121.192.0.0/15
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Registry | APNIC |
| ID | SHR-CERNET |
WHOIS Details
inetnum: 121.192.0.0 - 121.192.255.255 netname: SHR-CERNET descr: China Education and Research Network descr: Shanghai Regional Network country: CN admin-c: CER-AP tech-c: CER-AP abuse-c: AC1685-AP status: ALLOCATED PORTABLE remarks: origin AS4538 remarks: confederation mnt-by: APNIC-HM mnt-lower: MAINT-CERNET-AP mnt-routes: MAINT-CERNET-AP mnt-irt: IRT-CERNET-AP last-modified: 2020-09-03T09:16:25Z source: APNIC irt: IRT-CERNET-AP address: Network Research Center, address: Main Bldg, Tsinghua Univ address: Beijing 100084, China phone: +86-10-62784301 fax-no: +86-10-62785933 e-mail: abuse@cernet.edu.cn abuse-mailbox: abuse@cernet.edu.cn admin-c: CER-AP tech-c: CER-AP auth: # Filtered remarks: timezone GMT+8 remarks: http://www.ccert.edu.cn remarks: abuse@cernet.edu.cn was validated on 2025-08-15 mnt-by: MAINT-CERNET-AP last-modified: 2025-11-18T00:26:28Z source: APNIC role: ABUSE CERNETAP country: ZZ address: Network Research Center, address: Main Bldg, Tsinghua Univ address: Beijing 100084, China phone: +86-10-62784301 e-mail: abuse@cernet.edu.cn admin-c: CER-AP tech-c: CER-AP nic-hdl: AC1685-AP remarks: Generated from irt object IRT-CERNET-AP remarks: abuse@cernet.edu.cn was validated on 2025-08-15 abuse-mailbox: abuse@cernet.edu.cn mnt-by: APNIC-ABUSE last-modified: 2025-08-15T09:38:28Z source: APNIC role: CERNET Helpdesk address: CERNET Center address: Beijing 100084, China country: CN phone: +86-10-6278-4049 fax-no: +86-10-6278-5933 e-mail: helpdesk@cernet.edu.cn remarks: abuse@cernet.edu.cn admin-c: XL1-CN tech-c: SZ2-AP nic-hdl: CER-AP mnt-by: MAINT-CERNET-AP last-modified: 2020-09-03T09:14:12Z source: APNIC route: 121.192.0.0/16 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2009-01-05T03:10:57Z source: APNIC
Overlapping Ranges
BGP prefixes that are contained by 121.192.0.0/15
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.192.0.0/16 | AS4538 | China Education and Research Network | 65,536 |
| 121.193.0.0/16 | AS4538 | China Education and Research Network | 65,536 |
Nearby Ranges
BGP prefixes that overlap with 121.0.0.0/8
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.128.0.0/11 | AS17588 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9856 | 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 | AS38122 | 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 |
| 121.160.0.0/11 | AS23582 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS4766 | Korea Telecom | 2,097,152 |
| 121.224.0.0/12 | AS146966 | 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 | AS134756 | 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 | AS137702 | 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 | AS4134 | 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 |
| 121.112.0.0/13 | AS4713 | NTT DOCOMO BUSINESS,Inc. | 524,288 |
| 121.8.0.0/13 | AS136199 | CHINANET Guangdong province network | 524,288 |
| 121.8.0.0/13 | AS135089 | CHINANET Guangdong province network | 524,288 |
| 121.16.0.0/13 | AS4837 | China Unicom Hebei 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 | AS133775 | CHINANET Fujian province network | 262,144 |
| 121.204.0.0/14 | AS133774 | CHINANET Fujian province network | 262,144 |
| 121.196.0.0/14 | AS37963 | Aliyun Computing Co., LTD | 262,144 |
| 121.64.0.0/14 | AS3786 | LG DACOM Corporation | 262,144 |
| 121.40.0.0/14 | AS37963 | Aliyun Computing Co., LTD | 262,144 |
| 121.64.0.0/14 | AS23555 | LG DACOM Corporation | 262,144 |
| 121.248.0.0/14 | AS4538 | China Education and Research Network | 262,144 |
| 121.204.0.0/14 | AS133776 | CHINANET Fujian province network | 262,144 |
| 121.32.0.0/14 | AS4134 | CHINANET Guangdong province network | 262,144 |
| 121.84.0.0/14 | AS17511 | OPTAGE Inc. | 262,144 |
| 121.64.0.0/14 | AS17586 | LG DACOM Corporation | 262,144 |
| 121.60.0.0/14 | AS4134 | CHINANET Hubei province network | 262,144 |
| 121.60.0.0/14 | AS148981 | CHINANET Hubei province network | 262,144 |
| 121.24.0.0/14 | AS4837 | China Unicom Hebei province network | 262,144 |
| 121.204.0.0/14 | AS4134 | CHINANET Fujian province network | 262,144 |
| 121.80.0.0/14 | AS17511 | OPTAGE Inc. | 262,144 |
| 121.64.0.0/14 | AS17598 | LG DACOM Corporation | 262,144 |
| 121.56.0.0/15 | AS4134 | CHINANET neimeng province network | 131,072 |
| 121.2.0.0/15 | AS2527 | Sony Network Communications Inc. | 131,072 |
| 121.44.0.0/15 | AS4739 | iiNet Limited | 131,072 |
| 121.98.0.0/15 | AS9790 | Two Degrees Mobile Limited | 131,072 |
| 121.44.0.0/15 | AS7545 | iiNet Limited | 131,072 |
| 121.124.0.0/15 | AS9318 | SK Broadband Co Ltd | 131,072 |
| 121.4.0.0/15 | AS45090 | Tencent cloud computing (Beijing) Co., Ltd. | 131,072 |
| 121.28.0.0/15 | AS4837 | China Unicom Hebei province network | 131,072 |
| 121.194.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
Hosted domains
There are 14 domain names hosted across 10 IP addresses on this ASN. Checkout our API to access full domain hosting information.
