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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CH1302-AP
tech-c:         CH1302-AP
auth:           # Filtered
remarks:        [email protected] 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:         [email protected]
admin-c:        CH1302-AP
tech-c:         CH1302-AP
nic-hdl:        AC1718-AP
remarks:        Generated from irt object IRT-CU-CN
remarks:        [email protected] was validated on 2025-10-17
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-17T02:26:56Z
source:         APNIC

person:         ChinaUnicom Hostmaster
nic-hdl:        CH1302-AP
e-mail:         [email protected]
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:         [email protected]
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	AS9856	Korea Telecom	1,048,576
221.144.0.0/12	AS4766	Korea Telecom	1,048,576
221.240.0.0/12	AS17506	ARTERIA Networks Corporation	1,048,576
221.144.0.0/12	AS152214	Korea Telecom	1,048,576
221.224.0.0/13	AS137697	CHINANET jiangsu province network	524,288
221.184.0.0/13	AS4713	NTT DOCOMO BUSINESS,Inc.	524,288
221.224.0.0/13	AS23650	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS132510	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS138950	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS134756	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS4809	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS131325	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS141425	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS146966	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS9808	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS140292	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS139080	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS134770	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS137702	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS4134	CHINANET jiangsu province network	524,288
221.160.0.0/13	AS4766	Korea Telecom	524,288
221.176.0.0/13	AS56044	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56046	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56048	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS24445	China Mobile Communications Corporation	524,288
221.216.0.0/13	AS4808	China Unicom Beijing province network	524,288
221.176.0.0/13	AS56040	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56042	China Mobile Communications Corporation	524,288
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
221.200.0.0/14	AS4837	China Unicom Liaoning Province Network	262,144
221.232.0.0/14	AS4134	CHINANET Hubei province network	262,144
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
221.170.0.0/15	AS2518	BIGLOBE Inc.	131,072
221.8.0.0/15	AS4837	China Unicom JILIN province network	131,072
221.204.0.0/15	AS4837	China Unicom Shanxi Province Network	131,072
221.130.0.0/15	AS56042	China Mobile Communications Corporation	131,072
221.130.0.0/15	AS56041	China Mobile Communications Corporation	131,072
221.138.0.0/15	AS9318	SK Broadband Co Ltd	131,072
221.119.0.0/16	AS2516	KDDI CORPORATION	65,536
221.169.0.0/16	AS4780	Digital United I	65,536
221.168.0.0/16	AS4766	Korea Telecom	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
221.114.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.112.0.0/16	AS17506	ARTERIA Networks Corporation	65,536

Hosted domains

There are 262 domain names hosted across 155 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	yidianlin.net	12
221.6.167.55	cyfhx.com	11
221.6.33.162	robanking.net	8
221.6.74.74	ljttech.cn	8
221.6.203.10	haoyidg.cn	7
221.6.167.59	tz-zxhr.com	6
221.6.35.116	ldyjz.com	6
221.6.167.44	zoendental.com	6
221.6.167.47	hainantianze.com	6
221.6.167.53	precese.cn	6
221.6.15.90	wlkjyp.cn	6
221.6.167.46	watek.com.cn	5
221.6.27.182	ubeesky.com	4
221.6.35.120	studyfun.net	4
221.6.15.122	luxiaolan.com	4
221.6.167.60	zhongxuan-group.cn	4
221.6.25.138	multiveros.com	3
221.6.114.214	51wlcg.com	3
221.6.13.59	catontechnology.com.cn	3
221.6.146.91	deepes.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

