221.2.0.0/16

AS4837 · CHINA UNICOM China169 Backbone

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Summary

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

WHOIS Details

inetnum:        221.0.0.0 - 221.3.127.255
netname:        UNICOM-SD
descr:          China Unicom Shandong province network
descr:          China Unicom
country:        CN
admin-c:        CH1302-AP
tech-c:         XZ14-AP
abuse-c:        AC1718-AP
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CNCGROUP-SD
mnt-routes:     MAINT-CNCGROUP-RR
mnt-irt:        IRT-CU-CN
last-modified:  2025-01-22T13:20:23Z
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:         XIAOFENG ZHANG
nic-hdl:        XZ14-AP
e-mail:         ip@pub.sd.cninfo.net
address:        Jinan,Shandong P.R China
phone:          +86-531-6666666
fax-no:         +86-531-6666666
country:        CN
mnt-by:         MAINT-ZXF
last-modified:  2008-09-04T07:29:35Z
source:         APNIC

route:          221.2.0.0/16
descr:          CNC Group CHINA169 Shandong Province Network
country:        CN
origin:         AS4837
mnt-by:         MAINT-CNCGROUP-RR
last-modified:  2008-09-04T07:54:44Z
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
221.6.0.0/16	AS140717	China Unicom Jiangsu 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
221.6.0.0/16	AS4837	China Unicom Jiangsu province network	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 309 domain names hosted across 183 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
221.2.200.46	tjhjgg.com	25
221.2.150.158	whet.org.cn	15
221.2.73.233	jinluowinray.cn	15
221.2.196.216	xn--wjqv83ap1e.xn--fiqs8s	9
221.2.150.133	gq12380.gov.cn	8
221.2.171.185	dstls.cn	6
221.2.171.7	shanghanwang.cn	6
221.2.136.247	jieyuhaitian.cn	5
221.2.171.221	jzrd928.icu	4
221.2.196.150	lc96596.com	4
221.2.149.10	onedom.com	4
221.2.79.242	qiulanyuan.com	4
221.2.43.13	zlwxzx.cn	4
221.2.156.42	goldenant-paint.com	4
221.2.73.229	liankai.cn	4
221.2.168.203	anrannami.cn	3
221.2.137.140	whsgjj.cn	3
221.2.43.68	suntissue.org	3
221.2.85.126	anbutuo.cn	2
221.2.216.214	sweepingrobot.cn	2

