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
121.160.0.0/11 AS23582 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 AS38089 Korea Telecom 2,097,152
121.128.0.0/11 AS18333 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
121.160.0.0/11 AS4766 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 AS140292 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 AS134756 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS137699 CHINANET jiangsu province network 1,048,576
121.208.0.0/12 AS1221 Telstra Limited 1,048,576
121.224.0.0/12 AS137702 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 AS137697 CHINANET jiangsu province network 1,048,576
121.112.0.0/13 AS4713 NTT DOCOMO BUSINESS,Inc. 524,288
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 AS4134 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS140308 CHINANET Guangdong province network 524,288
121.204.0.0/14 AS4134 CHINANET Fujian province network 262,144
121.60.0.0/14 AS4134 CHINANET Hubei province network 262,144
121.24.0.0/14 AS4837 China Unicom Hebei province network 262,144
121.32.0.0/14 AS4134 CHINANET Guangdong province network 262,144
121.64.0.0/14 AS3786 LG DACOM Corporation 262,144
121.60.0.0/14 AS148981 CHINANET Hubei province network 262,144
121.64.0.0/14 AS17598 LG DACOM Corporation 262,144
121.248.0.0/14 AS4538 China Education and Research Network 262,144
121.40.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.80.0.0/14 AS17511 OPTAGE Inc. 262,144
121.196.0.0/14 AS37963 Aliyun Computing Co., LTD 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 AS133774 CHINANET Fujian province network 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 AS17586 LG DACOM Corporation 262,144
121.124.0.0/15 AS9318 SK Broadband Co Ltd 131,072
121.44.0.0/15 AS4739 iiNet Limited 131,072
121.96.0.0/15 AS6648 Bayan Telecommunications Incorporated 131,072
121.2.0.0/15 AS2527 Sony Network Communications Inc. 131,072
121.4.0.0/15 AS132203 Tencent cloud computing (Beijing) Co., Ltd. 131,072
121.44.0.0/15 AS7545 iiNet Limited 131,072
121.202.0.0/15 AS17924 SmarTone Mobile Communications Ltd 131,072
121.28.0.0/15 AS4837 China Unicom Hebei province network 131,072
121.48.0.0/15 AS4538 China Education and Research Network 131,072

Hosted domains

There are 2,044 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 cfalx.com 1235
121.22.232.167 downza.cn 138
121.22.232.169 downza.cn 120
121.22.232.164 weather.com.cn 75
121.17.252.8 18show.cn 26
121.22.232.165 zongxz.com 19
121.17.30.205 raoyang.gov.cn 19
121.17.252.7 yanchengwuyou.com 14
121.22.232.170 lanrentuku.com 11
121.22.243.212 301nnn9.cc 10
121.18.226.82 shetuane.org.cn 9
121.22.243.207 aoroao.cn 9
121.22.243.243 helnrj.com 7
121.22.250.194 qhddj.gov.cn 6
121.22.248.58 wzlyzy.com 5
121.22.232.171 qdmrfb.cn 5
121.17.252.10 kangarootec.cn 5
121.22.243.252 jiesitai.com 5
121.22.5.134 891z.com 5
121.22.5.200 axzps.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

