	1,048,576
221.144.0.0/12	AS55622	Korea Telecom	1,048,576
221.144.0.0/12	AS9850	Korea Telecom	1,048,576
221.144.0.0/12	AS9526	Korea Telecom	1,048,576
221.144.0.0/12	AS9856	Korea Telecom	1,048,576
221.160.0.0/13	AS9780	Korea Telecom	524,288
221.176.0.0/13	AS9808	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS131325	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56046	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS4134	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS134770	CHINANET jiangsu province network	524,288
221.160.0.0/13	AS4766	Korea Telecom	524,288
221.176.0.0/13	AS56048	China Mobile Communications Corporation	524,288
221.160.0.0/13	AS9631	Korea Telecom	524,288
221.176.0.0/13	AS56042	China Mobile Communications Corporation	524,288
221.160.0.0/13	AS131101	Korea Telecom	524,288
221.224.0.0/13	AS4809	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS24445	China Mobile Communications Corporation	524,288
221.184.0.0/13	AS4713	NTT DOCOMO BUSINESS,Inc.	524,288
221.176.0.0/13	AS56040	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS137697	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS137702	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS138950	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS139080	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS140292	CHINANET jiangsu province network	524,288
221.160.0.0/13	AS18323	Korea Telecom	524,288
221.224.0.0/13	AS23650	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS134756	CHINANET jiangsu province network	524,288
221.160.0.0/13	AS38422	Korea Telecom	524,288
221.176.0.0/13	AS56044	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS146966	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS141425	China Mobile Communications Corporation	524,288
221.216.0.0/13	AS4808	China Unicom Beijing province network	524,288
221.176.0.0/13	AS132510	China Mobile Communications Corporation	524,288
221.232.0.0/14	AS58563	CHINANET Hubei province network	262,144
221.140.0.0/14	AS9318	SK Broadband Co Ltd	262,144
221.232.0.0/14	AS4134	CHINANET Hubei province network	262,144
221.140.0.0/14	AS38695	SK Broadband Co Ltd	262,144
221.140.0.0/14	AS131812	SK Broadband Co Ltd	262,144
221.140.0.0/14	AS16669	SK Broadband Co Ltd	262,144

Hosted domains

There are 259 domain names hosted across 153 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	bymedchina.com	12
221.6.167.55	jsyaohua.com	11
221.6.74.74	ljttech.net	8
221.6.33.162	robank.net	8
221.6.203.10	linyun.biz	7
221.6.167.47	hslzs.com	6
221.6.15.90	wlkjyp.cn	6
221.6.35.116	ldyjz.com	6
221.6.167.59	ylcontrol.com	6
221.6.167.53	renwei.org	6
221.6.167.44	xamsjd.com	6
221.6.167.46	isheyang.com	5
221.6.35.120	studyfun.cn	4
221.6.15.122	yoyolooming.com	4
221.6.167.60	cad189.cn	4
221.6.27.182	ubeesky.net	4
221.6.202.163	nacks.com	3
221.6.146.91	myjst.cn	3
221.6.6.111	htsc.com.cn	3
221.6.114.214	srwlkj.com	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