10,879 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
221.6.49.227	AS4837 CHINA UNICOM China169 Backbone	`3.27ms` from Nanjing, CN
221.6.15.65	AS4837 CHINA UNICOM China169 Backbone	`4.21ms` from Nanjing, CN
221.6.6.135	AS4837 CHINA UNICOM China169 Backbone	`2.64ms` from Nanjing, CN
221.6.50.6	AS4837 CHINA UNICOM China169 Backbone	`2.71ms` from Nanjing, CN
221.6.125.19	AS4837 CHINA UNICOM China169 Backbone	`5.03ms` from Nanjing, CN
221.6.35.193	AS4837 CHINA UNICOM China169 Backbone	`1.34ms` from Nanjing, CN
221.6.54.53	AS4837 CHINA UNICOM China169 Backbone	`1.97ms` from Nanjing, CN
221.6.64.191	AS4837 CHINA UNICOM China169 Backbone	`3.89ms` from Shanghai, CN
221.6.82.181	AS4837 CHINA UNICOM China169 Backbone	`5.06ms` from Shanghai, CN
221.6.78.27	AS4837 CHINA UNICOM China169 Backbone	`5.10ms` from Shanghai, CN
221.6.57.201	AS4837 CHINA UNICOM China169 Backbone	`2.56ms` from Nanjing, CN
221.6.53.169	AS4837 CHINA UNICOM China169 Backbone	`3.61ms` from Nanjing, CN
221.6.32.41	AS4837 CHINA UNICOM China169 Backbone	`1.96ms` from Nanjing, CN
221.6.179.17	AS4837 CHINA UNICOM China169 Backbone	`3.40ms` from Nanjing, CN
221.6.182.249	AS4837 CHINA UNICOM China169 Backbone	`6.51ms` from Nanjing, CN
221.6.122.89	AS4837 CHINA UNICOM China169 Backbone	`4.00ms` from Nanjing, CN
221.6.140.161	AS4837 CHINA UNICOM China169 Backbone	`6.23ms` from Shanghai, CN
221.6.12.221	AS4837 CHINA UNICOM China169 Backbone	`3.78ms` from Nanjing, CN
221.6.19.227	AS4837 CHINA UNICOM China169 Backbone	`4.20ms` from Nanjing, CN
221.6.152.150	AS4837 CHINA UNICOM China169 Backbone	`3.73ms` from Nanjing, CN
221.6.187.52	AS4837 CHINA UNICOM China169 Backbone	`7.21ms` from Nanjing, CN
221.6.37.40	AS4837 CHINA UNICOM China169 Backbone	`1.34ms` from Nanjing, CN
221.6.104.17	AS4837 CHINA UNICOM China169 Backbone	`4.29ms` from Nanjing, CN
221.6.17.73	AS4837 CHINA UNICOM China169 Backbone	`4.13ms` from Nanjing, CN
221.6.186.249	AS4837 CHINA UNICOM China169 Backbone	`7.51ms` 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
87.214.177.160	AS13127 Odido Netherlands B.V.	`6.87ms` from Amsterdam, NL
80.88.91.224	AS31034 Aruba S.p.A.	`0.38ms` from Arezzo, IT
123.56.118.176	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.89ms` from Beijing, CN
52.32.21.208	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
37.221.107.128	AS34244 Teleservice Bredband Skane AB	`1.53ms` from Copenhagen, DK
52.50.140.96	AS16509 Amazon.com, Inc.	`0.14ms` from Dublin, IE
20.113.70.160	AS8075 Microsoft Corporation	`0.28ms` from Frankfurt am Main, DE
73.3.252.80	AS7922 Comcast Cable Communications, LLC	`7.34ms` from Greenwood Village, US
87.94.116.96	AS16086 DNA Oyj	`0.58ms` from Helsinki, FI
74.8.233.48	AS7029 Windstream Communications LLC	`2.50ms` from Miami, US
186.53.87.112	AS6057 Administracion Nacional de Telecomunicaciones	`1.74ms` from Montevideo, UY
124.154.236.224	AS2514 NTT PC Communications, Inc.	`2.29ms` from Osaka, JP
157.13.129.64	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`19.36ms` from Osaka, JP
124.133.183.48	AS4837 CHINA UNICOM China169 Backbone	`6.21ms` from Qingdao, CN
95.52.213.48	AS12389 PJSC Rostelecom	`8.59ms` from Saint Petersburg, RU
187.225.206.240	AS8151 UNINET	`7.46ms` from Santiago de Queretaro, MX
202.166.44.96	AS9506 Singtel Fibre Broadband	`1.32ms` from Singapore, SG
198.148.194.208	AS55547 WOODSNET-PH	`0.38ms` from Taipei, TW
134.185.144.0	AS54253 Oracle Corporation	`3.92ms` from Tokyo, JP
115.131.50.112	AS7545 TPG Telecom Limited	`10.96ms` from Adelaide, AU
18.0.70.160	AS3 Massachusetts Institute of Technology	`1.75ms` from Boston, US
93.222.108.240	AS3320 Deutsche Telekom AG	`4.37ms` from Frankfurt am Main, DE
86.16.34.112	AS5089 Virgin Media Limited	`10.02ms` from London, GB
75.16.32.0	AS7018 AT&T Enterprises, LLC	`2.42ms` from Los Angeles, US
73.139.123.208	AS7922 Comcast Cable Communications, LLC	`5.20ms` from Miami, US

Traceroute

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

traceroute -a -n -q1 -f3 221.6.81.170

traceroute to 221.6.81.170 (221.6.81.170): 64 hops max, 52 byte packets

3 [AS3356] 4.69.209.165 146.417 ms

4 [AS3356] 4.53.209.22 422.28 ms

5 *

6 [AS4837] 219.158.8.173 372.605 ms

7 *

8 *

9 *

10 [AS4837] 221.6.81.170 408.122 ms

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On November 28th 2025

What are IP address ranges?

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