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
221.240.0.0/12	AS17506	ARTERIA Networks Corporation	1,048,576
221.144.0.0/12	AS152214	Korea Telecom	1,048,576
221.144.0.0/12	AS9856	Korea Telecom	1,048,576
221.144.0.0/12	AS4766	Korea Telecom	1,048,576
221.176.0.0/13	AS141425	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS138950	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS137697	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS24445	China Mobile Communications Corporation	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
221.224.0.0/13	AS134770	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS131325	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56040	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS140292	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56048	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS146966	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS4134	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS132510	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56046	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56042	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS139080	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS9808	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS137702	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56044	China Mobile Communications Corporation	524,288
221.160.0.0/13	AS4766	Korea Telecom	524,288
221.216.0.0/13	AS4808	China Unicom Beijing province network	524,288
221.224.0.0/13	AS4809	CHINANET jiangsu province network	524,288
221.184.0.0/13	AS4713	NTT DOCOMO BUSINESS,Inc.	524,288
221.200.0.0/14	AS4837	China Unicom Liaoning Province Network	262,144
221.140.0.0/14	AS9318	SK Broadband Co Ltd	262,144
221.124.0.0/14	AS9304	HGC Global Communications Limited	262,144
221.232.0.0/14	AS58563	CHINANET Hubei province network	262,144
221.232.0.0/14	AS4134	CHINANET Hubei province network	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
221.170.0.0/15	AS2518	BIGLOBE Inc.	131,072
221.130.0.0/15	AS9808	China Mobile Communications Corporation	131,072
221.138.0.0/15	AS9318	SK Broadband Co Ltd	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
221.214.0.0/15	AS4837	China Unicom Shandong province network	131,072
221.206.0.0/16	AS4837	China Unicom Heilongjiang Province Network	65,536
221.168.0.0/16	AS4766	Korea Telecom	65,536
221.169.0.0/16	AS4780	Digital United I	65,536
221.213.0.0/16	AS4837	China Unicom Yunnan province network	65,536
221.10.0.0/16	AS4837	China Unicom SiChuan province network	65,536
221.117.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.115.0.0/16	AS17506	ARTERIA Networks Corporation	65,536

Hosted domains

There are 274 domain names hosted across 154 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
221.6.167.26	hljcfny.com	14
221.6.167.45	jsqhtl.com	12
221.6.167.55	yzzsgy.com	11
221.6.33.162	robanking.net.cn	8
221.6.203.10	shmingjing.com	8
221.6.74.74	ljttech.net	8
221.6.15.90	xn--fiqr1ypmv2wf.cn	6
221.6.167.53	zclw.net	6
221.6.35.116	ldyjz.com	6
221.6.167.47	shenhua-sh.com	6
221.6.167.59	tz-zxhr.com	6
221.6.167.44	leto.cn	5
221.6.167.46	watek.com.cn	5
221.6.35.120	focusteach.com	4
221.6.27.182	ubeesky.net	4
221.6.15.122	luxiaolan.com	4
221.6.13.59	catontechnology.com.cn	3
221.6.25.138	wufan.xyz	3
221.6.202.163	nacks.com.cn	3
221.6.45.147	dejiplaza.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

