1. All IP Ranges
  2. 121.0.0.0/8
  3. AS4837  | 121.16.0.0/13

121.16.0.0/13

AS4837  ·  CHINA UNICOM China169 Backbone

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Summary

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

WHOIS Details

inetnum:        121.16.0.0 - 121.23.255.255
netname:        UNICOM-HE
descr:          China Unicom Hebei province network
descr:          China Unicom
country:        CN
admin-c:        CH1302-AP
tech-c:         KL984-AP
abuse-c:        AC1718-AP
status:         ALLOCATED PORTABLE
remarks:        service provider
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CNCGROUP-HE
mnt-routes:     MAINT-CNCGROUP-RR
mnt-irt:        IRT-CU-CN
last-modified:  2023-10-21T03:33:57Z
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:         Kong Lingfei
nic-hdl:        KL984-AP
e-mail:         [email protected]
address:        45, Guang An Street, Shi Jiazhuang City, HeBei Province,050011,CN
phone:          +86-311-86681601
fax-no:         +86-311-86689210
country:        cn
mnt-by:         MAINT-CNCGROUP-HE
last-modified:  2009-02-06T02:31:32Z
source:         APNIC

route:          121.16.0.0/13
descr:          CNC Group CHINA169 Hebei Province Network
country:        CN
origin:         AS4837
mnt-by:         MAINT-CNCGROUP-RR
last-modified:  2008-09-04T07:54:47Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 121.0.0.0/8

Range ASN Company Num of IPs
121.128.0.0/11 AS18333 Korea Telecom 2,097,152
121.128.0.0/11 AS17588 Korea Telecom 2,097,152
121.128.0.0/11 AS38122 Korea Telecom 2,097,152
121.160.0.0/11 AS23582 Korea Telecom 2,097,152
121.160.0.0/11 AS38089 Korea Telecom 2,097,152
121.160.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS9856 Korea Telecom 2,097,152
121.128.0.0/11 AS9647 Korea Telecom 2,097,152
121.128.0.0/11 AS4766 Korea Telecom 2,097,152
121.224.0.0/12 AS4134 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS137697 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS140292 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS134756 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS134770 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS140293 CHINANET jiangsu province network 1,048,576
121.208.0.0/12 AS1221 Telstra Limited 1,048,576
121.224.0.0/12 AS137699 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS146966 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS137702 CHINANET jiangsu province network 1,048,576
121.8.0.0/13 AS135089 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS136199 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS140308 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS4134 CHINANET Guangdong province network 524,288
121.112.0.0/13 AS4713 NTT DOCOMO BUSINESS,Inc. 524,288
121.64.0.0/14 AS17586 LG DACOM Corporation 262,144
121.64.0.0/14 AS23555 LG DACOM Corporation 262,144
121.84.0.0/14 AS17511 OPTAGE Inc. 262,144
121.64.0.0/14 AS17598 LG DACOM Corporation 262,144
121.60.0.0/14 AS4134 CHINANET Hubei province network 262,144
121.64.0.0/14 AS3786 LG DACOM Corporation 262,144
121.32.0.0/14 AS4134 CHINANET Guangdong province network 262,144
121.204.0.0/14 AS133776 CHINANET Fujian province network 262,144
121.204.0.0/14 AS133775 CHINANET Fujian province network 262,144
121.204.0.0/14 AS4134 CHINANET Fujian province network 262,144
121.40.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.60.0.0/14 AS148981 CHINANET Hubei province network 262,144
121.80.0.0/14 AS17511 OPTAGE Inc. 262,144
121.60.0.0/14 AS137266 CHINANET Hubei province network 262,144
121.196.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.24.0.0/14 AS4837 China Unicom Hebei province network 262,144
121.204.0.0/14 AS133774 CHINANET Fujian province network 262,144
121.248.0.0/14 AS4538 China Education and Research Network 262,144
121.98.0.0/15 AS9790 Two Degrees Mobile Limited 131,072
121.76.0.0/15 AS9812 Oriental Cable Network Co., Ltd. 131,072
121.48.0.0/15 AS4538 China Education and Research Network 131,072
121.4.0.0/15 AS45090 Tencent cloud computing (Beijing) Co., Ltd. 131,072
121.2.0.0/15 AS2527 Sony Network Communications Inc. 131,072
121.194.0.0/15 AS4538 China Education and Research Network 131,072
121.44.0.0/15 AS4739 iiNet Limited 131,072

Hosted domains

There are 2,099 domain names hosted across 403 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
121.17.126.22 kuanchenglandun.com 1232
121.22.232.170 weather.com.cn 233
121.22.232.168 iduba.com 144
121.17.252.8 adayouxi.com 30
121.17.30.205 gucheng.gov.cn 19
121.22.232.167 steampp.net 18
121.22.5.131 njtjyq.com 13
121.17.252.7 jiankewang.com 13
121.22.232.164 fuhaikonggu.com 11
121.22.243.212 77gmbet.com 10
121.18.226.82 shetuane.com 9
121.22.232.171 nndj.gov.cn 9
121.22.243.207 ansyid.com 9
121.22.243.243 helnrj.com 7
121.18.238.12 255388.cc 7
121.22.250.194 qhddx.gov.cn 6
121.22.232.165 shujianai.net 5
121.22.232.163 hyc8.cn 5
121.22.243.252 andmall.cn 5
121.22.5.134 fldw.cn 5