126,770 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.20.166.84 AS4837 CHINA UNICOM China169 Backbone 11.64ms from Tianjin, CN
121.20.103.56 AS4837 CHINA UNICOM China169 Backbone 11.01ms from Tianjin, CN
121.21.70.231 AS4837 CHINA UNICOM China169 Backbone 9.95ms from Tianjin, CN
121.20.157.37 AS4837 CHINA UNICOM China169 Backbone 12.15ms from Tianjin, CN
121.20.176.1 AS4837 CHINA UNICOM China169 Backbone 9.70ms from Tianjin, CN
121.20.108.149 AS4837 CHINA UNICOM China169 Backbone 10.60ms from Tianjin, CN
121.20.114.190 AS4837 CHINA UNICOM China169 Backbone 11.96ms from Tianjin, CN
121.20.253.179 AS4837 CHINA UNICOM China169 Backbone 10.35ms from Tianjin, CN
121.20.204.6 AS4837 CHINA UNICOM China169 Backbone 10.54ms from Tianjin, CN
121.20.186.158 AS4837 CHINA UNICOM China169 Backbone 14.64ms from Beijing, CN
121.21.24.127 AS4837 CHINA UNICOM China169 Backbone 10.22ms from Tianjin, CN
121.20.75.127 AS4837 CHINA UNICOM China169 Backbone 10.10ms from Tianjin, CN
121.20.182.1 AS4837 CHINA UNICOM China169 Backbone 9.78ms from Tianjin, CN
121.21.0.197 AS4837 CHINA UNICOM China169 Backbone 11.43ms from Tianjin, CN
121.20.31.207 AS4837 CHINA UNICOM China169 Backbone 13.38ms from Tianjin, CN
121.21.63.36 AS4837 CHINA UNICOM China169 Backbone 10.57ms from Tianjin, CN
121.20.77.160 AS4837 CHINA UNICOM China169 Backbone 9.77ms from Tianjin, CN
121.20.156.114 AS4837 CHINA UNICOM China169 Backbone 12.62ms from Tianjin, CN
121.21.43.68 AS4837 CHINA UNICOM China169 Backbone 13.59ms from Tianjin, CN
121.20.215.107 AS4837 CHINA UNICOM China169 Backbone 10.10ms from Tianjin, CN
121.20.113.165 AS4837 CHINA UNICOM China169 Backbone 12.59ms from Tianjin, CN
121.20.222.252 AS4837 CHINA UNICOM China169 Backbone 10.40ms from Tianjin, CN
121.20.194.142 AS4837 CHINA UNICOM China169 Backbone 11.04ms from Tianjin, CN
121.20.188.190 AS4837 CHINA UNICOM China169 Backbone 14.55ms from Beijing, CN
121.20.238.252 AS4837 CHINA UNICOM China169 Backbone 13.42ms 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
64.128.122.61 AS3549 Level 3 Parent, LLC 1.82ms from Ashburn, US
77.235.20.13 AS41750 Mega-Line Ltd. 0.22ms from Bishkek, KG
136.159.234.221 AS33091 University of Calgary 0.90ms from Calgary, CA
47.183.115.45 AS5650 Frontier Communications of America, Inc. 7.87ms from Dallas, US
206.123.212.29 AS30688 FastTrack Communications Inc. 6.43ms from Denver, US
51.195.250.189 AS16276 OVH SAS 0.08ms from Erith, GB
178.201.173.253 AS3209 Vodafone GmbH 7.18ms from Frankfurt am Main, DE
183.145.189.93 AS4134 CHINANET-BACKBONE 7.21ms from Hangzhou, CN
87.94.91.253 AS16086 DNA Oyj 6.81ms from Helsinki, FI
101.32.178.189 AS132203 Tencent Building, Kejizhongyi Avenue 0.37ms from Hong Kong, HK
152.101.178.189 AS4058 CITIC Telecom International CPC Limited 1.55ms from Hong Kong, HK
39.60.227.29 AS17557 Pakistan Telecommunication Company Limited 2.60ms from Lahore, PK
92.238.1.29 AS5089 Virgin Media Limited 5.70ms from London, GB
104.160.177.189 AS46844 Sharktech 0.18ms from Los Angeles, US
172.236.172.45 AS63949 Akamai Connected Cloud 0.51ms from Mumbai, IN
125.206.75.109 AS4713 NTT DOCOMO BUSINESS,Inc. 5.20ms from Osaka, JP
46.109.142.13 AS12578 SIA Tet 1.15ms from Riga, LV
135.134.61.125 AS4181 TDS TELECOM 7.12ms from Seattle, US
211.105.69.205 AS4766 Korea Telecom 1.65ms from Seoul, KR
211.33.25.61 AS9318 SK Broadband Co Ltd 5.28ms from Seoul, KR
68.168.238.61 AS13576 SOUTH DAKOTA NETWORK 11.89ms from Sioux Falls, US
103.56.111.45 AS15830 Equinix (EMEA) Acquisition Enterprises B.V. 1.16ms from Tokyo, JP
79.188.198.205 AS5617 Orange Polska Spolka Akcyjna 5.91ms from Warsaw, PL
77.169.119.45 AS1136 KPN B.V. 2.37ms from Amsterdam, NL
89.207.131.13 AS62370 Snel.com B.V. 1.37ms from Amsterdam, NL

Traceroute

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

$
traceroute -a -n -q1 -f5 -m10 121.23.84.120
traceroute to 121.23.84.120 (121.23.84.120): 10 hops max, 52 byte packets
6 *
7 [AS4837] 219.158.13.65 28.419 ms
8 *
9 *
10 *
Measurement taken from IPinfo ProbeNet in Huaihua, CN
On

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