10,847 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
221.6.23.205	AS4837 CHINA UNICOM China169 Backbone	`4.03ms` from Nanjing, CN
221.6.46.161	AS4837 CHINA UNICOM China169 Backbone	`4.67ms` from Nanjing, CN
221.6.110.209	AS4837 CHINA UNICOM China169 Backbone	`5.07ms` from Shanghai, CN
221.6.122.78	AS4837 CHINA UNICOM China169 Backbone	`5.01ms` from Nanjing, CN
221.6.17.53	AS4837 CHINA UNICOM China169 Backbone	`4.24ms` from Nanjing, CN
221.6.24.129	AS4837 CHINA UNICOM China169 Backbone	`1.10ms` from Nanjing, CN
221.6.59.140	AS4837 CHINA UNICOM China169 Backbone	`2.06ms` from Nanjing, CN
221.6.35.123	AS4837 CHINA UNICOM China169 Backbone	`1.50ms` from Nanjing, CN
221.6.141.9	AS4837 CHINA UNICOM China169 Backbone	`5.64ms` from Nanjing, CN
221.6.103.101	AS4837 CHINA UNICOM China169 Backbone	`3.59ms` from Nanjing, CN
221.6.43.225	AS4837 CHINA UNICOM China169 Backbone	`7.88ms` from Nanjing, CN
221.6.155.158	AS4837 CHINA UNICOM China169 Backbone	`5.13ms` from Nanjing, CN
221.6.4.148	AS4837 CHINA UNICOM China169 Backbone	`5.86ms` from Nanjing, CN
221.6.92.193	AS4837 CHINA UNICOM China169 Backbone	`4.42ms` from Shanghai, CN
221.6.109.141	AS4837 CHINA UNICOM China169 Backbone	`4.56ms` from Shanghai, CN
221.6.53.169	AS4837 CHINA UNICOM China169 Backbone	`3.52ms` from Nanjing, CN
221.6.121.113	AS4837 CHINA UNICOM China169 Backbone	`5.02ms` from Nanjing, CN
221.6.102.137	AS4837 CHINA UNICOM China169 Backbone	`3.98ms` from Nanjing, CN
221.6.131.97	AS4837 CHINA UNICOM China169 Backbone	`3.85ms` from Nanjing, CN
221.6.98.105	AS4837 CHINA UNICOM China169 Backbone	`3.99ms` from Nanjing, CN
221.6.38.173	AS4837 CHINA UNICOM China169 Backbone	`1.06ms` from Nanjing, CN
221.6.68.63	AS4837 CHINA UNICOM China169 Backbone	`3.94ms` from Shanghai, CN
221.6.72.21	AS4837 CHINA UNICOM China169 Backbone	`4.09ms` from Shanghai, CN
221.6.77.57	AS4837 CHINA UNICOM China169 Backbone	`5.05ms` from Shanghai, CN
221.6.66.53	AS4837 CHINA UNICOM China169 Backbone	`3.85ms` 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
155.108.6.64	AS26561 NetRidge LLC	`0.12ms` from Ashburn, US
104.239.173.112	AS27357 Rackspace Hosting	`0.49ms` from Ashburn, US
212.54.192.80	AS1241 Forthnet	`0.59ms` from Athens, GR
79.205.50.224	AS3320 Deutsche Telekom AG	`2.14ms` from Berlin, DE
52.251.12.128	AS8075 Microsoft Corporation	`0.20ms` from Boydton, US
65.41.242.0	AS19901 Brightspeed	`7.07ms` from Dallas, US
81.178.226.208	AS13285 TalkTalk Communications Limited	`6.72ms` from Erith, GB
93.222.108.240	AS3320 Deutsche Telekom AG	`4.43ms` from Frankfurt am Main, DE
223.16.157.32	AS9304 HGC Global Communications Limited	`1.34ms` from Hong Kong, HK
23.11.121.128	AS16625 Akamai Technologies, Inc.	`0.26ms` from Jakarta, ID
41.15.74.128	AS29975 Vodacom	`14.32ms` from Johannesburg, ZA
124.92.171.96	AS4837 CHINA UNICOM China169 Backbone	`9.76ms` from Liaoyang, CN
80.213.162.48	AS2119 Telenor Norge AS	`2.76ms` from Oslo, NO
146.190.49.48	AS14061 DigitalOcean, LLC	`0.30ms` from Santa Clara, US
211.46.120.16	AS4766 Korea Telecom	`2.43ms` from Seoul, KR
125.151.156.96	AS4766 Korea Telecom	`1.84ms` from Seoul, KR
93.115.40.0	AS212929 ATTIFIBER SRL	`4.65ms` from Bucharest, RO
218.6.240.224	AS4134 CHINANET-BACKBONE	`3.03ms` from Chengdu, CN
45.9.13.96	AS44559 IT HOSTLINE LTD	`0.14ms` from Coventry, GB
63.34.254.112	AS16509 Amazon.com, Inc.	`0.18ms` from Dublin, IE
163.0.45.240	AS17816 China Unicom IP network China169 Guangdong province	`5.43ms` from Guangzhou, CN
130.110.238.0	AS31898 Oracle Corporation	`0.13ms` from Jerusalem, IL
4.213.195.16	AS8075 Microsoft Corporation	`0.13ms` from Lohogaon, IN
2.123.166.112	AS5607 Sky UK Limited	`11.36ms` from London, GB
3.210.210.0	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, 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 221.6.67.141

traceroute to 221.6.67.141 (221.6.67.141): 64 hops max, 52 byte packets

4 [] 185.1.193.7 0.571 ms

5 [] 140.222.236.59 27.225 ms

6 *

7 [AS4837] 219.158.4.89 327.555 ms

8 *

9 [AS4837] 219.158.4.173 279.626 ms

10 *

11 *

12 [AS4837] 221.6.67.141 310.056 ms

Measurement taken from

IPinfo ProbeNet in Madrid, ES

On December 14th 2025

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