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

123,085 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.18.207.49 AS4837 CHINA UNICOM China169 Backbone 8.65ms from Beijing, CN
121.18.152.177 AS4837 CHINA UNICOM China169 Backbone 8.71ms from Beijing, CN
121.18.174.153 AS4837 CHINA UNICOM China169 Backbone 9.66ms from Beijing, CN
121.19.207.231 AS4837 CHINA UNICOM China169 Backbone 9.92ms from Beijing, CN
121.20.25.221 AS4837 CHINA UNICOM China169 Backbone 13.03ms from Beijing, CN
121.20.7.43 AS4837 CHINA UNICOM China169 Backbone 14.32ms from Beijing, CN
121.20.17.169 AS4837 CHINA UNICOM China169 Backbone 13.42ms from Beijing, CN
121.20.3.246 AS4837 CHINA UNICOM China169 Backbone 14.82ms from Beijing, CN
121.18.252.16 AS4837 CHINA UNICOM China169 Backbone 8.93ms from Beijing, CN
121.18.219.193 AS4837 CHINA UNICOM China169 Backbone 9.01ms from Beijing, CN
121.18.157.26 AS4837 CHINA UNICOM China169 Backbone 11.51ms from Zhangjiakou, CN
121.19.200.1 AS4837 CHINA UNICOM China169 Backbone 9.62ms from Beijing, CN
121.18.198.9 AS4837 CHINA UNICOM China169 Backbone 9.29ms from Beijing, CN
121.19.212.53 AS4837 CHINA UNICOM China169 Backbone 9.34ms from Beijing, CN
121.19.213.152 AS4837 CHINA UNICOM China169 Backbone 9.20ms from Beijing, CN
121.19.121.230 AS4837 CHINA UNICOM China169 Backbone 10.40ms from Beijing, CN
121.19.107.125 AS4837 CHINA UNICOM China169 Backbone 10.96ms from Beijing, CN
121.19.83.159 AS4837 CHINA UNICOM China169 Backbone 8.99ms from Beijing, CN
121.18.153.17 AS4837 CHINA UNICOM China169 Backbone 8.63ms from Beijing, CN
121.18.159.85 AS4837 CHINA UNICOM China169 Backbone 9.58ms from Beijing, CN
121.19.124.161 AS4837 CHINA UNICOM China169 Backbone 10.06ms from Beijing, CN
121.19.55.126 AS4837 CHINA UNICOM China169 Backbone 13.64ms from Qingdao, CN
121.19.205.150 AS4837 CHINA UNICOM China169 Backbone 12.28ms from Beijing, CN
121.18.178.17 AS4837 CHINA UNICOM China169 Backbone 9.09ms from Beijing, CN
121.20.29.70 AS4837 CHINA UNICOM China169 Backbone 13.31ms from Beijing, 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
62.149.232.77 AS31034 Aruba S.p.A. 0.29ms from Arezzo, IT
34.86.118.77 AS396982 Google LLC 0.13ms from Ashburn, US
56.136.57.141 AS8987 Amazon Data Services Ireland Ltd 0.30ms from Boardman, US
70.123.61.61 AS11427 Charter Communications Inc 11.65ms from Dallas, US
52.48.159.61 AS16509 Amazon.com, Inc. 0.24ms from Dublin, IE
93.211.166.45 AS3320 Deutsche Telekom AG 2.01ms from Duesseldorf, DE
31.6.57.221 AS395374 Cyber Sainik 0.41ms from Frankfurt am Main, DE
218.250.213.109 AS4760 HKT Limited 0.96ms from Hong Kong, HK
83.56.49.237 AS3352 TELEFONICA DE ESPANA S.A.U. 1.62ms from Madrid, ES
204.211.84.61 AS6559 State of NC - State Telecommunications Services 15.01ms from Manassas, US
2.113.45.205 AS3269 Telecom Italia S.p.A. 0.99ms from Milan, IT
89.208.187.141 AS12695 LLC Digital Network 1.16ms from Moscow, RU
177.16.140.77 AS18881 TELEFÔNICA BRASIL S.A 1.94ms from Osasco, BR
54.91.149.141 AS14618 Amazon.com, Inc. 0.25ms from Reston, US
125.168.115.237 AS9443 Vocus Retail 1.54ms from Sydney, AU
210.189.39.77 AS2516 KDDI CORPORATION 0.85ms from Tokyo, JP
104.101.203.157 AS16625 Akamai Technologies, Inc. 5.63ms from Ashburn, US
62.74.252.157 AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA 1.72ms from Athens, GR
87.125.85.173 AS12430 VODAFONE ESPANA S.A.U. 3.85ms from Barcelona, ES
152.110.101.77 AS20011 Dimension Data 1.56ms from Cape Town, ZA
86.145.111.13 AS2856 British Telecommunications PLC 7.11ms from Erith, GB
62.8.39.61 AS15933 ith Kommunikationstechnik GmbH 6.56ms from Frankfurt am Main, DE
80.141.171.93 AS3320 Deutsche Telekom AG 6.20ms from Frankfurt am Main, DE
1.64.117.253 AS4760 HKT Limited 1.21ms from Hong Kong, HK
221.126.232.61 AS9304 HGC Global Communications Limited 1.30ms from Hong Kong, HK

Traceroute

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

$
traceroute -a -n -q1 -f2 121.16.212.1
traceroute to 121.16.212.1 (121.16.212.1): 64 hops max, 52 byte packets
3 *
4 [AS4837] 122.141.227.33 10.583 ms
5 *
7 *
8 *
9 *
10 [AS4837] 121.16.212.1 17.531 ms
Measurement taken from IPinfo ProbeNet in Changchun, CN
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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