221.0.0.0/15

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 216 domain names hosted across 168 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
221.0.79.67 xn--vhquv66k5m1a.com 24
221.0.181.242 sinlein.cn 6
221.1.96.206 cljdzx.net 3
221.1.106.252 tg-star.com 3
221.0.200.69 shandongmap.com 3
221.0.92.146 sdpu.cn 3
221.0.79.140 ytcutv.com 2
221.1.80.87 zhongmiaotong.net 2
221.0.81.165 ytsmartbi.com.cn 2
221.0.186.2 ckjorc.org 2
221.0.183.3 zgqdrc.cn 2
221.0.79.139 ytcutv.com.cn 2
221.0.227.39 124590.xyz 2
221.1.217.6 jvcheng.cn 2
221.1.204.106 hzcjgj.com 2
221.1.97.130 ishengtai.cn 2
221.0.183.4 wsjxjy.com 2
221.1.80.243 xn--xhqy04atm2a6oz.cn 2
221.0.228.238 waskola.cn 1
221.1.66.46 wohuacn.net 1

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

Pingable IPs

67,391 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
221.1.247.248 AS4837 CHINA UNICOM China169 Backbone 7.16ms from Qingdao, CN
221.1.220.21 AS4837 CHINA UNICOM China169 Backbone 8.33ms from Qingdao, CN
221.1.244.116 AS4837 CHINA UNICOM China169 Backbone 7.03ms from Qingdao, CN
221.1.241.254 AS4837 CHINA UNICOM China169 Backbone 8.04ms from Qingdao, CN
221.1.252.81 AS4837 CHINA UNICOM China169 Backbone 5.65ms from Jinan, CN
221.1.219.253 AS4837 CHINA UNICOM China169 Backbone 5.07ms from Jinan, CN
221.1.184.133 AS4837 CHINA UNICOM China169 Backbone 6.91ms from Jinan, CN
221.1.218.9 AS4837 CHINA UNICOM China169 Backbone 5.78ms from Jinan, CN
221.1.196.53 AS4837 CHINA UNICOM China169 Backbone 5.14ms from Jinan, CN
221.1.182.105 AS4837 CHINA UNICOM China169 Backbone 4.76ms from Qingdao, CN
221.1.246.238 AS4837 CHINA UNICOM China169 Backbone 6.55ms from Qingdao, CN
221.1.185.157 AS4837 CHINA UNICOM China169 Backbone 6.40ms from Qingdao, CN
221.1.206.85 AS4837 CHINA UNICOM China169 Backbone 8.44ms from Qingdao, CN
221.1.223.109 AS4837 CHINA UNICOM China169 Backbone 8.38ms from Qingdao, CN
221.1.231.141 AS4837 CHINA UNICOM China169 Backbone 6.82ms from Qingdao, CN
221.1.224.166 AS4837 CHINA UNICOM China169 Backbone 6.81ms from Qingdao, CN
221.1.242.254 AS4837 CHINA UNICOM China169 Backbone 7.94ms from Qingdao, CN
221.1.215.1 AS4837 CHINA UNICOM China169 Backbone 5.67ms from Jinan, CN
221.1.236.97 AS4837 CHINA UNICOM China169 Backbone 6.60ms from Qingdao, CN
221.1.213.189 AS4837 CHINA UNICOM China169 Backbone 5.81ms from Jinan, CN
221.1.204.133 AS4837 CHINA UNICOM China169 Backbone 8.48ms from Qingdao, CN
221.1.227.222 AS4837 CHINA UNICOM China169 Backbone 6.68ms from Qingdao, CN
221.1.199.177 AS4837 CHINA UNICOM China169 Backbone 4.96ms from Jinan, CN
221.1.237.3 AS4837 CHINA UNICOM China169 Backbone 7.35ms from Qingdao, CN
221.1.193.101 AS4837 CHINA UNICOM China169 Backbone 4.86ms 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
150.136.193.47 AS31898 Oracle Corporation 0.34ms from Ashburn, US
52.146.83.15 AS8075 Microsoft Corporation 0.38ms from Ashburn, US
97.180.71.143 AS6167 Verizon Business 10.27ms from Atlanta, US
93.208.164.191 AS3320 Deutsche Telekom AG 4.93ms from Duesseldorf, DE
103.20.3.15 AS55453 SKYTELECOM 6.30ms from Islamabad, PK
143.159.166.143 AS6871 Plusnet 5.63ms from London, GB
201.102.37.191 AS8151 UNINET 1.24ms from Mexico City, MX
82.105.84.255 AS3269 Telecom Italia S.p.A. 4.36ms from Milan, IT
87.28.241.255 AS3269 Telecom Italia S.p.A. 2.48ms from Milan, IT
37.23.236.15 AS12389 PJSC Rostelecom 5.63ms from Novosibirsk, RU
54.81.104.47 AS14618 Amazon.com, Inc. 0.23ms from Reston, US
82.107.197.255 AS3269 Telecom Italia S.p.A. 7.63ms from Rome, IT
118.43.137.143 AS4766 Korea Telecom 5.17ms from Seoul, KR
121.20.237.223 AS4837 CHINA UNICOM China169 Backbone 13.13ms from Tianjin, CN
60.138.30.143 AS17676 SoftBank Corp. 3.25ms from Tokyo, JP
95.214.212.255 AS43019 Farah Net S.a.r.l. 4.70ms from Beirut, LB
181.136.139.175 AS13489 UNE EPM TELECOMUNICACIONES S.A. 7.60ms from Bogota, CO
52.172.223.239 AS8075 Microsoft Corporation 0.15ms from Lohogaon, IN
217.154.63.207 AS8560 IONOS SE 4.11ms from London, GB
96.47.124.79 AS397122 Chequamegon Communications Cooperative, Inc. 6.76ms from Minneapolis, US
73.228.217.223 AS7922 Comcast Cable Communications, LLC 4.87ms from Minneapolis, US
13.218.172.63 AS14618 Amazon.com, Inc. 0.44ms from Reston, US
68.92.135.191 AS7018 AT&T Enterprises, LLC 4.43ms from San Antonio, US
118.51.198.239 AS4766 Korea Telecom 2.33ms from Seoul, KR
126.89.50.31 AS17676 SoftBank Corp. 2.88ms from Tokyo, JP

Traceroute

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

$
traceroute -a -n -q1 -f3 221.0.52.145
traceroute to 221.0.52.145 (221.0.52.145): 64 hops max, 52 byte packets
3 [AS3257] 46.33.67.197 0.548 ms
5 *
6 [AS4837] 219.158.7.189 206.42 ms
7 *
8 *
9 *
10 *
11 [AS4837] 123.233.122.14 199.809 ms
12 [AS4837] 221.0.52.145 203.113 ms
Measurement taken from IPinfo ProbeNet in Barcelona, ES
On

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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