| IP Address | Domain | Domains on this IP |
|---|---|---|
| 121.193.132.24 | gtsi.edu.cn | 1 |
| 121.193.151.136 | chaojixiaoyuan.cn | 1 |
Hosted domains API
Pingable IPs
1,806 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 121.193.138.244 |
4.21ms from Beijing,
CN
|
|
| 121.193.163.254 |
5.92ms from Beijing,
CN
|
|
| 121.192.191.132 |
13.77ms from Guangzhou,
CN
|
|
| 121.192.178.179 |
12.49ms from Guangzhou,
CN
|
|
| 121.193.217.4 |
13.90ms from Beijing,
CN
|
|
| 121.192.177.170 |
12.67ms from Guangzhou,
CN
|
|
| 121.193.140.6 |
4.18ms from Beijing,
CN
|
|
| 121.193.132.42 |
6.93ms from Beijing,
CN
|
|
| 121.193.176.99 |
6.45ms from Beijing,
CN
|
|
| 121.192.190.41 |
12.83ms from Guangzhou,
CN
|
|
| 121.193.175.253 |
4.54ms from Beijing,
CN
|
|
| 121.193.216.56 |
18.10ms from Beijing,
CN
|
|
| 121.193.141.244 |
4.25ms from Beijing,
CN
|
|
| 121.192.131.9 |
14.34ms from Wuhan,
CN
|
|
| 121.193.185.193 |
6.85ms from Beijing,
CN
|
|
| 121.193.167.254 |
7.42ms from Beijing,
CN
|
|
| 121.193.136.225 |
4.24ms from Beijing,
CN
|
|
| 121.193.130.40 |
5.34ms from Beijing,
CN
|
|
| 121.193.174.110 |
4.73ms from Beijing,
CN
|
|
| 121.193.171.254 |
5.01ms from Beijing,
CN
|
|
| 121.193.168.60 |
6.86ms from Beijing,
CN
|
|
| 121.192.179.118 |
13.20ms from Guangzhou,
CN
|
|
| 121.193.173.254 |
6.29ms from Beijing,
CN
|
|
| 121.193.187.254 |
6.47ms from Beijing,
CN
|
|
| 121.193.222.201 |
15.10ms from Tianjin,
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 |
|---|---|---|
| 114.244.10.95 |
3.57ms from Beijing,
CN
|
|
| 178.10.219.191 |
6.78ms from Berlin,
DE
|
|
| 139.155.19.95 |
0.77ms from Chengdu,
CN
|
|
| 139.0.89.255 |
13.14ms from Jakarta,
ID
|
|
| 79.169.157.223 |
8.21ms from Lisbon,
PT
|
|
| 66.142.131.159 |
18.28ms from Los Angeles,
US
|
|
| 201.121.217.239 |
1.48ms from Mexico City,
MX
|
|
| 35.142.185.31 |
10.03ms from Miami,
US
|
|
| 124.146.89.239 |
11.40ms from Osaka,
JP
|
|
| 72.208.214.239 |
1.99ms from Phoenix,
US
|
|
| 146.164.135.63 |
1.40ms from Rio de Janeiro,
BR
|
|
| 116.34.42.31 |
1.96ms from Seoul,
KR
|
|
| 211.179.244.79 |
7.98ms from Seoul,
KR
|
|
| 52.77.252.47 |
0.55ms from Singapore,
SG
|
|
| 154.93.116.255 |
0.70ms from Surabaya,
ID
|
|
| 140.136.128.159 |
4.47ms from Taipei,
TW
|
|
| 41.227.170.15 |
1.52ms from Tunis,
TN
|
|
| 87.128.115.223 |
8.19ms from Berlin,
DE
|
|
| 34.210.188.31 |
0.18ms from Boardman,
US
|
|
| 186.155.139.223 |
0.96ms from Bogota,
CO
|
|
| 69.132.107.15 |
11.87ms from Charlotte,
US
|
|
| 23.60.70.15 |
0.57ms from Dallas,
US
|
|
| 151.54.107.111 |
11.25ms from Frosinone,
IT
|
|
| 84.67.191.111 |
6.90ms from London,
GB
|
|
| 180.138.51.159 |
6.75ms from Nanning,
CN
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Guangzhou, CN
What are IP address ranges?
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