10,913 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
221.6.40.9	AS4837 CHINA UNICOM China169 Backbone	`3.96ms` from Nanjing, CN
221.6.10.125	AS4837 CHINA UNICOM China169 Backbone	`3.88ms` from Nanjing, CN
221.6.106.194	AS4837 CHINA UNICOM China169 Backbone	`4.02ms` from Nanjing, CN
221.6.66.53	AS4837 CHINA UNICOM China169 Backbone	`3.71ms` from Shanghai, CN
221.6.98.105	AS4837 CHINA UNICOM China169 Backbone	`3.94ms` from Nanjing, CN
221.6.35.119	AS4837 CHINA UNICOM China169 Backbone	`1.49ms` from Nanjing, CN
221.6.18.141	AS4837 CHINA UNICOM China169 Backbone	`4.88ms` from Nanjing, CN
221.6.13.61	AS4837 CHINA UNICOM China169 Backbone	`5.38ms` from Nanjing, CN
221.6.27.165	AS4837 CHINA UNICOM China169 Backbone	`1.90ms` from Nanjing, CN
221.6.78.95	AS4837 CHINA UNICOM China169 Backbone	`5.10ms` from Shanghai, CN
221.6.6.207	AS4837 CHINA UNICOM China169 Backbone	`2.76ms` from Nanjing, CN
221.6.25.145	AS4837 CHINA UNICOM China169 Backbone	`1.34ms` from Nanjing, CN
221.6.21.73	AS4837 CHINA UNICOM China169 Backbone	`4.98ms` from Nanjing, CN
221.6.37.10	AS4837 CHINA UNICOM China169 Backbone	`1.10ms` from Nanjing, CN
221.6.53.169	AS4837 CHINA UNICOM China169 Backbone	`3.52ms` from Nanjing, CN
221.6.79.239	AS4837 CHINA UNICOM China169 Backbone	`5.03ms` from Shanghai, CN
221.6.43.1	AS4837 CHINA UNICOM China169 Backbone	`8.49ms` from Shanghai, CN
221.6.12.221	AS4837 CHINA UNICOM China169 Backbone	`3.72ms` from Nanjing, CN
221.6.91.73	AS4837 CHINA UNICOM China169 Backbone	`4.45ms` from Shanghai, CN
221.6.4.148	AS4837 CHINA UNICOM China169 Backbone	`5.91ms` from Suzhou, CN
221.6.97.237	AS4837 CHINA UNICOM China169 Backbone	`4.01ms` from Nanjing, CN
221.6.22.122	AS4837 CHINA UNICOM China169 Backbone	`4.42ms` from Nanjing, CN
221.6.60.1	AS4837 CHINA UNICOM China169 Backbone	`6.81ms` from Nanjing, CN
221.6.87.189	AS4837 CHINA UNICOM China169 Backbone	`3.83ms` from Shanghai, CN
221.6.80.55	AS4837 CHINA UNICOM China169 Backbone	`4.98ms` from Shanghai, 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
99.122.188.64	AS7018 AT&T Enterprises, LLC	`17.99ms` from Atlanta, US
197.55.7.144	AS8452 TE-AS	`7.64ms` from Cairo, EG
196.117.140.80	AS36925 MEDITELECOM	`2.63ms` from Casablanca, MA
158.252.10.208	AS16509 Amazon.com, Inc.	`0.15ms` from Dubai, AE
34.244.202.128	AS16509 Amazon.com, Inc.	`0.19ms` from Dublin, IE
87.163.225.208	AS3320 Deutsche Telekom AG	`4.21ms` from Nuernberg, DE
133.28.247.0	AS55380 Kanazawa University	`4.71ms` from Osaka, JP
187.121.34.16	AS19182 TELEFÔNICA BRASIL S.A	`3.55ms` from Osasco, BR
73.97.211.192	AS7922 Comcast Cable Communications, LLC	`3.30ms` from Seattle, US
20.214.191.48	AS8075 Microsoft Corporation	`0.29ms` from Seoul, KR
41.226.121.0	AS37705 TOPNET	`5.68ms` from Tunis, TN
161.53.128.16	AS2108 Croatian Academic and Research Network	`0.73ms` from Zagreb, HR
72.131.12.128	AS10796 Charter Communications Inc	`6.87ms` from Chicago, US
159.45.201.48	AS4196 Wells Fargo Bank, N.A.	`7.85ms` from Chicago, US
3.64.7.224	AS16509 Amazon.com, Inc.	`0.13ms` from Frankfurt am Main, DE
212.32.4.0	AS206998 NEW RELIC INTERNATIONAL LIMITED	`0.36ms` from Frankfurt am Main, DE
217.93.223.160	AS3320 Deutsche Telekom AG	`5.08ms` from Frankfurt am Main, DE
80.146.126.176	AS3320 Deutsche Telekom AG	`4.28ms` from Hamburg, DE
180.19.93.96	AS4713 NTT DOCOMO BUSINESS,Inc.	`6.79ms` from Osaka, JP
181.233.164.0	AS263270 CONECTA FIBRA LTDA	`15.31ms` from Osasco, BR
85.167.156.160	AS2119 Telenor Norge AS	`11.03ms` from Oslo, NO
173.34.161.160	AS812 Rogers Communications Canada Inc.	`2.40ms` from Ottawa, CA
91.168.200.64	AS12322 Free SAS	`2.33ms` from Paris, FR
80.116.228.144	AS3269 Telecom Italia S.p.A.	`2.00ms` from Rome, IT
179.130.143.16	AS26599 TELEFÔNICA BRASIL S.A	`2.46ms` from Sao Paulo, BR

Traceroute

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

traceroute -a -n -q1 221.6.66.31

traceroute to 221.6.66.31 (221.6.66.31): 64 hops max, 52 byte packets

1 [AS15169] 66.249.95.132 4.215 ms

2 [AS702] 146.188.112.49 10.118 ms

3 [] 140.222.235.165 11.097 ms

4 [AS702] 139.4.73.6 313.245 ms

5 *

6 *

7 *

8 *

9 [AS4837] 58.240.161.166 325 ms

10 [AS4837] 221.6.66.31 358.75 ms

Measurement taken from

IPinfo ProbeNet in Brussels, BE

On November 14th 2025

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