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

16,722 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
221.2.125.61	AS4837 CHINA UNICOM China169 Backbone	`3.31ms` from Jinan, CN
221.2.15.109	AS4837 CHINA UNICOM China169 Backbone	`8.01ms` from Qingdao, CN
221.2.59.41	AS4837 CHINA UNICOM China169 Backbone	`2.60ms` from Qingdao, CN
221.2.7.166	AS4837 CHINA UNICOM China169 Backbone	`8.09ms` from Qingdao, CN
221.2.30.133	AS4837 CHINA UNICOM China169 Backbone	`5.99ms` from Qingdao, CN
221.2.136.3	AS4837 CHINA UNICOM China169 Backbone	`4.19ms` from Qingdao, CN
221.2.61.105	AS4837 CHINA UNICOM China169 Backbone	`7.84ms` from Qingdao, CN
221.2.149.65	AS4837 CHINA UNICOM China169 Backbone	`3.64ms` from Qingdao, CN
221.2.152.65	AS4837 CHINA UNICOM China169 Backbone	`3.77ms` from Qingdao, CN
221.2.26.157	AS4837 CHINA UNICOM China169 Backbone	`5.91ms` from Qingdao, CN
221.2.89.137	AS4837 CHINA UNICOM China169 Backbone	`5.60ms` from Qingdao, CN
221.2.85.25	AS4837 CHINA UNICOM China169 Backbone	`4.33ms` from Qingdao, CN
221.2.13.56	AS4837 CHINA UNICOM China169 Backbone	`8.56ms` from Qingdao, CN
221.2.81.197	AS4837 CHINA UNICOM China169 Backbone	`4.23ms` from Qingdao, CN
221.2.36.233	AS4837 CHINA UNICOM China169 Backbone	`3.83ms` from Jinan, CN
221.2.42.129	AS4837 CHINA UNICOM China169 Backbone	`4.31ms` from Jinan, CN
221.2.116.81	AS4837 CHINA UNICOM China169 Backbone	`5.17ms` from Jinan, CN
221.2.69.225	AS4837 CHINA UNICOM China169 Backbone	`4.26ms` from Qingdao, CN
221.2.21.201	AS4837 CHINA UNICOM China169 Backbone	`7.77ms` from Qingdao, CN
221.2.62.89	AS4837 CHINA UNICOM China169 Backbone	`6.49ms` from Qingdao, CN
221.2.3.134	AS4837 CHINA UNICOM China169 Backbone	`6.12ms` from Qingdao, CN
221.2.24.205	AS4837 CHINA UNICOM China169 Backbone	`6.00ms` from Qingdao, CN
221.2.60.129	AS4837 CHINA UNICOM China169 Backbone	`4.06ms` from Qingdao, CN
221.2.52.57	AS4837 CHINA UNICOM China169 Backbone	`6.66ms` from Qingdao, CN
221.2.35.201	AS4837 CHINA UNICOM China169 Backbone	`3.87ms` from Jinan, 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
195.133.9.112	AS20326 TeraSwitch Networks Inc.	`0.17ms` from Amsterdam, NL
23.212.141.128	AS7713 PT Telekomunikasi Indonesia	`1.16ms` from Batam, ID
139.211.96.128	AS4837 CHINA UNICOM China169 Backbone	`6.05ms` from Changchun, CN
174.16.162.192	AS209 CenturyLink Communications, LLC	`2.29ms` from Denver, US
20.223.105.96	AS8075 Microsoft Corporation	`0.15ms` from Dublin, IE
200.194.190.0	AS271641 ANDERSON L. DA SILVA MULTIMÍDIA - @NET	`9.02ms` from Fortaleza, BR
159.138.173.224	AS136907 HUAWEI CLOUDS	`0.95ms` from Johannesburg, ZA
92.19.104.144	AS13285 TalkTalk Communications Limited	`3.81ms` from London, GB
94.12.199.144	AS5607 Sky UK Limited	`1.63ms` from London, GB
111.241.158.224	AS3462 Data Communication Business Group	`1.04ms` from Taipei, TW
84.32.9.224	AS16125 UAB Cherry Servers	`2.91ms` from Vilnius, LT
111.173.105.240	AS148981 China Telecom	`6.98ms` from Wuhan, CN
199.255.188.32	AS33445 Yelp! Inc.	`0.39ms` from Ashburn, US
209.99.193.208	AS12282 Selectronics Corp.	`9.53ms` from Boston, US
102.40.71.176	AS8452 TE-AS	`4.22ms` from Cairo, EG
162.209.38.80	AS19994 Rackspace Hosting	`1.32ms` from Chicago, US
99.179.158.48	AS7018 AT&T Enterprises, LLC	`4.14ms` from Houston, US
175.164.20.0	AS4837 CHINA UNICOM China169 Backbone	`8.87ms` from Liaoyang, CN
66.231.159.48	AS10674 Gainesville Regional Utilities	`8.51ms` from Miami, US
60.136.117.16	AS17676 SoftBank Corp.	`10.64ms` from Osaka, JP
180.199.176.224	AS18126 Chubu Telecommunications Company, Inc.	`8.61ms` from Osaka, JP
170.80.102.112	AS264233 WF -TELECOM SERVIÇOS DE TELECOMUNICAÇOES EIRELE ME	`13.09ms` from Osasco, BR
54.196.4.80	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
18.143.55.208	AS16509 Amazon.com, Inc.	`0.13ms` from Singapore, SG
163.27.78.176	AS1659 Taiwan Academic Network (TANet) Information Center	`5.44ms` from Taipei, TW

Traceroute

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

traceroute -a -n -q1 -f2 221.2.229.61

traceroute to 221.2.229.61 (221.2.229.61): 64 hops max, 52 byte packets

2 [AS749] 11.73.8.122 1.38 ms

3 *

4 [] 103.41.143.77 0.772 ms

5 [] 103.41.143.50 0.932 ms

6 *

7 *

8 *

9 [AS4837] 221.2.229.61 4.255 ms

Measurement taken from

IPinfo ProbeNet in Qingdao, CN

On October 30th 2025

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.

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